A agentindex
Comparison

Devin vs OpenAI Codex

A like-for-like, spec-level comparison. Both entries are verified against their docs and repo.

Devin

Cognition's autonomous software engineer.

  • + True end-to-end autonomy
  • + No local setup
  • − Expensive and access-gated
  • − Less transparent than open alternatives

OpenAI Codex

OpenAI's open-source agentic coding CLI.

  • + Open-source CLI
  • + Sandboxed command execution
  • − OpenAI models only
  • − Newer, less battle-tested than incumbents
Spec Devin OpenAI Codex
Category coding-agent coding-agent
License Proprietary Apache-2.0
Open source No Yes
Self-hostable No No
MCP support No Yes
Pricing paid usage
Starting price $500/mo (access tier) Pay per token (OpenAI API)
Models claude, gpt gpt
Languages multi multi
GitHub stars — 93.6k
Last activity — 2026-06-25