Codex vs OpenCode
Using only the use cases on agentsetups: 69 name Codex, 9 name OpenCode, and 4 name both. Codex’s biggest category here is Coding (14); OpenCode’s is Agent setup & config (5).
This compares what people used each agent for in the sources we list, not which is better. Counts reflect what gets posted, not market share.
Use cases by category
| Category | Codex | OpenCode |
|---|---|---|
| Agent setup & config | 13 | 5 |
| Coding | 14 | 3 |
| Knowledge & memory | 3 | 1 |
| Games | 6 | 0 |
| Content & video | 6 | 0 |
| Productivity & ops | 3 | 0 |
| Research & science | 3 | 0 |
| Design & frontend | 3 | 0 |
| Hardware & IoT | 3 | 0 |
| Personal assistants | 2 | 0 |
| Finance & trading | 2 | 0 |
| Personal life | 2 | 0 |
| Automation & integrations | 2 | 0 |
| Security | 2 | 0 |
| Marketing & growth | 1 | 0 |
| DevOps | 1 | 0 |
| Sales & outreach | 1 | 0 |
| Education | 1 | 0 |
| Travel | 1 | 0 |
Used together 4
- Plan with Claude Code, execute with Codex via MCP
Claude Code plans and reviews, Codex executes through the Codex MCP, and notes and skills live in Obsidian.
- Share work memory across Claude Code, Codex and Pi
Nimrod reads each agent’s local session files into one SQLite log, injects a project brief at session start and answers queries over MCP.
- Run OpenCode on DeepSeek or GLM models
OpenCode on DeepSeek V4.1 Flash or GLM-5.3 instead of a native seat
- Let a laptop control coding agents that run on a home PC
Long jobs keep running on the PC after the laptop is closed; you verify and merge next morning (self-reported).
Different use cases
Only Codex 65
- Find an exoplanet candidate in NASA TESS data · Research & science
- Have your agent plan and book a whole trip · Travel
- Produce 5-minute AI video ads from a Codex pipeline · Content & video
- Decompile a full game with a long-running agent swarm · Games
- Replace a pro app subscription with your own build · Coding
- Build paid web apps with an Opus front end and Codex · Coding
- Have Codex build a drop-in renderer to fix perf · Coding
- Give one prompt and 6 hours for a 3D visualisation · Design & frontend
Only OpenCode 5
- Expensive models think, cheap models implement · Agent setup & config
- Run OpenCode with local Ollama models in a sandbox · Agent setup & config
- Ramble into a daily note, let OpenCode make sense of it · Knowledge & memory
- Move your default coding agent to OpenCode via OpenRouter · Agent setup & config
- Ticket in, PR out: four skills and a reviewer in CI · Coding