The Model Gap

Google DeepMind

Gemini 4 Hydrogen

Gemini 4 Hydrogen launched on 2026-11-12 under API id gemini-4-hydrogen, with text, image, video, audio, and PDF input, text output, a 1,048,576-token unified context, and a flat paid Standard rate of $1.50/$7.50 per million tokens across that window. A Free tier exists. No Gemini 4 Hydrogen score row is stored. Carbon, Argon, and Gemini 3.8 Flash are not superseded.

Gemini 4 Hydrogen benchmarks and pricing, every number sourced: no Gemini 4 Hydrogen benchmark scores tracked yet, priced at $1.50 per million input tokens and $7.50 per million output.

Released
2026-11-12
License
proprietary
Context window
1M tokensvendor-stated (aistudio.google.com/docs/models/gemini-4-hydrogen: unified context window 1,048,576; checked 2026-11-13)
Knowledge cutoff
Not disclosed
Parameters
Not disclosed
Architecture
Not disclosed

Gemini 4 Hydrogen API pricing

$1.50 in / $7.50 out per 1M tokens — official pricing source

What Gemini 4 Hydrogen costs per job

Gemini 4 Hydrogen cost for three reference workloads, computed from its list rates
WorkloadTokens in / outCost
One long chat turn100K / 10K$0.225
A codebase review1,000K / 100K$2.25
A day of agent work10,000K / 1,000K$22.50

Computed from Gemini 4 Hydrogen’s list rates above — cache discounts and batch tiers are not applied.

Gemini 4 Hydrogen is one of 7 Google DeepMind models tracked on this site, at these official list prices.

Google DeepMind model pricing, official list rates
ModelIn / 1MOut / 1M
Gemini 4 Hydrogen$1.50$7.50
Gemini Decision 1$0.10$0.00
Gemini 4 Carbon$4.00$20.00
Gemini 4 Argon$4.00$20.00
Gemini 3.8 Flash$0.75$3.75
Gemini 3.7 Flash(previous version)$0.75$3.75
Gemini 3.1 Pro Preview$2.00$12.00

Notes on the record

Google's blog dated November 12, 2026, written by Koray Kavukcuoglu, introduces Gemini 4 Hydrogen under the stable API id gemini-4-hydrogen. Five official posts that day are cited by timestamp only: @sundarpichai 2026-11-12T18:02:12Z, @GoogleDeepMind 2026-11-12T18:02:36Z, @GoogleAI 2026-11-12T18:03:58Z, @GoogleAIStudio 2026-11-12T18:04:32Z, and @Google 2026-11-12T18:09:08Z. The AI Studio model page checked 2026-11-13 lists text, image, video, audio, and PDF in, and text out.

The Gemini 4 Hydrogen model page states one unified context window of 1,048,576 tokens, a default synchronous output cap of 65,536, and long decode up to 1,048,576. Caching is supported and explicit caching is not. Batch, Flex, Priority, and Thinking are supported. Image generation, audio generation, and the Live API are not. Knowledge cutoff, parameter count, and architecture are unpublished. The license is proprietary.

Paid Standard, checked 2026-11-13, is a flat $1.50/$7.50 per million tokens across that window, including thinking tokens, with implicit cache at $0.075. The Hydrogen table has no introductory period and no December 1 step-up. Batch and Flex are $0.75/$3.75 with cache $0.0375. Priority is $2.70/$13.50 with cache $0.135. Caches are implicit only. A Free tier lists input, output, and caching as free of charge. Grounding is unavailable on Free, and free-tier content may be used to improve products. Paid content is not used to improve products. Every token is billed, including thinking tokens and, when grounding is on, internal tool instructions and function declarations. The stored headline is $1.50/$7.50. The Free tier is not stored as $0.

The public rate-limits page has no RPM, TPM, or RPD table for Gemini 4 Hydrogen. Interactive limits are viewed in AI Studio. Batch enqueued-token caps are 3,000,000 on Tier 1, 400,000,000 on Tier 2, and 1,000,000,000 on Tier 3. No Gemini 4 Hydrogen score row is stored, and blog eval claims stay off the tracked boards. Carbon and Argon remain the frontier pair. Migration language about Gemini 3.8 Flash is not a deprecation of Carbon, Argon, or Gemini 3.8 Flash.

Compare with

Gemini Decision 1Gemini 4 CarbonGemini 4 ArgonGemini 3.8 Flashany model…

FAQ

What does Gemini 4 Hydrogen cost?

Paid Standard is $1.50 input and $7.50 output per million tokens, including thinking tokens, across the full 1,048,576-token window. Implicit cache is $0.075. Batch and Flex are $0.75/$3.75 with cache $0.0375. Priority is $2.70/$13.50 with cache $0.135. A Free tier lists input, output, and caching as free of charge, and that is not the stored headline. Checked 2026-11-13 on the Gemini 4 Hydrogen pricing page.

What is Gemini 4 Hydrogen's context window?

The model page checked 2026-11-13 states one unified context window of 1,048,576 tokens. Default synchronous output is 65,536 tokens. Long decode can raise output to 1,048,576. Caching is supported. Explicit caching is not. This page stores 1,048,576, not a rounded 1,000,000.

Does Gemini 4 Hydrogen have a free tier?

Yes. The pricing table lists input, output, and context caching as free of charge on the Free tier. Grounding is not available there, and free-tier content may be used to improve products. Paid content may not. The stored price is the paid $1.50/$7.50 Standard rate. The Free tier is not stored as $0.

What can Gemini 4 Hydrogen take in, and what does it return?

Gemini 4 Hydrogen accepts text, image, video, audio, and PDF, and returns text. Image generation, audio generation, and the Live API are not supported. Batch, Flex, Priority, and Thinking are supported. The blog describes thinking levels of low, medium, high (the default), and xhigh. Those levels are a vendor description, not a score.

What are Gemini 4 Hydrogen grounding rates and rate limits?

Paid Google Search grounding is 5,000 requests a month free, shared across Gemini 3 and newer, then $14 per 1,000, with a daily cap of 1,500. Maps uses the same 5,000 free requests, then $14 per 1,000. Grounding is not available on the Free tier. The public rate-limits page has no RPM, TPM, or RPD table for Gemini 4 Hydrogen. Interactive limits are viewed in AI Studio. Batch enqueued-token caps are 3,000,000 on Tier 1, 400,000,000 on Tier 2, and 1,000,000,000 on Tier 3. Checked 2026-11-13.

Does Gemini 4 Hydrogen replace Gemini 4 Carbon, Argon, or Gemini 3.8 Flash?

No. Gemini 4 Hydrogen is a new Gemini 4 model aimed at speed and everyday coding and agentic work. Carbon and Argon remain the frontier pair. Migration language about Gemini 3.8 Flash is not a deprecation, and this page does not mark Carbon, Argon, or Gemini 3.8 Flash superseded.

Has Gemini 4 Hydrogen been independently benchmarked?

No. No tracked independent board had a Gemini 4 Hydrogen row at the 2026-11-13 check, so this page stores no score. The launch blog's Artificial Analysis Index, speed comparison with Gemini 3.8 Flash, and named evals stay vendor claims.

Further reading