GPT-5.3-Codex
GPT-5.3-Codex by OpenAI: intelligence index 77.1, $1.75 in / $14.00 out per 1M tokens, 400K context, with a source on every number.
- Vendor
- OpenAI
- Intelligence index
- 77.1
- Price per 1M tokens
- $1.75 in · $14.00 out
- Context
- 400K tokens
- Released
- 2026-02-24