OpenCode vs Claude Code: open source agent vs Anthropic's, and what each costs to run
OpenCode is an open source coding agent that connects to any model; Claude Code is Anthropic's. How they differ, what OpenCode Go and Claude's plans cost, and how to run both on one key.
OpenCode and Claude Code are both coding agents for the terminal. The difference is who decides the model: Claude Code is Anthropic's agent, while OpenCode describes itself as an open source agent that can "connect any model from any provider, including Claude, GPT, Gemini and more" (opencode.ai, as of November 4, 2026).
How you pay for each
| OpenCode | Claude Code | |
|---|---|---|
| The agent | Open source | Anthropic's |
| Its own plan | OpenCode Go: $10 a month, Go Plus $40, open-weight models plus Claude Haiku 5.5 and GPT 6 Luna | Claude Pro $20, Max $100, Ultra $200 a month |
| Limits on that plan | Five-hour, weekly and monthly windows | Five-hour and weekly windows (Ultra: weekly only, for verified accounts) |
| Your own key | Any provider | An API key via ANTHROPIC_BASE_URL |
Running both on one key
Both agents take an API key, so one Inferray key — on pay-as-you-go or a Token Plan — can run either, on any of these models:
| Model | Input / 1M | Cached / 1M | Output / 1M | Context | Token Plans |
|---|---|---|---|---|---|
| Claude Opus 5.5 | $4 | $0.2 | $20 | 1M | Included |
| Claude Sonnet 5.5 | $2 | $0.1 | $10 | 1M | Included |
| GPT-6.1 Sol | $2 | $0.1 | $10 | 1.1M | Included |
| Kimi K3 | $3 | $0.3 | $15 | 1.0M | Included |
| GLM-5.3 | $0.77 | $0.143 | $2.42 | 262K | Included |
| DeepSeek V4.1 Flash | $0.15 | $0.003 | $0.6 | 1M | Included |
Setup guides: opencode and Claude Code. A Token Plan's $20 buys $60 of usage a month, spent across both, with no windows.
Which to pick
- OpenCode if you want to choose your model per task and keep your agent open source. OpenCode Go is the lowest-priced plan if open-weight models are enough — see OpenCode Go vs a Token Plan.
- Claude Code if you work mostly with Claude and like Anthropic's agent.
- Either way, a key that covers every model saves you from picking the agent by the plan.
Prices on this page come from the model catalog and were current on November 12, 2026.