o3
Deprecated · Language, Multimodal, Reasoning · Milestone · Primary source available
- Lifecycle
- Milestone or variant
- Related model
- Source event
- AI Radar coverage
- Only month or year known
- 11 events
2024
2025
2026
As of 10 October 2026
Announced +1
Released +2
Deprecated
Predecessor o1
Successor GPT-5
Variant o3-pro
Announcement archived
1 news item
All events, in order
- Lineage Predecessor o1
- Lifecycle Announced
- Source Announcement published
- Lifecycle Released
- Source Announcement published
- Source System card published
- Lineage Variant o3-pro
- August 2025 AI Radar 1 news item · Snapshots kept after items leave the live feed
- Lineage Successor GPT-5
- Lifecycle Deprecated
- Source Announcement archived