Gemini 4 Carbon is Google's most capable Gemini model. Use it for complex software engineering, long agentic coding tasks, and document-heavy work. For faster, lower-cost everyday work, use [Gemini 4 Hydrogen](https://cursor.com/docs/models/gemini-4-hydrogen.md).

## Strengths

- Clear, plain explanations: it describes its changes and reasoning directly, without padding.

## Effort levels

Gemini 4 Carbon supports three effort levels: high, medium (the default), and low. Raise it to high for the hardest tasks, or drop to low for faster responses on simpler ones.

## Tools

Gemini 4 Carbon has access to all agent tools when used with Cursor including:

Learn more about [how tools work](https://cursor.com/docs/agent/overview.md#tools) and [tool calling fundamentals](https://cursor.com/learn/tool-calling.md).

## Pricing

Gemini 4 Carbon is a third-party model, so it isn't part of the usage included with Cursor [plans](https://cursor.com/docs/models-and-pricing.md#third-party-models). On The X Subscription it's billed at the rates below from your prepaid credit. On legacy Cursor plans it draws from the **Other Models** pool. All prices are per million tokens.

These are Google's introductory rates, available through November 30, 2026. From December 1, 2026, Gemini 4 Carbon is billed at $4 input, $0.20 cache read, and $20 output per million tokens.


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## Sitemap

[Overview of all docs pages](/llms.txt)