diff --git a/packages/opencode/src/provider/transform.ts b/packages/opencode/src/provider/transform.ts
index 779c6bad5..7bfee4869 100644
--- a/packages/opencode/src/provider/transform.ts
+++ b/packages/opencode/src/provider/transform.ts
@@ -683,7 +683,7 @@ export function variants(model: Provider.Model): Record<string, Record<string, a
     id.includes("glm") ||
     (id.includes("mistral") && model.api.npm !== "@ai-sdk/mistral") ||
     id.includes("kimi") ||
-    id.includes("k2p5") ||
+    id.includes("k2p") ||
     id.includes("qwen") ||
     id.includes("big-pickle")
   )
@@ -1154,11 +1154,11 @@ export function options(input: {
     }
   }
 
-  // Enable thinking by default for kimi-k2.5/k2p5 models using anthropic SDK
+  // Enable thinking by default for kimi models using anthropic SDK
   const modelId = input.model.api.id.toLowerCase()
   if (
     (input.model.api.npm === "@ai-sdk/anthropic" || input.model.api.npm === "@ai-sdk/google-vertex/anthropic") &&
-    (modelId.includes("k2p5") || modelId.includes("kimi-k2.5") || modelId.includes("kimi-k2p5"))
+    (modelId.includes("k2p") || modelId.includes("kimi-k2.") || modelId.includes("kimi-k2p"))
   ) {
     result["thinking"] = {
       type: "enabled",
diff --git a/packages/opencode/test/provider/transform.test.ts b/packages/opencode/test/provider/transform.test.ts
index 929382430..2804820a2 100644
--- a/packages/opencode/test/provider/transform.test.ts
+++ b/packages/opencode/test/provider/transform.test.ts
@@ -479,8 +479,8 @@ describe("ProviderTransform.options - Kimi anthropic thinking", () => {
       headers: {},
     }) as any
 
-  test("enables thinking for the supported Kimi K2.5 anthropic variants", () => {
-    for (const apiId of ["kimi-k2.5", "kimi-k2p5", "k2p5"]) {
+  test("enables thinking for supported Kimi K2.x anthropic variants", () => {
+    for (const apiId of ["kimi-k2.5", "kimi-k2p5", "k2p5", "kimi-k2.6", "kimi-k2p6", "k2p6"]) {
       const result = ProviderTransform.options({
         model: createModel(apiId),
         sessionID,
@@ -493,8 +493,8 @@ describe("ProviderTransform.options - Kimi anthropic thinking", () => {
     }
   })
 
-  test("does not broaden thinking to unrelated Kimi K2 or K2P variants", () => {
-    for (const apiId of ["kimi-k2.6", "kimi-k2-preview", "kimi-k2p6", "k2p6"]) {
+  test("does not enable thinking for Kimi variants that lack a K2 dot or K2P tag", () => {
+    for (const apiId of ["kimi-k2-preview", "kimi-k2", "kimi-k2-thinking"]) {
       const result = ProviderTransform.options({
         model: createModel(apiId),
         sessionID,