Launch · 1 min read
GPT-5.5 Released: Built for Coding and Research, With Instant Becoming ChatGPT's New Default
OpenAI released GPT-5.5 on April 23, 2026 for coding, research and data analysis; GPT-5.5 Instant became ChatGPT's default in May.
Tag: ChatGPT
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Launch · 1 min read
GPT-5.1 Released: A Warmer ChatGPT With Eight Personality Presets
OpenAI released GPT-5.1 on November 12, 2025, adding adaptive reasoning, a warmer conversational style and eight personality presets.