When was Gemini 4 Hydrogen released?

Google released Gemini 4 Hydrogen on 12 Nov 2026. It is available through the Opper gateway.

Does Gemini 4 Hydrogen support zero data retention?

With abuse monitoring, yes. On Google Cloud through the Opper gateway, prompts and outputs are not used for training and are kept only for abuse monitoring. Zero data retention, with no monitoring hold, is available on Google Cloud under a signed Enterprise agreement.

Where is Gemini 4 Hydrogen hosted?

Gemini 4 Hydrogen runs on both EU and US hosting routes through the Opper gateway. Pick the route that matches your residency requirement.

Is Gemini 4 Hydrogen trained on prompts and outputs?

No. Every hosting route for Gemini 4 Hydrogen is configured so customer prompts and outputs are not used to train models by default.

Gemini 4 Hydrogen

by Google

Released 1 days after Gemini Decision 1 · Announcement · All Google releases

Gemini 4 Hydrogen is Google’s multimodal model for everyday coding, interactive applications and agentic workflows. It accepts text, images, audio, video and PDFs, and returns text. Input, reasoning and output share a 1,048,576-token window. The model supports low, medium, high and xhigh thinking levels; high is the provider default. Opper’s synchronous endpoints expose up to 65,536 output tokens per request. Longer generation requires Google’s continuation or background workflow, which this rollout does not expose. Sampling controls are fixed by the provider, and caching is implicit only.

Call Gemini 4 Hydrogen on Opper with the OpenAI SDK. Sign up without a credit card. Get started

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Key info

Input

Output

Features

Context window

Max output

66K

Input price

$1.50 /1M$0.07 cache read

Output price

$7.50 /1M

Released

12 Nov 2026

Web search

Via Opper

EU residency available on Google Cloud
US residency available on Google Cloud
Zero data retention with abuse monitoring
Zero data retention on Enterprise
No training by default

Available routes

Gemini 4 Hydrogen runs on 5 different routes through the Opper gateway. Compare residency, zero data retention and training posture at a glance, with full data-handling detail per route below. Zero data retention on Google Cloud is available on Enterprise. In the EU it is served by Google Cloud. See every Gemini model hosted in the EU.

Provider	Region	Training	Input	Output	Cache read
Google Cloud	US	No	$1.50	$7.50	$0.07
Google Cloud	Multi	No	$1.50	$7.50	$0.07
Google Cloud	EU	No	$1.65	$8.25	$0.08
Google Cloud	Multi	No	$1.50	$7.50	$0.07
Google Cloud	EU	No	$1.65	$8.25	$0.08

Live routes and prices as JSON: api.opper.ai/v3/models?q=gemini-4-hydrogen

Uptime and availability

Gemini 4 Hydrogen runs on a single route through the Opper gateway today, so its availability is that provider's availability.

98.86%route uptime, last 30 days

Single route, no failover target within this model.

Name a second model in the same request and the gateway tries it on retriable errors, so a busy hour never has to reach your users. Set up a fallback chain.

Measured over the last 30 days from each provider's official status feed via StatusGator. Refreshed hourly. See uptime for every provider Opper monitors.

Data handling per route

Each route hosting Gemini 4 Hydrogen has its own privacy posture, residency, and GDPR terms. Postures are maintained by Opper with a last-verification timestamp.

Google Cloud — United States🇺🇸

Zero data retention with abuse monitoring: prompts and outputs are kept for abuse monitoring only, for a window the provider does not state, and are not used for training. No training on customer data. US; SCCs.

Zero data retention: With abuse monitoring, window not stated.
Training: No training on customer data.
Logging: Abuse monitoring
Abuse monitoring: On by default, holds flagged content, 55 days, a person can view samples
Transfer mechanism: SCCs

Google Cloud — Multi-region

Zero data retention: nothing is logged, held for abuse monitoring or used for training. Available under a signed Enterprise agreement. No training on customer data. GLOBAL; SCCs.

Zero data retention: Yes, on Enterprise. Nothing is logged, held for abuse monitoring or used for training.
Plan: Signed Enterprise agreement
Training: No training on customer data.
Logging: None
Abuse monitoring: On by default, keeps nothing
Caching: Content cached for replay
Transfer mechanism: SCCs

Google Cloud — EU🇪🇺

Zero data retention: nothing is logged, held for abuse monitoring or used for training. Available under a signed Enterprise agreement. No training on customer data. EU.

Zero data retention: Yes, on Enterprise. Nothing is logged, held for abuse monitoring or used for training.
Plan: Signed Enterprise agreement
Training: No training on customer data.
Logging: None
Abuse monitoring: On by default, keeps nothing
Caching: Content cached for replay
Transfer mechanism: Not applicable — data stays in EU

Google Cloud — Multi-region

Zero data retention with abuse monitoring: nothing is logged or used for training; content flagged by abuse monitoring is held for review. No training on customer data. GLOBAL; SCCs.

Zero data retention: With abuse monitoring, flagged content held.
Training: No training on customer data.
Logging: None
Abuse monitoring: On by default, holds flagged content, 90 days, a person can view samples
Transfer mechanism: SCCs

Google Cloud — EU🇪🇺

Zero data retention with abuse monitoring: nothing is logged or used for training; content flagged by abuse monitoring is held for review. No training on customer data. EU.

Zero data retention: With abuse monitoring, flagged content held.
Training: No training on customer data.
Logging: None
Abuse monitoring: On by default, holds flagged content, 90 days, a person can view samples
Transfer mechanism: Not applicable — data stays in EU

Best for

Where Gemini 4 Hydrogen ranks among the models on Opper with a score for each use case.

Finance#4 of 4858.1

Finance and accountingSee the Finance ranking →Legal#4 of 4856.7

Legal tasks and reasoningSee the Legal ranking →Agents#6 of 8964.8

Terminal-Bench 4.0 and AutomationBenchSee the Agents ranking →Coding#8 of 4744.8

FrontierCode 2.0 and Terminal-Bench 4.0See the Coding ranking →

Benchmarks

Independent benchmark scores: the Intelligence Index and the individual evaluations behind it, grouped by skill.

Global rank#7 of 512 LLMs

TierFrontier

Output speed256 tok/s

Intelligence Index53.9

Coding

FrontierCode 2.0

39%

Terminal-Bench 4.0

54%

Agentic & knowledge work

AutomationBench

76%

GDP.pdf

33%

Briefcase (Elo)1567

Science & reasoning

Terminal-Bench Science

50%

CritPt (hard)

66%

HLE Diamond

59%

Knowledge

Omniscience46.3

By domain

Finance & accounting

58.1

Legal

56.7

Engineering

60.1

Economics

55.0

Strategy & operations

57.7

See full leaderboard →Benchmarks via Artificial Analysis · View on AA

Get started

Call Gemini 4 Hydrogen through the Opper gateway with one API key. Opper is drop-in compatible with the OpenAI, Anthropic and Google AI SDKs.

Gemini 4 Hydrogen is a premium model on Opper. Sign up needs no credit card: you get an API key straight away and the free models work in the playground and the API. Add a card to use premium models, pay-as-you-go with no minimum.

Set it up with your agent

Copy this and paste it into a coding agent like Claude Code, Cursor or Codex and it'll wire up Opper for you.

Or call it directly

1import OpenAI from "openai";
2
3const client = new OpenAI({
4  apiKey: process.env.OPPER_API_KEY,
5  baseURL: "https://api.opper.ai/v3/compat",
6});
7
8const completion = await client.chat.completions.create({
9  model: "gemini-4-hydrogen",
10  messages: [{ role: "user", content: "Hello" }],
11});
12console.log(completion.choices[0].message.content);