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GPT-5.2 Codex
openai/gpt-5.2-codexopenai
A Codex-series model for software engineering, complex coding and repository-scale tasks.
Context
400,000
≈ 400K
Max output
128K
128,000
Price ($/1M tokens)
—
Specs
Input
TextImagepdf
Output
Text
Reasoning
Yes
Tool call
Yes
Structured
Yes
Weights
Unknown
Released
2025-12-11
Free on relays
1