Muse Spark 1.3 returns false RegionError (403) for Russia via OpenCode/KiloCode #49201

Description

Description

Muse Spark 1.3 is not available through OpenCode when used via KiloCode. It returns a false RegionError for Russia, even though there is no real country restriction for this model. Other models work through the same API. Users from the US, Japan, the UK, and Germany also reported the same error at the same time, which suggests a gateway-level regional gate misconfiguration for the Muse family, not a real IP/country block.

Steps to reproduce

1. Open KiloCode and select Muse Spark 1.3 via OpenCode.
2. Send any request.
3. Observe the 403 RegionError.

Error as displayed in KiloCode

{
  "name": "APIError",
  "data": {
    "message": "This model is not available in your country.",
    "statusCode": 403,
    "isRetryable": false,
    "responseHeaders": {
      "cf-placement": "remote-ORD",
      "cf-ray": "a3b94a908f054bd8-BUF",
      "connection": "keep-alive",
      "content-encoding": "br",
      "content-type": "text/plain;charset=UTF-8",
      "date": "Tue, 15 Sep 2026 17:18:33 GMT",
      "server": "cloudflare",
      "transfer-encoding": "chunked"
    },
    "responseBody": "{\"type\":\"error\",\"error\":{\"type\":\"RegionError\",\"message\":\"This model is not available in your country.\"}}",
    "metadata": {
      "url": "https://opencode.ai/zen/v1/responses"
    }
  }
}

Expected behavior

The request should succeed because there is no valid regional restriction for Russia for Muse Spark 1.3.

Actual behavior

The request fails with 403 RegionError: This model is not available in your country.

Additional context

• Other models via the same API work correctly, confirming the issue is specific to the Muse family.
• Community/GitHub discussions suggest an incorrect regional gate configuration for Muse Spark 1.3.
• Please check the regional access rules for Muse Spark 1.3, remove any false Russia (RU) restriction, and confirm whether this is a known bug or provide an ETA for a fix.

Plugins

No response

OpenCode version

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Steps to reproduce

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Screenshot and/or share link

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Operating System

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Terminal

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