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GPT-5.6 Released: What It Is and What Makes It Great

This story is from 2026-09-21. It is preserved in the archive; the latest stories are on the live feed.

Featured Snippet Answer GPT-5.6 is OpenAI's new model family, announced on June 26, 2026, and now available only through a limited preview for selected trusted partners via the OpenAI API and Codex. The family has three tiers: GPT-5.6 Sol, the flagship model for the hardest reasoning, coding, cyber…

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  1. 2026-09-21 03:46 · DEV Community — AI
    GPT-5.6 Released: What It Is and What Makes It Great

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