OpenAI Codex vs OpenCode: what developers actually say
Based on 2,793 opinions on Hacker News from developers who discussed these two, most of them first-hand users.
Codex comes out ahead overall: 69% approval vs 66%, 2,013 opinions vs 780, and 14 explicit picks vs 7. It leads on code quality (343 positive to 116 negative vs 19 to 17), speed, autonomy and usage limits, while reliability is negative for both and worse for OpenCode (39 to 83 vs 112 to 127). OpenCode wins on cost (113 positive to 24 negative), customization (83 to 8) and open-source control, and it is the better pick when price and model choice matter more than quality. Both are losing approval: the 90-day figures are 63% for Codex and 55% for OpenCode.
When developers explicitly said they prefer one or switched: 14 picked OpenAI Codex, 7 picked OpenCode.
Choose OpenAI Codex if
- You want the stronger code quality record (343 positive, 116 negative)
- You need default sandboxing and faster runs
- You want the larger evidence base and more explicit picks (14 vs 7)
Choose OpenCode if
- You want lower cost (113 positive, 24 negative)
- You value customization and open-source control (83 positive, 8 negative)
- You want to switch models freely and prefer its TUI
Where each one wins and loses
Why developers switched
Picked OpenAI Codex
Picked OpenCode
Summaries are paraphrased. Each links to the original comment.