This page may contain stale information. Last updated: 2026-06-01
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Contradiction
OpenAI announced GPT-5.5 on 2026-04-24 (2026-04-24-openai-gpt-55-launch), while a separate “release” event is dated 2026-04-27 (2026-04-27-openai-gpt-55-release). These may reflect announcement vs. broader availability — verify against official OpenAI communications.
Overview
Initial public launch of GPT-5.5 with agentic capabilities on April 24, 2026.