Devin vs OpenAI Codex CLI
According to AI Tier List, OpenAI Codex CLI (Tier A) ranks higher than Devin (Tier D) for Coding & Development. CLI coding tool included with ChatGPT Plus
 |  | |
|---|---|---|
| Tier | Tier D | Tier A |
| Rating | 1 / 5 | 4 / 5 |
| Pricing | Paid | Paid |
| Category | Coding & Development | Coding & Development |
| Best For | Agentic, Overhyped, Low Success Rate | CLI, Agentic, Async, Cloud Agent |
Devin — Strengths
Fully autonomous agent vision, ecosystem expansion with Windsurf acquisition, some enterprise success stories
Devin — Weaknesses
15% task success rate, overhype, price collapse ($500→$20), Reddit 'junior level' rating, requires human supervision
OpenAI Codex CLI — Strengths
Included with ChatGPT Plus (no extra cost), 50% cheaper than Claude, cloud agent mode, GPT-5.1 performance
OpenAI Codex CLI — Weaknesses
Less autonomous than Claude Code, CLI-only, locked into OpenAI ecosystem