DeepSeek V4.1 Flash brings rapid code generation and solid reasoning to your development workflow, and you can integrate it directly into OpenCode without paying for API credits. Using Token Harbor's routing service, the full setup takes under five minutes.
Step 1: Install OpenCode
If you haven't already installed the client, download and set up the desktop environment from OpenCode. Launch the editor once the installation finishes.
Step 2: Generate a Token Harbor API Key
- Visit Token Harbor and sign in with your GitHub or Google account.
- Navigate to the API management section in your dashboard.
- Generate a new API key and copy it securely to your clipboard.
Step 3: Connect the Model in OpenCode
- Open OpenCode and go to Settings → Providers → Custom Model.
- Enter the Base URL:
https://tokenharbor.ai/v1. - Paste the key you generated into the API Key field.
- Specify DeepSeek V4.1 Flash as your target model.
- Save your changes to complete the setup.
Once saved, OpenCode will route code completions, inline edits, and terminal troubleshooting directly through DeepSeek V4.1 Flash. Because this free access tier is hosted as a limited-time promotion, configure your key early to take advantage of the allocation before the free window closes or endpoints become constrained.
Video recored by @exploraX_