Gemini Code Assist vs OpenCode: Side-by-Side Comparison 2026
Gemini Code Assist vs OpenCode comparison for 2026. Features, pricing, AI capabilities, and editor support analyzed side by side to help you choose the right coding tool for your workflow.
Gemini Code Assist is an editor extension from Google — google's ai coding assistant. OpenCode is a CLI-based coding agent from SST — open-source terminal ai coding agent.
Gemini Code Assist
Google's AI-powered coding assistant built on Gemini. Provides code completions, chat, code transformations, and full codebase awareness in VS Code and JetBrains IDEs.
- ✓ Code completions
- ✓ AI chat
- ✓ Code transformations
- ✓ Codebase awareness
- ✓ Pull request summaries
Free / $19/mo · 6 plans
OpenCode
Open-source terminal AI coding agent from SST. Free with BYOK, or use Go ($10/mo for curated open-source models), Zen (pay-per-token), or Black (flat-rate subscription at $20/$100/$200/mo, currently paused) for managed model access.
- ✓ AI chat
- ✓ Agentic mode
- ✓ Multi-file editing
- ✓ Terminal commands
- ✓ Test generation
Free / $10/mo · 4 plans
| Feature | Gemini Code Assist | OpenCode |
|---|---|---|
| Category | Extension | CLI |
| Starting Price | Free | Free |
| Model Family | Gemini | Multi-model (any) |
| Agentic Mode | — | ✓ |
| Multi-File Editing | — | ✓ |
| Terminal Commands | — | ✓ |
| Documentation | ✓ | — |
| Git Integration | ✓ | — |
| Open Source | No | Yes (MIT) |
Pricing verified May 4, 2026. Gemini Code Assist pricing | OpenCode pricing
Key Differences
- Category: Gemini Code Assist is an editor extension; OpenCode is a CLI-based coding agent.
- Starting price: Gemini Code Assist starts at $19/mo; OpenCode starts at $10/mo.
- Model family: Gemini Code Assist uses Gemini; OpenCode uses Multi-model (any).
- Agentic mode: OpenCode supports agentic mode; Gemini Code Assist does not.
- Open source: Gemini Code Assist: No. OpenCode: Yes (MIT).
- Bring your own key: OpenCode supports BYOK; Gemini Code Assist does not.
- Platforms: Gemini Code Assist runs on Desktop, Web; OpenCode runs on Linux, Windows, macOS.
- Provider: Gemini Code Assist is built by Google; OpenCode is built by SST.
- Capabilities: OpenCode has multi-file editing; OpenCode has terminal commands.
Which Should You Choose?
Choose Gemini Code Assist if you want deep integration with Google Cloud services and infrastructure. Choose OpenCode if you want open-source terminal-based coding with model flexibility. Read our full reviews to see which fits your workflow.