GPT-5 Codex
GPTSpecialized
ThinkingTool UseVisionStructured Output
About this model
GPT-5-Codex is a specialized version of GPT-5 optimized for software engineering and coding workflows. It is designed for both interactive development sessions and long, independent execution of complex engineering tasks....
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.
Pricing
This model is included in Elosia plans| Type | per 1M tokens |
|---|---|
| Input (prompt) | $1.25 |
| Output (completion) | $10.00 |
| Cache read | $0.125 |
Capabilities
Context Length400K
Max Output Tokens128K
TokenizerGPT
Inputtext, image
Outputtext
Release DateSeptember 23, 2025
Benchmarks
Programming
HumanEval
93%
SWE-bench Verified
67.2%
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
Resources
This model may use your data for training