Quick Verdict
OpenCode leads on SWE-bench (88.0% vs 72.8%)
Pricing
| OpenCode | OpenAI Codex | |
|---|---|---|
| Price | Free (BYO keys) | $20-200/mo |
| Open source | Yes ✅ | Yes ✅ |
| Best for | Provider-neutral terminal use | Parallel task execution |
Performance & Benchmarks
OpenCode scores 88.0% and OpenAI Codex scores 72.8% on SWE-bench. Here’s what that actually means for daily use.
OpenCode is built for provider-neutral terminal use. It’s open source with Free (BYO keys) pricing. SWE-bench: 88.0%
OpenAI Codex is built for parallel task execution. It’s open source with $20-200/mo pricing. SWE-bench: 72.8%
Feature Comparison
| Feature | OpenCode | OpenAI Codex |
|---|
Pros & Cons
OpenCode
Pros:
- Multi-provider support
- Free and open source
- Skill-driven execution
Cons:
- Archived / no active development
- No vision support
OpenAI Codex
Pros:
- Parallel Git worktree execution
- Cloud sandboxed agents
- Included in ChatGPT Plus
Cons:
- OpenAI models only
- Cloud-dependent for parallel mode
Verdict
OpenCode leads on SWE-bench (88.0% vs 72.8%)
OpenCode is recommended for: Open-source alternative with flexible provider choice OpenAI Codex is recommended for: Parallel ticket processing and batch tasks
For a full overview of all 15 agents, see the Complete Guide to AI Coding Agents.