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models: all opencode provider models show no reasoning #56043
Description
Summary
All opencode/* models in OpenCode Desktop model picker show no reasoning support, despite catalog data proving reasoning via reasoningEffort variants and compatibility.reasoningField.
Environment
- opencode version: 2.0.30
- OS: Darwin Franks-MacBook-Pro.local 27.0.0 Darwin Kernel Version 27.0.0 RELEASE_ARM64_T6031 arm64
- Terminal: iTerm.app (xterm-256color, truecolor)
- Shell: /bin/zsh
- Install/channel: latest (
/Users/fjp/.opencode/bin/opencode) - Active plugins:
/Users/fjp/.config/opencode/mtplx-session-headers.js
Reproduction
- Open OpenCode Desktop -> model picker (
/models) - Filter to
opencodeprovider (12 models, e.g. ll-alpha-free, muse-spark-1.3-contributor-free, cat-jam-free) - Observe reasoning badge/indicator missing for all
- Run
opencode api get /api/modeland inspectopencode/*entries
Expected Behavior
Models with reasoningEffort variants or compatibility.reasoningField: reasoning_content should show reasoning support.
Actual Behavior
All opencode/* show no reasoning. GET /api/model shows 0/43 models with legacy "reasoning":true, but for opencode provider: 7/12 have reasoningEffort variants, 11/12 have reasoningField. Example opencode/muse-spark-1.3-contributor-free has 5 variants (minimal/low/medium/high/xhigh) with reasoningEffort+reasoningSummary+include: reasoning.encrypted_content. tools.opencode.models also strips compatibility/capabilities, returning only id/name/released/variants/cost/status.
Additional Context
Consistently reproducible. Example: opencode/ll-alpha-free variants=[low,medium,high,xhigh,max] + compat={reasoningField: reasoning_content}. Workaround: ignore badge, select e.g. opencode/muse-spark-1.3-contributor-free#medium - reasoning still runs.
Activity
opencode-agent commentedon Oct 16, 2026
Thanks for the detailed report and the
/api/modeldata! I think this is a duplicate of #50257. The Desktop model picker shows "No reasoning" for every v2 model, not onlyopencode/*ones. The reasoning flag from the model catalog never reaches the app's model capabilities, and the app's model mapper always setsreasoning: false. As you found, it only affects the label: reasoning variants still work.Possible duplicates and related issues, ordered from most to least likely:
capabilities.reasoningis never set). It is the main issue tracking this bug.opencode/*models, also marked as a duplicate of desktop: model picker shows "No reasoning" for all V2 models — capabilities.reasoning is never set #50257.The bot will close this issue as a duplicate in 1 day unless you reply explaining how your problem is different. You can follow progress on #50257.
opencode-agent commentedon Oct 17, 2026
We haven't heard back, so I'm closing this as a duplicate of #50257. It's the same bug: the Desktop model picker shows "No reasoning" for every v2 model, including the
opencode/*ones. The reasoning flag never reaches the app's model capabilities, and the app's model mapper always setsreasoning: false. A fix is in review in #55100. You can follow progress on #50257, and if your problem turns out to be different, reply here and we'll take another look.