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GPT-5.3-Codex
openai/gpt-5.3-codex
OrganizationOpenAI
FamilyGPT
Released2026-02-05
Context window400K
Max output128K
Input
ImageText
Output
Text
Providers-
Price-
WeightsClosed
Attachments
Native
Reasoning
Native
Tool call
Native
Structured
Native
Temperature-
Open weight-
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