The Builder's Guide to GPT-5.6
OpenAI, Thursday, August 13th, 2026
OpenAI publishes a builder's guide to GPT-5.6 covering model selection and new Responses API capabilities.
OpenAI published a builder's guide to GPT-5.6 aimed at startups building AI agents.
The guide covers how to build faster and more cost-efficiently through smarter model selection across the GPT-5.6 family. It also details new capabilities in the Responses API.
The material addresses the practical tradeoffs between capability, latency and cost. It is targeted at developers moving agent prototypes toward production.