AI_APICallError: Not Found when using Deepseek model via OpenRouter

[RajaRakoto]

Hi, I'm encountering an issue using OpenRouter with the Deepseek (free) model in Opencode.

What I’ve done:

• Successfully authenticated via opencode auth login using my OpenRouter API key.
• My opencode.json is configured like this:

{
  "$schema": "https://opencode.ai/config.json",
  "model": "openrouter/deepseek/deepseek-r1-0528:free",
  "disabled_providers": ["anthropic", "mistral", "openai", "xai"],
  "provider": {
    "openrouter": {
      "npm": "@openrouter/ai-sdk-provider",
      "name": "OpenRouter",
      "options": {},
      "models": {
        "deepseek/deepseek-r1-0528:free": {
          "name": "Deepseek R1 0528 (free)"
        },
        "deepseek/deepseek-chat-v3-0324:free": {
          "name": "Deepseek Chat V3 0324 (free)"
        }
      }
    }
  }
}

• When running opencode models, the Deepseek models are listed correctly.
• I’ve set "openrouter/deepseek/deepseek-r1-0528:free" as my default model.

Problem:

When I send a prompt, I get the following error:

AI_APICallError: Not Found

It seems like the model is recognized but not actually callable. Any guidance on resolving this?
Thanks in advance!

@RajaRakoto The issue is with the model name in your config. You don’t need to prefix it with openrouter/. Just update your opencode.json like this:

{
  "$schema": "https://opencode.ai/config.json",
  "model": "deepseek/deepseek-r1-0528:free",
  "disabled_providers": ["anthropic", "mistral", "openai", "xai"],
  "provider": {
    "openrouter": {
      "npm": "@openrouter/ai-sdk-provider",
      "name": "OpenRouter",
      "options": {},
      "models": {
        "deepseek/deepseek-r1-0528:free": {
          "name": "Deepseek R1 0528 (free)"
        },
        "deepseek/deepseek-chat-v3-0324:free": {
          "name": "Deepseek Chat V3 0324 (free)"
        }
      }
    }
  }
}

That should fix the AI_APICallError: Not Found error.

[thdxr]

i tried this config and it worked

  "provider": {
    "openrouter": {
      "npm": "@openrouter/ai-sdk-provider",
      "name": "OpenRouter",
      "options": {},
      "models": {
        "deepseek/deepseek-r1-0528:free": {
          "name": "Deepseek R1 0528 (free)"
        },
        "deepseek/deepseek-chat-v3-0324:free": {
          "name": "Deepseek Chat V3 0324 (free)"
        }
      }
    }
  },

[RajaRakoto]

@thdxr @pschoudhary-dot
Thanks a lot for your help, it works now! 😊