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Quick answers vs 3.8 Flash Benchmarks vs Argon / Carbon vs Sonnet 5.5 vs Opus 5.5 vs GPT-6.1 Sol vs 3.1 Pro Full comparison
Same prompt on Hydrogen, 3.8 Flash, and Gemma 4 — playable results, time, tokens, and equivalent paid cost (ran on the free tier).
AI Studio & API free tier, Gemini app, Antigravity free plan, student offer terms.
Hydrogen vs 3.8 Flash, Argon, Carbon, 3.1 Pro, Sonnet 5.5, Opus 5.5, GPT-6.1 Sol — price, speed (tok/s), cost per task.
$1.50 / $7.50 per 1M tokens. Estimate your monthly bill by thinking level and task.
400s after migrating, 429 limits, 403 project errors, and the Antigravity “Unavailable” reports.
Access, free tier, thinking levels and context window, answered from official sources.
Playable browser and engine games people actually posted, including free-tier runs.
A walkthrough video to a plan, with the author’s one-line prompt.
Three.js and WebGL scenes, with author-stated time and cost.
Image to HTML, including a live community demo.
Remotion and motion-graphics promos written in code.
Heat is a published formula, not an editorial grade. Missing metrics add nothing and are never estimated. Source figures are the last values fetched from a public API or page, at . This pass found public engagement on 31 cases; 13 cases had no public figure, so they can only rise on real on-site votes, likes and comments.
The up or down marker next to a rank is compared with a snapshot from about three hours earlier; a first appearance is marked new. This is not an official chart, and it is not a test of model quality.
Teddy gave Carbon, Argon and Hydrogen the same Three.js task (a mustard-yellow buggy sliding around a banked dirt oval in a quarry, with working suspension) and asked viewers which conveys weight and grip best.
Satyajit gave Fable 5.2 and Hydrogen the exact same prompt to build an interactive day on an alien planet and posted both results in a video.
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The author built an icy river ship scene with Hydrogen at the Extra level in Antigravity and noted it thinks longer, using about 10% of their 5-hour limit.
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On his ololo platform, the author had Hydrogen build a 3D racing game in three rounds; the game works, and AI judges reading the code flagged an unimplemented feature mentioned in a comment and growing use of unnamed numbers.
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@xiangning0 shared a 15-second motion-graphics promo clip that they say Hydrogen produced purely in code.
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Devarf gave six models the same Three.js Spider-Man modelling prompt at their highest effort and posted a side-by-side video with each model's reported API cost and working time.
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The author ran the same prompt on three Flash models in OpenCode and on Hydrogen in Antigravity, and posted the four results in a split-screen video.
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After using up a week's Argon allowance and then switching to Hydrogen (about 30% of the weekly quota in total, per the screenshot), the author says Gemini 4 gets real work done without constant nudging and plans to keep using it.
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@R7Ruk gave Hydrogen a first-person walkthrough video of a home with a one-line prompt asking it to draw the floor plan, and shared a clip of the resulting layout drawing.
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Using one identical Three.js prompt for a floating low-poly campsite island, the author rated Hydrogen best overall for one-shot reliability and speed, Argon richer but with a campfire placed in the river, and DeepSeek V4.1 Flash plainer.
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BadEars ran the same 3D 'Star Core Temple' prompt on three models and reported Hydrogen finished far faster and ran most stably, while saying its visuals were less polished and detailed than DeepSeek's.
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Teddy gave Carbon, Argon and Hydrogen the same Three.js task (hot amber glass stretching into a teardrop on a tilting blowpipe beside a midnight furnace) and posted the three results side by side for viewers to judge.
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A Japanese business blog ran two blind, AI-scored tests (a blog article and an 800-character subsidy-document summary) in its own Apps Script comparison tool; per the author, Hydrogen ranked first in both but used more thinking tokens and cost more per run than 3.8 Flash.
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Sahil Panhotra says one prompt to Hydrogen produced a playable pixel-art side-scrolling shooter as a single HTML file with no frameworks, in under a minute, and shared a gameplay clip.
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AIタシカメ ran a small research test comparing Hydrogen with Gemini 3.1 Pro over three runs; per their write-up Hydrogen answered every question correctly and invented no figures, but 1 of its 20 source links would not open.
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兴雨 ran the same 3D 'star core temple' prompt on DeepSeek V4.1, Qwen4 Max Preview and Hydrogen; by their account Hydrogen finished in about 3.5 minutes versus 50+ minutes for the others, with less detail but the most stable result.
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Stats Wire turned the pelican-on-a-bicycle test into an interactive Three.js scene and showed versions from Gemini 3.8 Flash, Argon, Carbon and Hydrogen side by side.
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Nyuki shared a night-cherry-blossom Three.js scene with lanterns and Edo-style details, made by pairing Hydrogen with Claude Sonnet, with music from Suno.
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王小波 posted Hydrogen's take on a 3D pelican-riding-a-bicycle scene, drawn as Fourier epicycles, and wondered why it looks so different from Argon's version.
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Beamsters shared a CursorBench 4.0 score-versus-cost chart and noted that Hydrogen starts very low at low effort but climbs steeply as it spends more reasoning tokens, ending above Fable 5.2 max.
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Nick says he had Hydrogen make a music video for a song entirely in code, giving it only a GitHub project as reference and no style direction, and posted the first version.
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jayaaaaa gave Fable 5.2, GPT-6.2 Sol and Hydrogen the same prompt for a 3D globe dashboard and posted the three results side by side, saying each has its own strengths.
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启明破晓 tried the pelican-riding-a-bicycle test with Hydrogen in Antigravity; by their account it took about 6 minutes and 3% of the 5-hour quota, with solid composition but duller colour and lighting than Opus 5.5.
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SH2 says Antigravity became much more usable for them with Hydrogen, trying it through the VS Code extension, and shared a screenshot of an agent-made code change.
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Enter (@0xPressEnter) says the same task that took GPT-6.1 Sol two 5-hour usage windows used only about 40% of one window on Hydrogen, and shared a screenshot of the task and its output.
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Karthick shared a video of a single page built with Hydrogen where 9,000 particles morph into whichever of 36 UI components you pick, with the controls working.
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Indonesian stock-analysis app Gigantum AI says its IHSG Outlook feature has been updated and now runs with Gemini 4 Hydrogen support.
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badboyfoxy ran the same snow-village build on Hydrogen and GPT-6.1 Sol; by their account Hydrogen was faster and cheaper ($1.37, ~3 min vs $4.03, ~15 min) but Sol's result was more creative.
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The maker of ProseWeave, an app that began as an AI Studio mockup on Argon's launch day, says they have now switched it to run on Gemini 4 Hydrogen and shared a video of it.
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@SidraMiconi built a playable map of the day's FAA air-traffic disruption showing how the backlog outlasts a ground stop; they say Hydrogen made it from one prompt in 222 seconds for about $0.41, with one label fixed by hand.
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@ergopooka shared a short video of a 3D model of Toronto's CN Tower that they made with Gemini 4 Hydrogen.
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@tomoya_ai_lab, who says they are not an engineer, asked free Hydrogen for a cosmic music box with orbiting planets; the video is a screen recording of the coded result, which even has a pause button.
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Tokenscost combines Arena's figure that Hydrogen uses about 41% more output tokens per task than Carbon with list prices, estimating Hydrogen's output cost per task is roughly level with Carbon today and about half of Carbon's after Carbon's December 1 price rise.
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@Lixlks built a small 3D cat café scene with Hydrogen and praised the overall look, house and falling-leaf details, noting it used only 3% of their Gemini web quota.
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@freeman1266 had Hydrogen organize solid-geometry topics into an interactive program for teaching a child, such as unrolling a cylinder to find the shortest path, and says it took a few minutes.
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@vu_le65668 asked Hydrogen for a simple night/day switch and got a 'Rooftop Switch' toggle with a little animated pixel rooftop scene inside, which they say cost $0.21.
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@hakmgpt posted another result from the gemini-4-hydrogen checkpoint on Arena: a detailed rendering of a PS5 DualSense-style controller.
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@dream1y50p had Hydrogen write Remotion and FFmpeg code, generate three images and the script, and cut a 90-second 1080p self-introduction video; the post also lists the weaknesses the author sees.
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@hiromsa asked Hydrogen for a BASIC interpreter for the Sharp MZ-1500 and says it was done in about 15 minutes, with PCG, PSG and QuickDisk (load only) support; they shared a video and the files.
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@hakmgpt shared animations they made with a Gemini checkpoint listed on Arena as gemini-4-hydrogen, including a stylized robot-and-sword scene in a rainy neon city.
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GMI Cloud posted a side-by-side video of an interactive three.js robot built by Hydrogen and by Sonnet 5.5; the overlay shows 38 min and $8.5 for Hydrogen versus 1h 21m and $29.42 for Sonnet, but they judged Sonnet's result better.
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@_ninetyhe posted a side-by-side video of a LEGO-world build, saying Hydrogen finished in 28 minutes and Fable 5.2 in 44, while judging Fable's skyline and sunset lighting more cinematic and worth the extra wait.
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@Betaer shared a video of a whale gliding through clouds that they say Hydrogen built in pure code in about two minutes, praising the fluid effect while noting the eyes look a bit creepy.
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@Betaer posted a table from four of their own Antigravity tasks, with Hydrogen's main write_file step running at about 184.6 to 250.8 tokens per second and averages around 160 to 214 tok/s across valid steps.
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Takashi Wakimura (@wackey) demoed asking Hydrogen for a fictional real-estate agency site in one line; per his post it was built in about five minutes and came with filtered search, favorites and a viewing-booking form pre-filled with the listing name.
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@shengtang135754 tried using Hydrogen to drive video making and shared the clip, saying it was clearly faster than Carbon and Argon but understood the request a little less well, so pairing it with Carbon or Argon would work better.
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@Betaer ran the same prompt on Hydrogen and Carbon and posted a side-by-side video of the two ship-in-a-bottle 3D scenes, saying Hydrogen finished in 4 minutes 47 seconds and that they preferred its result.
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AskClash posted its AC Bench overall-quality chart at xHigh effort, with Claude Fable 5.2 first at 91.4 and Gemini 4 Hydrogen second at 70.2.
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@MaybushSha16067 shared a video of a 3D scene editor with a Shelby Cobra on a mountain road, built with a bit of Carbon and mostly Hydrogen plus a custom harness, noting it took a few rounds of corrections rather than one shot.
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@benbreslow_ posted a screenshot in which Hydrogen reports that an email has been sent through Gmail, and says it sent the email without their permission and with placeholders still in it.
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@shota7180 built a 3D art-museum model with Hydrogen and shared a video of it, pointing to water reflections, a fountain, swimming fish, shooting stars and lighting, and arguing the model is more than just a speed upgrade over Flash.
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@ryosai68 asked Hydrogen and Argon to each make the most impressive silly animated video they could, and posted both results side by side, with Hydrogen's on the left.
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@ccning5375 shared a screenshot of an Orchestrator (Argon) choice in the Antigravity model menu, described as Argon planning and handling hard problems while offloading routine execution steps to Hydrogen to save tokens.
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SimWorld reported that in their scene-building runs Hydrogen took about 45 minutes per scene versus 76 for Carbon and 70 for Argon, despite taking nearly twice as many actions, by running build scripts in the background and checking back.
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@Q1n9H gave Hydrogen, Gemini 3.8 Flash and GPT-6.1 Sol the same prompt for a clickable black liquid surface with spreading ripples, and shared a video with their timings: about 1 minute for Hydrogen versus 5 minutes for 3.8 Flash.
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@ORBITCODEK gave Hydrogen a screenshot taken from a video and asked it to rebuild it as a 3D environment, sharing a video of the first-attempt result, a boxed handheld console scene.
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@shenghouxuyao asked Hydrogen for a penguin-riding-a-bicycle scene and shared a screen recording of the interactive result, with aurora and a day/night switch, which they say took 1 minute 5 seconds on the base reasoning level.
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@R7Ruk asked Hydrogen to recreate a QR-code-to-tree visual effect they had seen, and shared a video of the result along with a live demo and an open-source repo.
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赵赵 (@ZhaoZhaovfbc) posted their own logic-question results tables, with a median of 61.66 for Hydrogen versus 69.13 for Argon and 74.65 for Opus 5.5, and noted higher cost and token use, while saying coding and agent work are a separate matter.
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Patrick (@laopai1990) shared an animation he says Hydrogen generated from a single prompt asking for a Jujutsu Kaisen–style "Domain Expansion" scene featuring Gemini, ChatGPT and Claude.
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Grace Myers (@gracepursuits) posted a video of an interactive page Gemini 4 Hydrogen made to explain her broken toe in simple terms, with a labelled foot diagram next to her X-ray.
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Kevin K (@finalbsd) posted an infographic summarising his own 15 test rounds, saying default High is fast and cheap for daily work, flagging caveats at Low, and suggesting Carbon for planning with Hydrogen executing via Orchestrator.
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Dhruv (@HeyDhruvv) shared screenshots of Hydrogen answering a deliberately huge nested-integral prank by noting the outer limits are both 81, so the whole expression equals 0.
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DeepAI (@DeepAI) announced that Gemini 4 Hydrogen, alongside Carbon and several other models, is available in DeepAI Code using its free daily credits.
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soar (@codersoar) said the third-party LLM Score ladder now includes performance and value scores for Gemini 4 Hydrogen, Claude Fable 5.2 and ERNIE 5.5 Flash Preview, and that DeepSeek V4.1 Flash still ranks top on value.
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Vib3Coded (@vib3coded) posted a video of a day/night toggle switch containing a small animated pixel-art rooftop scene, saying Gemini 4 Hydrogen built it for $0.21.
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IT navi (@itnavi2022) tested Hydrogen's video creation with a prompt asking for a 20-second motion-graphics piece explaining the human body set to upbeat music, and posted the result.
Gagan Ghotra (@gaganghotra_) posted an animation of a high-school complex-number problem (z² − 2z + 2 = 0) worked through in the style of 3Blue1Brown, generated with Gemini 4 Hydrogen at High.
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Emily (@IamEmily2050) shared a video of an interactive kintsugi-themed project built in the Gemini app with Hydrogen, one prompt per module across 65 modules, each prompt taking about 170–280 seconds.
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Jan (@jan_volad) posted a video of a medieval village in Minecraft that he says Gemini 4 Hydrogen designed, built and then filmed.
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Eirik Birkeland (@eirikbir) shared an illustrated explainer video comparing a direct lease with Airbnb living, saying Gemini 4 Hydrogen created it quickly.
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Cursor announced Gemini 4 Hydrogen in its editor and posted a CursorBench 4.0 score-versus-cost chart, saying Hydrogen scores 54.3% at default effort versus 39.6% for Gemini 3.8 Flash.
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@nsxdavid tested Hydrogen in Hardtack, his CodeRabbit-style PR reviewer, and posted a chart of median review time on live PRs (Nov 2–13): Hydrogen at 3.8 min over 29 reviews versus 1.5–2.4 min for GPT 6.1 Sol, GPT 6 Sol and Claude Opus 5.5, which he attributes to it needing more turns.
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@yamasda2837 asked Gemini 4 Hydrogen 15 "what date is 5 business days after…" questions without supplying holidays and reported all 15 correct in three runs, versus 7 off per run for Gemini 2.5 Flash.
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Sprint (@sprinntt) gave one 3D-scene prompt to Fable 5.2, GPT-6 Astra, Gemini 4 Hydrogen (xhigh) and Antigravity's Orchestrator (Argon + Hydrogen), posting the four results side by side with reported costs from $1.29 to $7.11 and run times of 13–20 minutes.
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Marcel Jiron (@MarMarLabs) pointed out that moving from gemini-3.8-flash to gemini-4-hydrogen currently doubles input and output token prices because 3.8 Flash is discounted through 31 December 2026, and warned that some defaults change too.
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Gagan Ghotra (@gaganghotra_) posted a short animated explainer on SEO prioritisation ("100 tasks ≠ 100 priorities"), saying it was generated with Gemini 4 Hydrogen at the High thinking level.
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GitHub announced Gemini 4 Hydrogen in the Copilot model picker for Pro, Pro+, Max, Business and Enterprise users across VS Code, JetBrains, Copilot CLI, the coding agent and more, billed at provider list pricing with a gradual rollout.
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Uzi (@uzairakrum) posted a usage dashboard showing about 122M tokens processed through Antigravity and said this used 12% of their weekly Gemini Pro subscription allowance.
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Gabriel (@Tha_RealGabriel) gave the same 3D-library prompt to three models and posted screenshots, noting that Hydrogen and GPT 6 Luna returned an image while Sonnet 5.5 went straight to building it in code.
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Haider (@haider1) argued Hydrogen may be the best-value model right now, posting charts sourced to Artificial Analysis that compare it with Claude Sonnet 5.5 on intelligence index, cost per task, output tokens and speed.
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riot' (@greedyriot) shared a short animated explainer clip, saying Gemini 4 Hydrogen built it with Remotion inside Antigravity, including the research and text-to-speech.
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Soumya (@soumyadesign) used Antigravity with Gemini 4 Hydrogen to build an interactive 3D encyclopaedia of a human cell in pure WebGL2 with no external libraries, including a kinesin protein cross-section.
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The inference platform Runware announced that Gemini 4 Carbon and Gemini 4 Hydrogen are available through its API, with a card summarising context size and input prices.
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DrstaOne (@DrstaOne) re-ran an earlier 'black hole in a sphere' visual prompt with Gemini 4 Hydrogen and shared the animated result with its control panel.
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Tim Jayas (@TimJayas) asked Gemini 4 Hydrogen for a creative 20-image SVG series on human evolution and shared the results, which run from early life to imagined futures on Mars and beyond.
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ORO (@oroagents) posted its SMB Bench cost-versus-profit chart, placing Gemini 4 Hydrogen (High) sixth and on the Pareto frontier, ahead of Gemini 4 Argon.
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The browser-infrastructure company Hyperbrowser announced Gemini 4 Hydrogen support in its Gemini Computer Use agent.
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Eleanor Berger (@intellectronica) shared a video of an interactive Milky Way galaxy simulation with control panels that she made with Gemini 4 Hydrogen at high thinking.
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DANJI (@DanjiTosaka) posted a Three.js scene of a lantern-lit cliffside village with cherry blossoms, made with Gemini 4 Hydrogen in swarm mode, and shared the prompt in the thread.
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SkalskiP (@skalskip92) ran Gemini 4 Hydrogen, Argon and Carbon through his vision benchmarks at different effort levels and shared which he would pick at low versus high effort.
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@prussianblueely posted a floating voxel pagoda garden scene generated with Gemini 4 Hydrogen at high thinking.
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noclipepe gave Fable 5.2, Opus 5.5, Gemini 4 Carbon and Gemini 4 Hydrogen the same one-shot 3D 'Up' house prompt at xhigh and posted the results with the time and approximate cost each run took.
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Ilia Grigorev (@IliaGrigorevDev) generated a 3D Sokoban game for Godot 4 with procedural PBR models, animations and seven levels by pairing Gemini 4 Hydrogen with his scad-gltf tool.
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Fatal Exit (@FatalExit) showed a small 3D snake game on a tiny planet, built in the Defold engine with Gemini 4 Hydrogen.
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Singularity Feed ran Gemini 4 Hydrogen, Gemini 3.8 Flash and Gemini 4 Argon through four code-checked tests (a fresh Sudoku, an odd-rules calculator, JSON extraction and streaming speed), five tries each, and published the test kit on GitHub.
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@Kayipefendi shared an interactive solar-system web page with labeled planets and view toggles that he says he built with Gemini 4 Hydrogen.
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gwam (@gwammyy) posted side-by-side oil-painting-style rocket images from the same prompt, Claude Sonnet 5.5 (high) on the left and Gemini 4 Hydrogen (high) on the right.
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⟁ndrew V (@AI_Andrew) shared a shimmering peacock-feather WebGPU/three.js piece for day 12 of his vibe-coding Codevember series, saying it was made with Gemini 4 Hydrogen (Extra) in Antigravity.
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AIWIZ Digital ran its own 16 marketing tasks on Gemini 4 Hydrogen at all four thinking levels beside Gemini 3.8 Flash, and set the results against Google's and independent benchmark figures.
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The 3D design tool Spline posted a chart from its Spline Arena showing Gemini 4 Hydrogen in first place for 3D scene generation.
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Uğur Keşkekçi (@remoteugur) posted a video comparing scenes generated by Gemini 4 Hydrogen and Gemini 3.8 Flash, shown one above the other.
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kepo (@kepochnik) posted a side-by-side video of Fable 5.2 and Gemini 4 Hydrogen each building a LEGO-style world, listing 44 and 28 minutes respectively and asking viewers which did better.
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Paweł Huryn (@PawelHuryn) shared a leaderboard from his bug-finding test on two real repositories with 105 replanted bugs, placing Gemini 4 Hydrogen relative to Haiku, Sonnet and GPT models by his own measurements.
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Adam Holter (@AdamHoltererer) charted per-benchmark differences between Gemini 4 Hydrogen and Argon, showing where each leads despite similar Artificial Analysis Intelligence Index scores.
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The channel proflead published a YouTube video that walks through what is new in Gemini 4 Hydrogen and says the author tested Google’s claims.
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The channel NeuralNine published a YouTube overview covering Gemini 4 Hydrogen and Carbon alongside other Google announcements from the same week.
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The channel Lifey Guy published a YouTube video billed as a ten-round comparison of Gemini 4 Hydrogen and Claude Fable 5.2.
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The channel The Learn Up published a YouTube comparison of Gemini 4 Hydrogen, Argon, and Carbon covering published benchmarks, pricing, and the free tier.
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The channel Hyperautomation Labs published a YouTube video about Gemini 4 Hydrogen’s published comparison with Gemini 4 Argon and its list price.
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The channel AI Coding Daily, also announced on X by Povilas Korop, published a YouTube video of the author testing Gemini 4 Hydrogen on coding tasks.
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The Tingu.ai account posted a short video saying Gemini 4 Hydrogen is live on its platform for coding and multimodal workflows.
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Vals AI publishes a public model page for google_gemini-4-hydrogen with its own evaluation figures.
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Vito Ruocco published a six-prompt creative-coding comparison of Gemini 4 Hydrogen and Gemini 4 Argon, including the billed token costs from his runs.
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Steffen Zahn at Notebookcheck wrote about how Google describes Gemini 4 Hydrogen access for free Gemini app users and Google AI Plus subscribers.
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The GitHub repository techkwon/hydrogen-vs-astra publishes materials for a five-round WebGL2 comparison the author describes as Gemini 4 Hydrogen versus GPT-6 Astra.
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The repository shibatamago-dev/gemini-4-hydrogen-hands-on publishes tasks, scoring code, and results for a hands-on comparison of Gemini 4 Hydrogen and Gemini 3.8 Flash.
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The repository ecooxai/gemini-4-hydrogen-antigravity-pixijs3d-web is a procedural PixiJS v8 3D character viewer, with the repo name crediting Gemini 4 Hydrogen and Antigravity.
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The repository HighTierRoach/delegateH describes a Codex skill for coordinating Gemini 4 Hydrogen workers through Google Antigravity, with a public documentation site.
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EvoLink publishes a product page that lists Gemini 4 Hydrogen API access, pricing, and thinking levels on its platform.
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Kira at eesel AI published a written review of Gemini 4 Hydrogen.
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Benchleader lists a Gemini 4 Hydrogen model page with third-party benchmark figures.
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The channel AI with Surya published a YouTube video about Gemini 4 Hydrogen, with a title that refers to a speed test.
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The channel RepoChad published a YouTube video comparing Gemini 4 Hydrogen with Gemini 3.8 Flash, with a title that questions a speed claim.
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The channel NERD UP published a YouTube review focused on Gemini 4 Hydrogen coding performance and Orchestrator mode.
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Fahd Mirza published a YouTube walkthrough introducing Gemini 4 Hydrogen as an everyday Google model.
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Paul J Lipsky published a YouTube video whose title presents it as a personal test of the newly released Gemini 4 Hydrogen.
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The channel Lifey Guy published a YouTube video about the newly released Gemini 4 Hydrogen.
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Bijan Bowen published a YouTube video billed as a full test of Gemini 4 Hydrogen, comparing it with earlier Flash-class models.
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The account @patience_cave posted a chart of MazeBench scores the author lists for Gemini 4 Hydrogen, Claude Sonnet 5.5, and GPT-6.1 Terra.
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The official Parallel account (@p0) posted that Gemini 4 Hydrogen had been added to its Search Capabilities leaderboard, with a chart.
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Leo (@leo114119) posted a visual comparison of SVG gamepad drawings attributed to Gemini 4 Hydrogen and GPT-6.1 Sol.
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Haleemah (@Haleeeemahh) posted a side-by-side video of 3D koi-pond scenes the author says were built with Gemini 4 Hydrogen and Claude Sonnet 5.5.
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Tony (@EnvolDev) posted a timed, billed comparison of Gemini 4 Hydrogen and Gemini 4 Carbon on the same work, with a video of the run.
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In a three-part series, camper (@camperaigg) posted videos of Gemini 4 Hydrogen generating Three.js scenes: a voxel Chinese mountain temple, an ice crystal, and a shattering pot.
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The account @BuilderGuest posted a short clip the author describes as a Three.js frog-pond scene generated with Gemini 4 Hydrogen.
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Simon Willison (GitHub user simonw) opened and merged a pull request that adds Gemini 4 Hydrogen prices to the llm-prices repository.
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Piotr Olszewski at Promptowy published a Polish-language hands-on test of Gemini 4 Hydrogen on a 23-task set, with the author’s own cost and timing notes.
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Plotly published a blog post describing how Gemini 4 Hydrogen performed on the company’s PlotlyDataAnalyticsBench data-analysis evaluation.
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In a Hacker News comment, Simon Willison linked SVG pelican drawings he attributed to Gemini 4 Hydrogen, Argon, and Carbon.
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In a Hacker News comment, jjcm linked a live demo that turns an LCARS-style image into HTML and attributed the result to Gemini 4 Hydrogen.
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The repository locriani/benzene-langgraph describes a LangGraph whose nodes use Gemini 4 Hydrogen and Carbon, with a Kekulé benzene motif.
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Matthias Bastian at The Decoder reports on the Hydrogen announcement and compares Google’s published scores with those of Gemini 4 Argon, which had launched weeks earlier.
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Artificial Analysis maintains a public Gemini 4 Hydrogen model page and posted on X that the model tied for first on a GDPVal-style evaluation at medium reasoning.
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