GPT-5.3 Instant (2026-03-16)
OpenAI · 2026-03-16
This is the GPT-5.3 Instant update released on March 16, 2026, improving follow-up tone and reducing teaser-style phrasing. OpenAI updated gpt-5.3-chat-latest to the newer model used in ChatGPT without publishing a separately pinned machine identifier; this artifact is distinct from the version evaluated in the March 3 launch card.
Benchmark scores
| Benchmark | Score |
|---|
No benchmark scores recorded.