Google's Gemini 4 Carbon lands on Vercel AI Gateway
Vercel has added Google's Gemini 4 Carbon to AI Gateway, so the model can be called through the same unified API as other providers. Google built Carbon for complex software engineering, sustained agentic work and cybersecurity defense, giving it a 1M-token context window for large codebases and long inputs. Per the changelog, it improves on coding, full-stack web development and scientific reasoning, and Google reports more dependable execution of multi-step plans and fewer unsupported claims.
The model is listed as google/gemini-4-carbon and is offered at 50% off through November 30, 2026. After installing the latest Vercel CLI and running setup, developers can pick it inside agents such as Claude Code, Codex and Cursor, or try it in the model playground. AI Gateway uses provider pricing with no markup or inference platform fee.
Why it matters
Teams already routing requests through AI Gateway can adopt Gemini 4 Carbon without building a new integration, and the temporary discount makes it cheaper to test long-context coding and agent workflows.
Sources
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