GPT-5.3 Instant
Retired · Language, Multimodal · Primary source available
- Lifecycle
- Milestone or variant
- Related model
- Source event
- AI Radar coverage
- Only month or year known
- 9 events
2025
2026
As of 10 October 2026
Released +2
Deprecated
Retired
Predecessor GPT-5.2
Announcement published +1
System card published
All events, in order
- Lineage Predecessor GPT-5.2
- Lifecycle Released
- Source Announcement published
- Source System card published
- Source System card published
- Lineage Successor GPT-5.5 Instant
- Source Announcement published
- Lifecycle Deprecated
- Lifecycle Retired
← The full record of GPT-5.3 Instant, with every claim and its sources