GPT-5.5
Available · Language, Multimodal, Reasoning · Primary source available
- Lifecycle
- Milestone or variant
- Related model
- Source event
- AI Radar coverage
- Only month or year known
- 7 events
2025
2026
As of 10 October 2026
Released +3
Released in the API
Predecessor GPT-5.4
Successor GPT-5.6 Sol
All events, in order
- Lineage Predecessor GPT-5.4
- Lifecycle Released
- Milestone GPT-5.5 Pro released
- Source Announcement published
- Source System card published
- Milestone Released in the API
- Lineage Successor GPT-5.6 Sol
← The full record of GPT-5.5, with every claim and its sources