feat(provider): add small model priorities

packages/opencode/src/provider/provider.ts

@@ -28,6 +28,7 @@ import { withStatics } from "@/util/schema"
 
 import * as ProviderTransform from "./transform"
 import { ModelID, ProviderID } from "./schema"
+import { ProviderSmallModel } from "./small-model"
 
 const log = Log.create({ service: "provider" })
 
@@ -1611,22 +1612,10 @@ const layer: Layer.Layer<
       const provider = s.providers[providerID]
       if (!provider) return undefined
 
-      let priority = [
-        "claude-haiku-4-5",
-        "claude-haiku-4.5",
-        "3-5-haiku",
-        "3.5-haiku",
-        "gemini-3-flash",
-        "gemini-2.5-flash",
-        "gpt-5-nano",
-      ]
-      if (providerID.startsWith("opencode")) {
-        priority = ["gpt-5-nano"]
-      }
-      if (providerID.startsWith("github-copilot")) {
-        priority = ["gpt-5-mini", "claude-haiku-4.5", ...priority]
-      }
+      const priority = ProviderSmallModel.priority[providerID] ?? []
       for (const item of priority) {
+        if (provider.models[item]) return yield* getModel(providerID, ModelID.make(item))
+
         if (providerID === ProviderID.amazonBedrock) {
           const crossRegionPrefixes = ["global.", "us.", "eu."]
           const candidates = Object.keys(provider.models).filter((m) => m.includes(item))

packages/opencode/src/provider/small-model.ts

@@ -0,0 +1,73 @@
+export * as ProviderSmallModel from "./small-model"
+
+export const priority: Record<string, string[]> = {
+  opencode: [
+    "gpt-5.4-mini",
+    "gemini-3-flash",
+    "claude-haiku-4-5",
+  ],
+  "opencode-go": ["minimax-m2.7", "minimax-m2.5"],
+  openai: [
+    "gpt-5.4-mini",
+    "gpt-5.4-nano",
+    "gpt-5.1-codex-mini",
+    "gpt-5-mini",
+    "gpt-5-nano",
+    "gpt-4.1-nano",
+    "gpt-4o-mini",
+  ],
+  anthropic: ["claude-haiku-4-5", "claude-3-5-haiku", "claude-3-haiku"],
+  google: [
+    "gemini-3.1-flash-lite-preview",
+    "gemini-flash-lite-latest",
+    "gemini-3-flash-preview",
+    "gemini-2.5-flash",
+    "gemini-2.5-flash-lite",
+    "gemini-2.0-flash-lite",
+  ],
+  "google-vertex": [
+    "gemini-3.1-flash-lite-preview",
+    "gemini-flash-lite-latest",
+    "gemini-3-flash-preview",
+    "gemini-2.5-flash",
+    "gemini-2.5-flash-lite",
+    "gemini-2.0-flash-lite",
+  ],
+  "github-copilot": [
+    "gpt-5.4-mini",
+    "gemini-3-flash-preview",
+    "claude-haiku-4.5",
+  ],
+  xai: [
+    "grok-4.20-0309-non-reasoning",
+    "grok-4-1-fast-non-reasoning",
+    "grok-4-fast-non-reasoning",
+    "grok-code-fast-1",
+    "grok-3-mini-fast-latest",
+    "grok-3-mini-fast",
+    "grok-3-mini-latest",
+    "grok-3-mini",
+  ],
+  "amazon-bedrock": [
+    "anthropic.claude-haiku-4-5",
+    "openai.gpt-oss-20b",
+    "mistral.ministral-3-8b",
+    "mistral.ministral-3-3b",
+    "amazon.nova-2-lite",
+    "amazon.nova-lite",
+    "mistral.voxtral-mini-3b",
+    "meta.llama3-1-8b",
+  ],
+  openrouter: [
+    "openai/gpt-5.4-mini",
+    "openai/gpt-5.4-nano",
+    "google/gemini-3.1-flash-lite-preview",
+    "anthropic/claude-haiku-4.5",
+    "x-ai/grok-4.20-beta",
+    "x-ai/grok-4-fast",
+    "mistralai/mistral-small-2603",
+    "openai/gpt-5.1-codex-mini",
+    "openai/gpt-5-mini",
+    "openai/gpt-5-nano",
+  ],
+}