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AIMarkTechPost · 81d ago

OpenAI Releases GPT-5.6 (Sol, Terra, Luna): A Three-Tier Model Family With Programmatic Tool Calling in the Responses API

A three-tier GPT-5.6 model family launched with pricing from $1 to $5 per 1M input tokens, with Sol tier scoring 80 on the Artificial Analysis Coding Agent Index. The key developer feature is Programmatic Tool Calling, which executes model-written JavaScript in an isolated V8 runtime to reduce prompt tokens by 38% at Clio and 63.5% at PlayCo.

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