OpenAI · First-party API · LLM

gpt-5.3-chat-latest

Shut downShut down on Aug 10, 2026Published date has passed

Provider-recommended replacement: gpt-5.6-sol

2 notices

Shut downPublished date has passed

OpenAI lists Aug 10, 2026 as the shutdown date. Listed model identifier.

| Aug 10, 2026 | gpt-5.3-chat-latest | gpt-5.6-sol |

Read from the provider's table: each value comes from its row, with the row's scope kept.

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Release announced

OpenAI announced this model on 2026-03-03. API: v1/chat/completions · API: v1/responses.

Released gpt-5.3-chat-latest to the Chat Completions and Responses API.

Read from the provider's text; the quote is the provider's exact lines.

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