What happened
OpenAI announced GPT-5.5 on April 23, 2026. The new model focuses on three areas. It is stronger at coding tasks, better at using a computer through tools, and improved at deep research workflows. GPT-5.5 is available to Plus, Pro, Business, and Enterprise users in ChatGPT and inside the Codex coding assistant.
Why it matters
The release lands less than two months after GPT-5.4 shipped in March 2026. The fast cadence shows that flagship models are now updated more like software than yearly product launches. For coding and research workflows, the gap between major versions keeps closing.
MintedBrain take
For MintedBrain users, GPT-5.5 mainly matters for coding agents and longer research sessions. Eligible paid ChatGPT users should see GPT-5.5 appear as it rolls out, while API users can check OpenAI's model docs for availability. Codex and coding-heavy users will likely see the biggest day-to-day change.
Discussion
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