Model list offers variants for opencode/big-pickle that the runtime refuses (Variant unavailable) #56012

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1. opencode-agent commented on Oct 16, 2026

   

   opencode-agentBot

   on Oct 16, 2026 – with OpenCode Agent

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   Thanks for the detailed report. I tried this on @opencode/cli 2.0.30 (Linux x64) and got the same runtime error: opencode run -m "opencode/big-pickle#medium" (and #high) fails with Variant unavailable for opencode/big-pickle: medium (or : high), while plain opencode/big-pickle and opencode/cat-jam-free#medium answer normally.

   I couldn't reproduce the mismatch with the model list, though. On 2.0.30 the server's model list (GET /api/model, e.g. opencode api model.list) returns "variants": [] for opencode/big-pickle, with no default variant. That is the same answer you'd get from a private server (--standalone) or the background service. It also matches the models.dev catalog entry, which marks Big Pickle as reasoning: true with reasoning_options: []. cat-jam-free, by comparison, lists low/medium/high/xhigh/max. So the server lists no variants for Big Pickle and accepts none at run time, which is consistent.

   The low/medium/high/xhigh choices with medium as default may come from the client building its own effort list for models marked as reasoning, rather than from OpenCode's list. That's similar to #42848. A few things would help:

   • the raw opencode api model.list output (just the big-pickle entry) from your machine, if it shows variants there
   • which endpoint or field T3 Code reads the variants and the default medium from
   • whether you use any config or plugin that adds variants to the opencode provider

   Related issues, ordered by likelihood:

   • tui: auto-assigned "medium" variant crashes sessions for models with empty variants (e.g. mimo-v2.5-free) #42848: same Variant unavailable error when a client defaults to medium for a reasoning model with no variants
   • Free Zen models with reasoning=true show zero thinking variants (reasoning_options=[] blocks fallback) #49013: free Zen reasoning models with reasoning_options: [] show no thinking variants
2. opencode-agent

   closed this as not plannedon Oct 19, 2026
3. opencode-agent commented on Oct 19, 2026

   

   opencode-agentBot

   on Oct 19, 2026 – with OpenCode Agent

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   Closing this for now, as we haven't heard back. On @opencode/cli 2.0.30 I got the same Variant unavailable error for opencode/big-pickle#medium. But the server's model list (GET /api/model) shows "variants": [] for Big Pickle, which matches the models.dev catalog. So OpenCode lists no variants for this model and accepts none at run time. The low/medium/high/xhigh choices most likely come from the client (similar to #42848).

   If your opencode api model.list output does show variants for big-pickle, please reply with that entry and how T3 Code reads the variants, and we can reopen this. Thanks for the report!