Models · MarkTechPost ·
OpenAI Releases GPT-5.6 (Sol, Terra, Luna): A Three-Tier Model Family With Programmatic Tool Calling in the Responses API
OpenAI released GPT-5.6 as a general-availability three-tier model family: Sol, Terra, and Luna. The update adds Programmatic Tool Calling in the Responses API, which lets model-written JavaScript orchestrate tools in an isolated V8 runtime, and OpenAI says it reduces token use in some workflows.