Gemini 3.8 Flash and Claude Fable 5.1 are now live on CometAPI →

GPT-5.6 Sol Blog

GPT-5.6 API: Pricing, Sol vs Terra vs Luna, Benchmarks, and Access
Sep 4, 2026
GPT-5.6
OpenAI
GPT-5.6 Sol

GPT-5.6 API: Pricing, Sol vs Terra vs Luna, Benchmarks, and Access

Compare GPT-5.6 API pricing, Sol, Terra, and Luna capabilities, availability, benchmarks, model selection, and CometAPI access with current code examples.