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OpenAIProprietary
GPT-5.2-Codex
GPT-5.2-Codex is a programming-focused foundation model developed by OpenAI. It is equipped with advanced code generation capabilities and is provided as closed-source.
Parameters
Undisclosed
Context Window
License
Proprietary
Release Date
2025-12-18
API Pricing
API pricing for this model is not yet available
Strengths
- ・Highly advanced code generation
- ・Optimized by OpenAI
- ・Specialized for programming tasks
Weaknesses
- ・Proprietary closed-source model
- ・Cannot be freely modified
- ・Potential usage limitations exist
Use Cases
- ・Efficient automated code generation
- ・Implementing complex programs
- ・Increasing software development efficiency
Deep Analysis
Release Date
December 11, 2025
Context Window
400K tokens
Max Output
128K tokens
Pricing
$1.75 / $14.00 per 1M tokens
Strengths
- ・Full coding agent capabilities
- ・400K context
- ・90% cache discount
Weaknesses
- ・Superseded by GPT-5.3 Codex
- ・No variant-specific benchmarks
Competitor Comparison
| Model | SWE | Price |
|---|---|---|
| GPT-5.2 | 80.0% | $1.75/$14 |
| GPT-5.3 Codex | 56.8% | $1.75/$14 |
GPT-5.2 Codex is the coding variant with tool calling, reasoning, and vision.
Sources
Analysis generated: 2026-05-24