LLMAPI only
Codex
OpenAI
Updated May 21, 2026 · Benchmarks via Artificial Analysis, specs & pricing via OpenRouter · Methodology · Report an error
Specifications
- Type
- LLM
- Access
- API only
- Released
- August 10, 2021
- Input
- Text
- Output
- Text
Our take
A GPT-3 descendant fine-tuned on code that powered the first GitHub Copilot, launching the modern AI coding-assistant era.