Gemini 4 Carbon vs Claude Fable 5.2 for agents: $0.25 a turn, or $1.00 · AI Agents Info
AI-generated summary Gemini 4 Carbon costs $0.25 per turn through November 30, 2026, and $0.50 starting December 1, while Claude Fable 5.2 costs $1.00 for the same token counts. Google states that Gemini 4 Carbon is built for tasks that use more tokens than Gemini 4 Argon.