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OpenAI Releases Builder Guide for GPT-5.6

OpenAI published a technical resource titled The builder’s guide to GPT‑5.6 on Aug. 13, 2026.

By Xentir Media Newsroom · Editorial standards by Jomon · August 13, 2026 · 1 min read
WHAT YOU NEED TO KNOW
  • OpenAI published documentation titled The builder’s guide to GPT‑5.6.
  • The official release timestamp was recorded at 11:00 UTC on Aug. 13, 2026.
EPOCH CAPABILITIES INDEX (ECI)GPT-5.6 Sol162GPT-5.5 Pro161Claude Fable 5161Claude Opus 5159GPT-5.5158GPT-5 (07 Aug 2025)150Source: Epoch AI Benchmarking Hub - CC BY 4.0 - as of 2026-07-31

OpenAI published documentation titled "The builder’s guide to GPT‑5.6" on Aug. 13, 2026.

The release provides information aimed at software builders working with GPT‑5.6.

OpenAI logged the official publication timestamp for the material at 11:00 UTC.

SOURCES
The builder’s guide to GPT‑5.6 — OpenAI
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