coding
Codex
by OpenAI
OpenAI Codex is a cloud-based software engineering agent capable of autonomously completing coding tasks such as writing features, fixing bugs, running tests, and navigating codebases — operating in isolated sandboxes in parallel. It is available as both a cloud agent integrated into ChatGPT and an open-source CLI tool (Codex CLI), competing directly with Claude Code, Devin, and similar agentic coding products. The agent is powered by codex-1, a model fine-tuned for agentic software engineering tasks.
8 Overall Score
Scores
Capability 9
Ease of Use 7
Documentation 8
Reliability 7
Value 7
Momentum 9
Details
- Status
- active
- Pricing
- freemium
- Launch Date
- Website
- https://openai.com/codex
- Last Updated
Key Features
- Autonomous multi-task execution in parallel cloud sandboxes
- Full repo context: reads, edits, creates files and runs terminal commands
- GitHub integration for PR creation and code review workflows
- Open-source Codex CLI for local terminal-based agentic coding
- Powered by codex-1, a model fine-tuned specifically for software engineering tasks