OpenAI Codex
✓The AI model that powers GitHub Copilot - Evolving into an Agent
LLM / Model
OpenAI Codex was the original AI model capable of translating natural language to code, powering tools like GitHub Copilot. While the original standalone API was deprecated in 2023, the 'Codex' brand was revived in late 2025 as an autonomous software engineering agent. OpenAI continues to release specialized coding models under the Codex lineage, such as GPT-5.1-Codex, ensuring it remains at the forefront of AI code generation.
Paid
Key Features:
- •Natural language to code translation
- •Powers GitHub Copilot
- •Proficient in 12+ languages
