muse-spark-1.2-contributor-free returns HTTP 500 Internal server error #45584

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1. github-actions commented on Aug 27, 2026

   

   github-actionsBot

   on Aug 27, 2026 – with GitHub Actions

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   This issue might be a duplicate of existing issues. Please check:

   • OpenCode Zen muse-spark-1.2-contributor-free suddenly returns HTTP 500 with OpenAI-compatible provider #44847: OpenCode Zen muse-spark-1.2-contributor-free suddenly returns HTTP 500 with OpenAI-compatible provider
   • Zen: muse-spark-1.2-contributor-free requires /responses not /chat/completions (500) and has text->tool chain stall #44659: Zen: muse-spark-1.2-contributor-free requires /responses not /chat/completions (500) and has text->tool chain stall
   • Problem with Muse Spark 1.2 Free #43913: Problem with Muse Spark 1.2 Free
   • Intermittent "Upstream request failed: Endpoint is unavailable." on free models (x-preview-f-free, muse-spark-1.2-contributor-free) #45076: Intermittent upstream failures on free models including muse-spark-1.2-contributor-free
2. Tarquinen commented on Oct 20, 2026

   

   Tarquinen

   on Oct 20, 2026

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   Thanks for the report! The free Muse models (muse-spark-1.2-contributor-free and muse-spark-1.3-contributor-free) have been removed from the free tier, so this no longer applies. Closing this issue.

   — from 𝕺𝖕𝖊𝖓𝕮𝖔𝖉𝖊
3. Tarquinen

   closed this as not plannedon Oct 20, 2026