Quick Verdict
Neither agent has public SWE-bench scores — real-world testing is your best bet.
Pricing
| Codebuff | GitHub Copilot CLI | |
|---|---|---|
| Price | Free (BYO keys) | $10-39/mo (Copilot subscription) |
| Open source | Yes ✅ | No ❌ |
| Best for | Terminal-based code generation | GitHub-native terminal agent with PR/issue integration |
Performance & Benchmarks
Benchmarks help, but without SWE-bench data for these two, we focus on real-world capability instead.
Codebuff is built for terminal-based code generation. It’s open source with Free (BYO keys) pricing.
GitHub Copilot CLI is built for github-native terminal agent with pr/issue integration. It’s a commercial product with $10-39/mo (Copilot subscription) pricing.
Feature Comparison
| Feature | Codebuff | GitHub Copilot CLI |
|---|
Pros & Cons
Codebuff
Pros:
- Terminal-native code generation
- Multi-model support
- Open source
Cons:
- Smaller community (7K stars)
- No vision
GitHub Copilot CLI
Pros:
- Deep GitHub integration
- Multi-model (Claude Sonnet 4.5, GPT-5)
- MCP server built-in
Cons:
- Requires Copilot subscription
- GitHub ecosystem dependent
Verdict
Neither agent has public SWE-bench scores — real-world testing is your best bet.
Codebuff is recommended for: Quick terminal-based code generation tasks GitHub Copilot CLI is recommended for: Developers in GitHub ecosystem wanting terminal agent
For a full overview of all 15 agents, see the Complete Guide to AI Coding Agents.