It suits developers who want to swap models without swapping tools, and people who want strong open-weight coding models at a fixed price. The catch is that the low price buys mostly open-weight models and a few smaller proprietary ones: Go's model list has no Claude Sonnet, Opus or GPT-6.1 Sol, and limits are counted in dollars, so on Go OpenCode estimates about 147 requests per 5 hours for Kimi K3.1 Pro against about 43,000 for DeepSeek V4.1 Flash.
The app costs nothing. OpenCode sells two ways to pay for the models it hosts: a monthly Go subscription that sets a dollar limit per model, and a prepaid pay-as-you-go balance for the rest of its catalog. Models reached through your own keys or logins are billed by their provider.