feat: Add support for claude opus 4.7 xhigh adaptive reasoning effort (#22833)

Co-authored-by: Aiden Cline <[email protected]>

2 files changed, 107 insertions, 6 deletions

diff --git a/packages/opencode/src/provider/transform.ts b/packages/opencode/src/provider/transform.ts
index c940b31c8..92862b0ca 100644
--- a/packages/opencode/src/provider/transform.ts
+++ b/packages/opencode/src/provider/transform.ts
@@ -389,12 +389,21 @@ export function topK(model: Provider.Model) {
 const WIDELY_SUPPORTED_EFFORTS = ["low", "medium", "high"]
 const OPENAI_EFFORTS = ["none", "minimal", ...WIDELY_SUPPORTED_EFFORTS, "xhigh"]
 
+function anthropicAdaptiveEfforts(apiId: string): string[] | null {
+  if (["opus-4-7", "opus-4.7"].some((v) => apiId.includes(v))) {
+    return ["low", "medium", "high", "xhigh", "max"]
+  }
+  if (["opus-4-6", "opus-4.6", "sonnet-4-6", "sonnet-4.6"].some((v) => apiId.includes(v))) {
+    return ["low", "medium", "high", "max"]
+  }
+  return null
+}
+
 export function variants(model: Provider.Model): Record<string, Record<string, any>> {
   if (!model.capabilities.reasoning) return {}
 
   const id = model.id.toLowerCase()
-  const isAnthropicAdaptive = ["opus-4-6", "opus-4.6", "sonnet-4-6", "sonnet-4.6"].some((v) => model.api.id.includes(v))
-  const adaptiveEfforts = ["low", "medium", "high", "max"]
+  const adaptiveEfforts = anthropicAdaptiveEfforts(model.api.id)
   if (
     id.includes("deepseek") ||
     id.includes("minimax") ||
@@ -429,7 +438,7 @@ export function variants(model: Provider.Model): Record<string, Record<string, a
 
     case "@ai-sdk/gateway":
       if (model.id.includes("anthropic")) {
-        if (isAnthropicAdaptive) {
+        if (adaptiveEfforts) {
           return Object.fromEntries(
             adaptiveEfforts.map((effort) => [
               effort,
@@ -578,7 +587,7 @@ export function variants(model: Provider.Model): Record<string, Record<string, a
     case "@ai-sdk/google-vertex/anthropic":
       // https://v5.ai-sdk.dev/providers/ai-sdk-providers/google-vertex#anthropic-provider
 
-      if (isAnthropicAdaptive) {
+      if (adaptiveEfforts) {
         return Object.fromEntries(
           adaptiveEfforts.map((effort) => [
             effort,
@@ -609,7 +618,7 @@ export function variants(model: Provider.Model): Record<string, Record<string, a
 
     case "@ai-sdk/amazon-bedrock":
       // https://v5.ai-sdk.dev/providers/ai-sdk-providers/amazon-bedrock
-      if (isAnthropicAdaptive) {
+      if (adaptiveEfforts) {
         return Object.fromEntries(
           adaptiveEfforts.map((effort) => [
             effort,
@@ -716,7 +725,7 @@ export function variants(model: Provider.Model): Record<string, Record<string, a
 
     case "@jerome-benoit/sap-ai-provider-v2":
       if (model.api.id.includes("anthropic")) {
-        if (isAnthropicAdaptive) {
+        if (adaptiveEfforts) {
           return Object.fromEntries(
             adaptiveEfforts.map((effort) => [
               effort,
diff --git a/packages/opencode/test/provider/transform.test.ts b/packages/opencode/test/provider/transform.test.ts
index 0666d0f64..d53ce38b1 100644
--- a/packages/opencode/test/provider/transform.test.ts
+++ b/packages/opencode/test/provider/transform.test.ts
@@ -2246,6 +2246,46 @@ describe("ProviderTransform.variants", () => {
       })
     })
 
+    test("anthropic opus 4.7 models return adaptive thinking options with xhigh", () => {
+      const model = createMockModel({
+        id: "anthropic/claude-opus-4-7",
+        providerID: "gateway",
+        api: {
+          id: "anthropic/claude-opus-4-7",
+          url: "https://gateway.ai",
+          npm: "@ai-sdk/gateway",
+        },
+      })
+      const result = ProviderTransform.variants(model)
+      expect(Object.keys(result)).toEqual(["low", "medium", "high", "xhigh", "max"])
+      expect(result.xhigh).toEqual({
+        thinking: {
+          type: "adaptive",
+        },
+        effort: "xhigh",
+      })
+      expect(result.max).toEqual({
+        thinking: {
+          type: "adaptive",
+        },
+        effort: "max",
+      })
+    })
+
+    test("anthropic opus 4.7 dot-format models return adaptive thinking options with xhigh", () => {
+      const model = createMockModel({
+        id: "anthropic/claude-opus-4-7",
+        providerID: "gateway",
+        api: {
+          id: "anthropic/claude-opus-4.7",
+          url: "https://gateway.ai",
+          npm: "@ai-sdk/gateway",
+        },
+      })
+      const result = ProviderTransform.variants(model)
+      expect(Object.keys(result)).toEqual(["low", "medium", "high", "xhigh", "max"])
+    })
+
     test("anthropic models return anthropic thinking options", () => {
       const model = createMockModel({
         id: "anthropic/claude-sonnet-4",
@@ -2654,6 +2694,32 @@ describe("ProviderTransform.variants", () => {
       })
     })
 
+    test("opus 4.7 returns adaptive thinking options with xhigh", () => {
+      const model = createMockModel({
+        id: "anthropic/claude-opus-4-7",
+        providerID: "anthropic",
+        api: {
+          id: "claude-opus-4-7",
+          url: "https://api.anthropic.com",
+          npm: "@ai-sdk/anthropic",
+        },
+      })
+      const result = ProviderTransform.variants(model)
+      expect(Object.keys(result)).toEqual(["low", "medium", "high", "xhigh", "max"])
+      expect(result.xhigh).toEqual({
+        thinking: {
+          type: "adaptive",
+        },
+        effort: "xhigh",
+      })
+      expect(result.max).toEqual({
+        thinking: {
+          type: "adaptive",
+        },
+        effort: "max",
+      })
+    })
+
     test("returns high and max with thinking config", () => {
       const model = createMockModel({
         id: "anthropic/claude-4",
@@ -2702,6 +2768,32 @@ describe("ProviderTransform.variants", () => {
       })
     })
 
+    test("anthropic opus 4.7 returns adaptive reasoning options with xhigh", () => {
+      const model = createMockModel({
+        id: "bedrock/anthropic-claude-opus-4-7",
+        providerID: "bedrock",
+        api: {
+          id: "anthropic.claude-opus-4-7",
+          url: "https://bedrock.amazonaws.com",
+          npm: "@ai-sdk/amazon-bedrock",
+        },
+      })
+      const result = ProviderTransform.variants(model)
+      expect(Object.keys(result)).toEqual(["low", "medium", "high", "xhigh", "max"])
+      expect(result.xhigh).toEqual({
+        reasoningConfig: {
+          type: "adaptive",
+          maxReasoningEffort: "xhigh",
+        },
+      })
+      expect(result.max).toEqual({
+        reasoningConfig: {
+          type: "adaptive",
+          maxReasoningEffort: "max",
+        },
+      })
+    })
+
     test("returns WIDELY_SUPPORTED_EFFORTS with reasoningConfig", () => {
       const model = createMockModel({
         id: "bedrock/llama-4",