A Model Guide for the GPT-6 Family
OpenAI, Friday, October 2nd, 2026
OpenAI's practical guide to choosing GPT-6 models, tuning reasoning effort, and preparing agent workflows for production.
OpenAI published a practical guide for builders working with the GPT-6 model family, explaining how to match model, reasoning effort and speed to a workload to balance capability, cost and latency.
The guide covers using caching and compaction to manage context and cost, keeping prompts, skills and repository instructions consistent, and using steering, async tools and delegation to keep long-running work on track.
It also recommends measuring task success and latency and planning for monitoring and data controls before deployment.