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GoogleReleased 2026-10-29

Gemini 4 Carbon

Gemini 4 Carbon is Google's next frontier model, announced October 29, 2026. It launches at the same introductory price as Argon — $2 per million input tokens and $10 per million output tokens, with cached input priced at 95% off the input rate. After the introductory period the price reverts to $4/$20. Currently available to a subset of cyber defenders, with access expanding through the Fairwind Program.

Context
1M tokens
Input
$2/1M
Output
$10/1M
Modalities
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💡 Introductory price. Cached input 95% off input price ($0.10). Standard after the introductory period: $4.00/$20.00.

Best For

Cybersecurity defenseLong-horizon agentic engineeringSecurity research

Strengths

  • Introductory $2.00/$10.00 per 1M — same as Argon
  • Cached input 95% off input price
  • 1M token context window
  • Purpose-built for sustained agentic and long-horizon engineering
  • First access via Fairwind Program for trusted cyber defenders

Weaknesses

  • Limited availability — not open to general developers, businesses or consumers yet
  • Introductory pricing ends without a published end date
  • Standard price is double the introductory rate

Related Alternatives

Gemini 4 Argon

Same pricing, already GA for all developers

Claude Opus 5.5

Fully available, $4.00/$20.00 standard rate

Frequently Asked Questions

How much does Gemini 4 Carbon cost?

Gemini 4 Carbon launches at $2 per 1M input tokens and $10 per 1M output tokens, with cached input tokens priced at 95% off the input token price ($0.10). After the introductory period expires, $4 per 1M input and $20 per 1M output will apply.

Who can use Gemini 4 Carbon right now?

Access is currently limited to a subset of cyber defenders, with Google gradually expanding access to additional trusted partners through the Fairwind Program. It is not yet available to general developers, businesses or consumers.

How is Gemini 4 Carbon different from Gemini 4 Argon?

They share the same introductory price and the same 1M context window. The difference is availability — Argon is generally available to developers, while Carbon is being rolled out first to security-focused partners via the Fairwind Program.

See Gemini 4 Carbon's full record in our database

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