kitio.aiOpenCode vs Theia IDE
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. Theia IDE is completely free, while OpenCode is freemium.
At a glance
Best for
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- Terminal UI
- LSP-aware context
- 75+ model providers
- Custom agents
- Desktop client
- Built-in AI assistance
- Any model, including local
- VS Code extension support
- Desktop and browser versions
- No telemetry on code
| Feature | OpenCode | Theia IDE |
|---|---|---|
| Best for | Open-source, model-agnostic coding agent for the terminal | Open-source AI-native IDE for desktop and browser |
| Category | Coding | Coding |
| Pricing model | Freemium | Free |
| Starting price | $10/mo | Free |
| Free plan | Yes | Yes, fully free |
| Made by | Anomaly Innovations | Eclipse Foundation |
| Based in | United States | – |
| Rating | No ratings yet | No ratings yet |
| Key features |
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Pricing compared
Theia IDE is completely free, while OpenCode is freemium.
Free plan
Cheapest paid plan
Top plan
Free trial
3 plans
Open source
Free
- Free coding agent
- Bring your own model keys
Go
$10/mo
- Subscription access to coding models
Zen
Pay-as-you-go
- Curated models billed per token
Prices in USD, checked Oct 28, 2026 or later. Plans change often, so confirm on each tool's site before you buy.
Pros and cons
OpenCode
- Free and open source
- Uses plans you already pay for
- Fast, well-designed TUI
- You choose and tune models yourself
- Some providers limit third-party access
Theia IDE
- Free and fully open source
- Use any AI provider or local model
- Runs VS Code extensions
- You pay your own model provider
- Smaller community than VS Code
- Some extensions may not behave identically
Which one should you choose?
Choose OpenCode if you want:
- Free and open source
- Uses plans you already pay for
- Fast, well-designed TUI
Watch out: you choose and tune models yourself.
Choose Theia IDE if you want:
- Free and fully open source
- Use any AI provider or local model
- Runs VS Code extensions
Watch out: you pay your own model provider.
OpenCode vs Theia IDE FAQ
What is the difference between OpenCode and Theia IDE?
OpenCode: Open-source, model-agnostic coding agent for the terminal. Theia IDE: Open-source AI-native IDE for desktop and browser. Both are coding tools.
Is OpenCode or Theia IDE cheaper?
Theia IDE is completely free, while OpenCode is freemium.
Do OpenCode and Theia IDE have free plans?
OpenCode: Yes. Theia IDE: Yes, fully free.
Who makes OpenCode?
OpenCode is made by Anomaly Innovations, based in United States.
Who makes Theia IDE?
Theia IDE is made by Eclipse Foundation.
Which should I choose, OpenCode or Theia IDE?
Choose OpenCode if you value free and open source and uses plans you already pay for. Choose Theia IDE if you value free and fully open source and use any ai provider or local model.