Changelog

ChatGPT changelog

This page shows the recent feature releases, price changes, improvements, and bug fixes recorded for the tool.

featureMay 5, 2026

ChatGPT added memory sources, made GPT-5.5 Instant the default model, and launched Excel and Google Sheets sidebars globally.

featureApril 23, 2026GPT-5.5 rollout

OpenAI rolled GPT-5.5 into ChatGPT, with GPT-5.3 remaining the Free and Go baseline, GPT-5.5 Thinking becoming the clean Plus upgrade, GPT-5.5 Pro on Pro, and flexible GPT-5.5 Thinking and GPT-5.5 Pro access on Business and Enterprise.