GPT-5.3 Instant (source unspecified)
OpenAI
This benchmark entry retains GPT-5.3 Instant observations whose source does not identify the evaluated version behind the mutable gpt-5.3-chat-latest route. The March 3, 2026 launch and March 16 update have separate artifact rows; undated aliases and later cards' latest-version comparisons remain here unless their checkpoint can be established independently.