Catalog variants are not package-aware: overriding a provider's package breaks built-in variants #55226

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1. opencode-agent commented on Oct 13, 2026

   

   opencode-agentBot

   on Oct 13, 2026 – with OpenCode Agent

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   Thanks for the clear report. I reproduced this on 2.0.28, and it still happens on the latest dev (1163e6cd).

   What I did:

   • Pointed the zai provider at "package": "@opencode/ai/providers/anthropic", with settings.baseURL set to a local mock server. I didn't add any model entries, so glm-5.3 and its variants come from the bundled catalog.
   • opencode run -m 'zai/glm-5.3#low' hello fails before any request goes out, with the error you reported: Missing key at ["thinking"]["budgetTokens"] … Expected "disabled" | "between_tools" at ["thinking"]["type"].
   • Without a variant, Anthropic-format requests do reach the endpoint. So the package override works, and only the catalog variants (in zai's thinking format) are wrong for the new package.

   The script below reproduces it. Your workaround (defining your own variants with budgetTokens) should still work for now. A related report with a similar mismatch: #53756 (Bedrock inference-profile ARNs getting the wrong effort variants).

   Reproduction script (repro.sh)

   #!/usr/bin/env bash
   # Reproduces #55226: catalog zai variants applied after overriding provider package to Anthropic.
   # Usage: ./repro.sh            (uses `opencode` from PATH)
   #        OC_DEV=/path/to/repo ./repro.sh   (runs from source)
   set -u
   DIR=$(mktemp -d); cd "$DIR"
   export OPENCODE_PASSWORD=repro-pass
   export XDG_CONFIG_HOME="$DIR/cfg" XDG_DATA_HOME="$DIR/data" XDG_STATE_HOME="$DIR/state" XDG_CACHE_HOME="$DIR/cache"
   mkdir -p proj
   # mock server just logs what reaches it
   bun -e 'Bun.serve({port:4555,async fetch(r){console.error("MOCK GOT",new URL(r.url).pathname,(await r.text()).slice(0,1500));return new Response(JSON.stringify({error:{type:"invalid_request_error",message:"mock"}}),{status:400,headers:{"content-type":"application/json"}})}})' & MOCK=$!
   sleep 1
   cat > proj/opencode.json <<'JSON'
   {
     "providers": {
       "zai": {
         "package": "@opencode/ai/providers/anthropic",
         "settings": { "baseURL": "http://127.0.0.1:4555/v1", "apiKey": "test-key" }
       }
     }
   }
   JSON
   cd proj
   if [ -n "${OC_DEV:-}" ]; then
     OC=(bun --conditions=browser --preload="$OC_DEV/packages/tui/node_modules/@opentui/solid/scripts/preload.js" "$OC_DEV/packages/cli/src/index.ts")
   else OC=(opencode); fi
   "${OC[@]}" --version
   MODE=(--standalone)
   if [ -n "${OC_DEV:-}" ]; then
     # from source, the spawned standalone server misses the preload, so run the server ourselves
     "${OC[@]}" serve --port 4600 >"$DIR/serve.log" 2>&1 & SRV=$!
     for i in $(seq 60); do curl -s -o /dev/null http://127.0.0.1:4600 && break; sleep 1; done
     MODE=(--server http://127.0.0.1:4600)
   fi
   echo "=== variant low ==="
   timeout 90 "${OC[@]}" run "${MODE[@]}" -m 'zai/glm-5.3#low' "hello" 2>&1 | tail -20
   echo "=== no variant (control) ==="
   timeout 90 "${OC[@]}" run "${MODE[@]}" -m 'zai/glm-5.3' "hello" 2>&1 | tail -20
   kill $MOCK ${SRV:-}

   Run it: bash repro.sh
2. opencode-agent

   added

   reproduced

   on Oct 13, 2026
3. rekram1-node

   self-assigned this

   on Oct 19, 2026