GPT-5.2 Codex
Parameters
Undisclosed
Context Length
400K
Modality
Text
Architecture
Undisclosed
License
Proprietary
Release Date
13 Nov 2025
Knowledge Cutoff
Aug 2025
API Pricing (per 1M)
Input: $1.75 · Output: $14.00
Evaluation Benchmarks
Rank
#56
| Benchmark | Score | Rank |
|---|---|---|
Coding | 0.84 | 4 |
Software Engineering | 0.73 | 10 |
Data Analysis | 0.78 | 16 |
Mathematics | 0.89 | 26 |
Agentic Coding | 0.49 | 29 |
General | 0.74 | 31 |
LiveBench Average | 0.74 | 31 |
Reasoning | 0.78 | 40 |
Intelligence Index | max 0.33 | 76 |
Web Development | 1338 | 83 |
Rankings
Overall Rank
#56
Coding Rank
#36
About GPT-5.2 Codex
GPT-5.2 Codex is OpenAI's specialized coding model engineered for autonomous multi-file refactoring, visual UI debugging, and secure system design. It delivers persistent long-session coherence supported by advanced context compaction.
Technical Specifications
Architecture specifications are undisclosed for proprietary models.
Resources
About GPT-5
OpenAI's latest generation of language models featuring advanced reasoning capabilities, extended context windows up to 400K tokens, and specialized variants for coding, general intelligence, and efficiency. GPT-5 series introduces improved thinking modes, superior performance across benchmarks, and variants optimized for different use cases from high-capacity Pro models to efficient Nano models. Features native multimodal understanding, enhanced mathematical reasoning, and state-of-the-art coding abilities through Codex variants.