Latest change released Gemini 3.1 Flash-Lite: Gemini 3.1 Flash-Lite released by google. 1,048,576-token context. 20d ago
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Model profile

GPT-5.3 Codex

openai · released 2026-02-24 · ga · proprietary

textcode codingagentic
votes

Use it

OpenAI Responses API

curl https://api.openai.com/v1/responses \
  -H "Authorization: Bearer $OPENAI_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gpt-5.3-codex",
    "input": "Summarize the latest product changes in three bullets."
  }'

Verify the exact model identifier in the provider docs before production use. ai-tracker stores canonical ids and pricing snapshots, not account entitlements.

Availability

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Timeline

  1. released

    GPT-5.3 Codex released by openai. 400,000-token context. source

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