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OpenAI: GPT-5.3-Codex

openai/gpt-5.3-codex
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GPT-5.3-Codex is OpenAI’s most advanced agentic coding model, combining the frontier software engineering performance of GPT-5.2-Codex with the broader reasoning and professional knowledge capabilities of GPT-5.2. It achieves state-of-the-art results...

Modalities
In / Out Price
$1.75 / $14 per 1M
Context
400K
Released
Feb 24, 2026
Knowledge Cutoff
—

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