Google Code Wiki vs OpenCode: Side-by-Side Comparison 2026
Google Code Wiki vs OpenCode comparison 2026. Side-by-side features, pricing & capabilities.
Google Code Wiki is an AI assistant from Google — ai-powered living documentation for your codebase. OpenCode is a CLI-based coding agent from SST — open-source terminal ai coding agent.
Google Code Wiki
Gemini-powered platform that auto-generates and continuously maintains structured wiki documentation for code repositories. Scans your entire codebase after every commit, regenerates hyperlinked docs with architecture diagrams, and includes an AI chat agent grounded in the current state of your code.
- ✓ Auto-generated wiki from full codebase scan
- ✓ Continuous regeneration after every commit
- ✓ Architecture diagrams (auto-generated)
- ✓ Class and sequence diagrams
- ✓ Gemini chat agent per wiki page
Free · 1 plan
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 | Google Code Wiki | OpenCode |
|---|---|---|
| Category | Assistant | CLI |
| Starting Price | Free | Free |
| Model Family | Gemini | Multi-model (any) |
| Agentic Mode | — | ✓ |
| Multi-File Editing | — | ✓ |
| Terminal Commands | — | ✓ |
| Test Generation | — | ✓ |
| Debugging | — | ✓ |
| Refactoring | — | ✓ |
| Documentation | ✓ | — |
| Git Integration | ✓ | — |
| Open Source | No | Yes (MIT) |
Pricing verified Feb 14, 2026. Google Code Wiki pricing | OpenCode pricing
Key Differences
- Category: Google Code Wiki is an AI assistant; OpenCode is a CLI-based coding agent.
- Model family: Google Code Wiki uses Gemini; OpenCode uses Multi-model (any).
- Agentic mode: OpenCode supports agentic mode; Google Code Wiki does not.
- Open source: Google Code Wiki: No. OpenCode: Yes (MIT).
- Bring your own key: OpenCode supports BYOK; Google Code Wiki does not.
- Platforms: Google Code Wiki runs on Web; OpenCode runs on Linux, Windows, macOS.
- Provider: Google Code Wiki is built by Google; OpenCode is built by SST.
- Capabilities: OpenCode has multi-file editing; OpenCode has terminal commands; OpenCode has test generation; OpenCode has debugging.
Which Should You Choose?
Choose Google Code Wiki if you want auto-generated, always-current documentation that lets new team members understand large codebases on day one. Choose OpenCode if you want open-source terminal-based coding with model flexibility. Read our full reviews to see which fits your workflow.