Quick Verdict
Claude Code leads on SWE-bench (88.6% vs 72.8%)
Pricing
| Claude Code | OpenAI Codex | |
|---|---|---|
| Price | $20-200/mo | $20-200/mo |
| Open source | No ❌ | Yes ✅ |
| Best for | Deep reasoning, complex refactors | Parallel task execution |
Performance & Benchmarks
Claude Code scores 88.6% and OpenAI Codex scores 72.8% on SWE-bench. Here’s what that actually means for daily use.
Claude Code is built for deep reasoning, complex refactors. It’s a commercial product with $20-200/mo pricing. SWE-bench: 88.6%
OpenAI Codex is built for parallel task execution. It’s open source with $20-200/mo pricing. SWE-bench: 72.8%
Feature Comparison
| Feature | Claude Code | OpenAI Codex |
|---|
Pros & Cons
Claude Code
Pros:
- Highest SWE-bench in its class
- Deep reasoning on complex tasks
- Subagent and agent teams
Cons:
- Claude models only
- Expensive at scale
OpenAI Codex
Pros:
- Parallel Git worktree execution
- Cloud sandboxed agents
- Included in ChatGPT Plus
Cons:
- OpenAI models only
- Cloud-dependent for parallel mode
Verdict
Claude Code leads on SWE-bench (88.6% vs 72.8%)
Claude Code is recommended for: Complex multi-file refactors and architectural changes 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.