GPT-5 Codex
GPTSpecialized
Performance Tier
Specialized
GPT-5 Codex is a specialized model from GPT : built for a specific domain.
Domain-specific model. Optimized for a particular task such as code generation, image creation, or web search.
Capabilities
Context Length—
Max Output Tokens—
Benchmarks
Programming
HumanEval
93%
SWE-bench Verified
67.2%
Where does GPT-5 Codex stand?
Compare its performance index against every other model.
Recommended Use Cases
Coding
Strengths
- Dedicated coding model built on GPT-5 architecture
- Good multi-file editing capabilities
- More affordable than GPT-5.1/5.2 Codex variants
Limitations
- Outperformed by newer Codex models on SWE-bench
- Limited to coding use cases
Frequently asked questions
Resources
This model may use your data for training
