6 replies

OpenCode Zen + GPT 5.4

I am trying to use GPT 5.4 through OpenCode Zen and running into issues. I've setup my custom provider in the config like this:

  "models": {
    "mode": "merge",
    "providers": {
      "custom-opencode": {
        "baseUrl": "https://opencode.ai/zen",
        "apiKey": "sk-censored",
        "api": "openai-completions",
        "models": [
          {
            "id": "gpt-5.4",
            "name": "gpt-5.4 (Custom Provider)",
            "reasoning": true,
            "input": [
              "text",
              "image"
            ],
            "cost": {
              "input": 2.5,
              "output": 15.00,
              "cacheRead": 0.25,
              "cacheWrite": 0
            },
            "contextWindow": 272000,
            "maxTokens": 128000
          }
        ]
      }
    }
  },

  "models": {
    "mode": "merge",
    "providers": {
      "custom-opencode": {
        "baseUrl": "https://opencode.ai/zen",
        "apiKey": "sk-censored",
        "api": "openai-completions",
        "models": [
          {
            "id": "gpt-5.4",
            "name": "gpt-5.4 (Custom Provider)",
            "reasoning": true,
            "input": [
              "text",
              "image"
            ],
            "cost": {
              "input": 2.5,
              "output": 15.00,
              "cacheRead": 0.25,
              "cacheWrite": 0
            },
            "contextWindow": 272000,
            "maxTokens": 128000
          }
        ]
      }
    }
  },

but it doesn't actually work - when I send a message I just see this in the logs:

03:38:05 warn errors {"subsystem":"errors"} Long error truncated: 404 <!DOCTYPE html><html lang="en" dir="ltr" data-locale="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1"><meta property="og:image" content="/social

03:38:05 warn errors {"subsystem":"errors"} Long error truncated: 404 <!DOCTYPE html><html lang="en" dir="ltr" data-locale="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1"><meta property="og:image" content="/social

I have done something similar in the past to use 4.6 Sonnet and it worked fine.

OpenCode Zen + GPT 5.4

I am trying to use GPT 5.4 through OpenCode Zen and running into issues. I've setup my custom provider in the config like this:

  "models": {
    "mode": "merge",
    "providers": {
      "custom-opencode": {
        "baseUrl": "https://opencode.ai/zen",
        "apiKey": "sk-censored",
        "api": "openai-completions",
        "models": [
          {
            "id": "gpt-5.4",
            "name": "gpt-5.4 (Custom Provider)",
            "reasoning": true,
            "input": [
              "text",
              "image"
            ],
            "cost": {
              "input": 2.5,
              "output": 15.00,
              "cacheRead": 0.25,
              "cacheWrite": 0
            },
            "contextWindow": 272000,
            "maxTokens": 128000
          }
        ]
      }
    }
  },

  "models": {
    "mode": "merge",
    "providers": {
      "custom-opencode": {
        "baseUrl": "https://opencode.ai/zen",
        "apiKey": "sk-censored",
        "api": "openai-completions",
        "models": [
          {
            "id": "gpt-5.4",
            "name": "gpt-5.4 (Custom Provider)",
            "reasoning": true,
            "input": [
              "text",
              "image"
            ],
            "cost": {
              "input": 2.5,
              "output": 15.00,
              "cacheRead": 0.25,
              "cacheWrite": 0
            },
            "contextWindow": 272000,
            "maxTokens": 128000
          }
        ]
      }
    }
  },

but it doesn't actually work - when I send a message I just see this in the logs:

03:38:05 warn errors {"subsystem":"errors"} Long error truncated: 404 <!DOCTYPE html><html lang="en" dir="ltr" data-locale="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1"><meta property="og:image" content="/social

03:38:05 warn errors {"subsystem":"errors"} Long error truncated: 404 <!DOCTYPE html><html lang="en" dir="ltr" data-locale="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1"><meta property="og:image" content="/social

I have done something similar in the past to use 4.6 Sonnet and it worked fine.

OpenCode Zen + GPT 5.4

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