wip

packages/opencode/src/provider/transform.ts

@@ -1,3 +1,5 @@
+// TODO: this file is a fuckfest, will cleanup better soon
+
 import type { APICallError, ModelMessage } from "ai"
 import { mergeDeep, unique } from "remeda"
 import type { JSONSchema7 } from "@ai-sdk/provider"
@@ -360,8 +362,51 @@ export namespace ProviderTransform {
         if (!model.id.includes("gpt") && !model.id.includes("gemini-3")) return {}
         return Object.fromEntries(OPENAI_EFFORTS.map((effort) => [effort, { reasoning: { effort } }]))
 
-      // TODO: YOU CANNOT SET max_tokens if this is set!!!
       case "@ai-sdk/gateway":
+        if (model.id.includes("anthropic")) {
+          return {
+            high: {
+              reasoningConfig: {
+                type: "enabled",
+                budgetTokens: 16000,
+              },
+            },
+            max: {
+              reasoningConfig: {
+                type: "enabled",
+                budgetTokens: 31999,
+              },
+            },
+          }
+        }
+        if (model.id.includes("google")) {
+          if (id.includes("2.5")) {
+            return {
+              high: {
+                thinkingConfig: {
+                  includeThoughts: true,
+                  thinkingBudget: 16000,
+                },
+              },
+              max: {
+                thinkingConfig: {
+                  includeThoughts: true,
+                  thinkingBudget: 24576,
+                },
+              },
+            }
+          }
+          return Object.fromEntries(
+            ["low", "high"].map((effort) => [
+              effort,
+              {
+                includeThoughts: true,
+                thinkingLevel: effort,
+              },
+            ]),
+          )
+        }
+
         return Object.fromEntries(OPENAI_EFFORTS.map((effort) => [effort, { reasoningEffort: effort }]))
 
       case "@ai-sdk/github-copilot":
@@ -704,8 +749,24 @@ export namespace ProviderTransform {
   }
 
   export function providerOptions(model: Provider.Model, options: { [x: string]: any }) {
-    const key = sdkKey(model.api.npm) ?? model.providerID
-    return { [key]: options }
+    if (model.api.npm !== "@ai-sdk/gateway") {
+      const key = sdkKey(model.api.npm) ?? model.providerID
+      return { [key]: options }
+    }
+
+    const key = model.api.id.includes("/") ? model.api.id.split("/")[0] : (sdkKey(model.api.npm) ?? model.providerID)
+
+    const rest = { ...options }
+    const gate = rest.gateway
+    delete rest.gateway
+    if (Object.keys(rest).length === 0) {
+      return { gateway: gate }
+    }
+
+    return {
+      gateway: gate,
+      [key]: rest,
+    }
   }
 
   export function maxOutputTokens(

packages/opencode/test/provider/transform.test.ts

@@ -175,6 +175,109 @@ describe("ProviderTransform.options - gpt-5 textVerbosity", () => {
   })
 })
 
+describe("ProviderTransform.providerOptions", () => {
+  const createModel = (overrides: Partial<any> = {}) =>
+    ({
+      id: "test/test-model",
+      providerID: "test",
+      api: {
+        id: "test-model",
+        url: "https://api.test.com",
+        npm: "@ai-sdk/openai",
+      },
+      name: "Test Model",
+      capabilities: {
+        temperature: true,
+        reasoning: true,
+        attachment: true,
+        toolcall: true,
+        input: { text: true, audio: false, image: true, video: false, pdf: false },
+        output: { text: true, audio: false, image: false, video: false, pdf: false },
+        interleaved: false,
+      },
+      cost: {
+        input: 0.001,
+        output: 0.002,
+        cache: { read: 0.0001, write: 0.0002 },
+      },
+      limit: {
+        context: 200_000,
+        output: 64_000,
+      },
+      status: "active",
+      options: {},
+      headers: {},
+      release_date: "2024-01-01",
+      ...overrides,
+    }) as any
+
+  test("uses sdk key for non-gateway models", () => {
+    const model = createModel({
+      providerID: "my-bedrock",
+      api: {
+        id: "anthropic.claude-sonnet-4",
+        url: "https://bedrock.aws",
+        npm: "@ai-sdk/amazon-bedrock",
+      },
+    })
+
+    expect(ProviderTransform.providerOptions(model, { cachePoint: { type: "default" } })).toEqual({
+      bedrock: { cachePoint: { type: "default" } },
+    })
+  })
+
+  test("uses gateway model provider slug for gateway models", () => {
+    const model = createModel({
+      providerID: "vercel",
+      api: {
+        id: "anthropic/claude-sonnet-4",
+        url: "https://ai-gateway.vercel.sh/v3/ai",
+        npm: "@ai-sdk/gateway",
+      },
+    })
+
+    expect(ProviderTransform.providerOptions(model, { thinking: { type: "enabled", budgetTokens: 12_000 } })).toEqual({
+      anthropic: { thinking: { type: "enabled", budgetTokens: 12_000 } },
+    })
+  })
+
+  test("splits gateway routing options from provider-specific options", () => {
+    const model = createModel({
+      providerID: "vercel",
+      api: {
+        id: "anthropic/claude-sonnet-4",
+        url: "https://ai-gateway.vercel.sh/v3/ai",
+        npm: "@ai-sdk/gateway",
+      },
+    })
+
+    expect(
+      ProviderTransform.providerOptions(model, {
+        gateway: { order: ["vertex", "anthropic"] },
+        thinking: { type: "enabled", budgetTokens: 12_000 },
+      }),
+    ).toEqual({
+      gateway: { order: ["vertex", "anthropic"] },
+      anthropic: { thinking: { type: "enabled", budgetTokens: 12_000 } },
+    } as any)
+  })
+
+  test("falls back to gateway key when model id has no provider slug", () => {
+    const model = createModel({
+      providerID: "vercel",
+      api: {
+        id: "claude-sonnet-4",
+        url: "https://ai-gateway.vercel.sh/v3/ai",
+        npm: "@ai-sdk/gateway",
+      },
+    })
+
+    expect(ProviderTransform.providerOptions(model, { reasoningEffort: "high" })).toEqual({
+      gateway: { reasoningEffort: "high" },
+    })
+  })
+})
+
 describe("ProviderTransform.maxOutputTokens", () => {
   test("returns 32k when modelLimit > 32k", () => {
     const modelLimit = 100000