AI Radar

GPT-5.1

Deprecated · Language, Multimodal, Reasoning · Primary source available

All events, in order

  1. Lineage Predecessor GPT-5
  2. Lifecycle Released
  3. Source Announcement published
  4. Source System card published
  5. Milestone Released in the API
  6. Source Announcement published
  7. Milestone GPT-5.1 Pro released in ChatGPT
  8. Milestone GPT-5.1 Pro released
  9. Lineage Successor GPT-5.2
  10. Milestone Removed from ChatGPT
  11. Milestone gpt-5.1-chat-latest shut down in the API
  12. Lifecycle Deprecated

← The full record of GPT-5.1, with every claim and its sources