Gemini 4 Carbon

About Gemini 4 Carbon

Best for

• Tracking down and fixing subtle bugs across large codebases
• Long, multi-step agent work that has to stay within scope
• Finding, validating and patching security vulnerabilities
• Research and analysis where an unsupported claim is costly

Questions about Gemini 4 Carbon

What is Gemini 4 Carbon?

Gemini 4 Carbon is a chat model by Google.

Is Gemini 4 Carbon free?

Gemini 4 Carbon needs the Hobby plan or higher, so the Free plan doesn't include it. The Free plan gives you 100 credits when you create a workspace and 50 credits every week to try other chat models.

How much does Gemini 4 Carbon cost?

In Endless it costs 307.7 credits per 1M input tokens and 1538.5 per 1M output tokens, on the Hobby plan and up.

How do I use Gemini 4 Carbon?

Start a chat in your Endless workspace and choose Gemini 4 Carbon in the model picker. Endless can also pick the best model for each message on its own.

What are the alternatives to Gemini 4 Carbon?

Similar models you can use in Endless include Gemini 4 Argon, Gemini 3.8 Flash, and GPT-6.1 Terra. Each one has its own page with its price and plan.

What is new in Gemini 4 Carbon?

It is Google's strongest model for long, hard tasks. Google reports it ranks first on the Artificial Analysis Intelligence Index v5.0 and leads security benchmarks such as SEC-bench Pro, at 88.2%.

Should I use Carbon or Argon?

Google recommends Argon for most coding and knowledge work, and Carbon for the hardest multi-step problems, where it spends more tokens to reason and verify its answers.

When was Gemini 4 Carbon released?

Google announced it on October 28, 2026 for a group of security partners and made it available to developers, businesses and consumers on November 10, 2026.