Gemini CLI vs OpenCode: Side-by-Side Comparison 2026
Gemini CLI vs OpenCode comparison 2026. Side-by-side features, pricing & capabilities.
Gemini CLI is a CLI-based coding agent from Google — open-source ai agent for your terminal. OpenCode is a CLI-based coding agent from SST — open-source terminal ai coding agent.
Gemini CLI
Open-source AI agent that runs in your terminal. Uses a ReAct loop with built-in tools for file operations, shell commands, web search, and MCP server support. Free with generous daily limits.
- ✓ ReAct agentic loop
- ✓ File operations and shell commands
- ✓ Web search grounding
- ✓ MCP server support
- ✓ 1M token context window
Free / $19.99/mo · 4 plans
OpenCode
Open-source terminal AI coding agent from SST. Free with BYOK, or use OpenCode Zen (pay-per-token) and Black (flat-rate subscription at $20/$100/$200/mo) for managed model access.
- ✓ AI chat
- ✓ Agentic mode
- ✓ Multi-file editing
- ✓ Terminal commands
- ✓ Test generation
Free · 2 plans
| Feature | Gemini CLI | OpenCode |
|---|---|---|
| Category | CLI | CLI |
| Starting Price | Free | Free |
| Model Family | Gemini | Multi-model (any) |
| Git Integration | ✓ | — |
| Open Source | Yes (Apache 2.0) | Yes (MIT) |
Pricing verified Mar 20, 2026. Gemini CLI pricing | OpenCode pricing
Key Differences
- Starting price: Gemini CLI starts at $19.99/mo; OpenCode starts at free / BYOK.
- Model family: Gemini CLI uses Gemini; OpenCode uses Multi-model (any).
- Open source: Gemini CLI: Yes (Apache 2.0). OpenCode: Yes (MIT).
- Provider: Gemini CLI is built by Google; OpenCode is built by SST.
Which Should You Choose?
Choose Gemini CLI if you want AI pair programming directly in your terminal. Choose OpenCode if you want open-source terminal-based coding with model flexibility. Read our full reviews to see which fits your workflow.