diff --git a/.changeset/fair-moonshotai.md b/.changeset/fair-moonshotai.md
new file mode 100644
index 0000000000..67c0917aaf
--- /dev/null
+++ b/.changeset/fair-moonshotai.md
@@ -0,0 +1,5 @@
+---
+"workers-ai-provider": patch
+---
+
+Support Moonshot AI unified billing catalog slugs such as `moonshotai/kimi-k3`.
diff --git a/packages/gateway-core/src/gateway-providers.ts b/packages/gateway-core/src/gateway-providers.ts
index ac692df4fa..0b268db6a2 100644
--- a/packages/gateway-core/src/gateway-providers.ts
+++ b/packages/gateway-core/src/gateway-providers.ts
@@ -240,6 +240,17 @@ export const GATEWAY_PROVIDERS: GatewayProviderInfo[] = [
 		billing: "unified",
 		authHeaders: ["authorization"],
 	},
+	{
+		// Moonshot AI / Kimi is served by the unified billing run catalog using
+		// the OpenAI-compatible response format. It has no native gateway path.
+		resolverKey: "moonshotai",
+		gatewayProviderId: "moonshotai",
+		wireFormat: "openai",
+		runCatalog: true,
+		gatewayPath: false,
+		billing: "unified",
+		authHeaders: ["authorization"],
+	},
 	{
 		resolverKey: "google-vertex",
 		gatewayProviderId: "google-vertex-ai",
diff --git a/packages/gateway-core/test/gateway-providers.test.ts b/packages/gateway-core/test/gateway-providers.test.ts
index c5ff7cf0d8..ecbc739ff5 100644
--- a/packages/gateway-core/test/gateway-providers.test.ts
+++ b/packages/gateway-core/test/gateway-providers.test.ts
@@ -22,6 +22,16 @@ describe("findProviderBySlug", () => {
 		expect(findProviderBySlug("azure")?.resolverKey).toBe("azure-openai");
 	});
 
+	it("resolves the Moonshot AI unified catalog slug", () => {
+		expect(findProviderBySlug("moonshotai")).toMatchObject({
+			gatewayProviderId: "moonshotai",
+			wireFormat: "openai",
+			runCatalog: true,
+			gatewayPath: false,
+			billing: "unified",
+		});
+	});
+
 	it("maps google ⇒ google-ai-studio gateway id, anthropic native run wire", () => {
 		expect(findProviderBySlug("google")?.gatewayProviderId).toBe("google-ai-studio");
 		const anthropic = findProviderBySlug("anthropic");
diff --git a/packages/workers-ai-provider/test/gateway-delegate.test.ts b/packages/workers-ai-provider/test/gateway-delegate.test.ts
index 038cf11a33..09c1496eed 100644
--- a/packages/workers-ai-provider/test/gateway-delegate.test.ts
+++ b/packages/workers-ai-provider/test/gateway-delegate.test.ts
@@ -342,7 +342,7 @@ describe("createGatewayDelegate", () => {
 		);
 	});
 
-	it("builds alibaba + minimax on the run path with the openai plugin", () => {
+	it("builds unified run-only providers with the openai plugin", () => {
 		const { binding } = makeBinding();
 		const wai = createGatewayDelegate({
 			binding,
@@ -353,6 +353,7 @@ describe("createGatewayDelegate", () => {
 		// so a single openai plugin is enough.
 		expect(wai("alibaba/qwen3-max").modelId).toBe("qwen3-max");
 		expect(wai("minimax/m3").modelId).toBe("m3");
+		expect(wai("moonshotai/kimi-k3").modelId).toBe("kimi-k3");
 	});
 
 	it("rejects gateway-path use of a run-only provider with a clear error", () => {
@@ -362,10 +363,13 @@ describe("createGatewayDelegate", () => {
 			gateway: "default",
 			providers: [capturePlugin("openai").plugin],
 		});
-		// alibaba/minimax have no gateway path — caching, server fallback, and
+		// run-only providers have no gateway path — caching, server fallback, and
 		// transport:"gateway" must fail fast at build time, not upstream.
 		expect(() => wai("alibaba/qwen3-max", { transport: "gateway" })).toThrow(/no gateway path/);
 		expect(() => wai("alibaba/qwen3-max", { cacheTtl: 60 })).toThrow(/no gateway path/);
+		expect(() => wai("moonshotai/kimi-k3", { transport: "gateway" })).toThrow(
+			/no gateway path/,
+		);
 		expect(() =>
 			wai("minimax/m3", { fallback: { mode: "server", models: ["minimax/m2.7"] } }),
 		).toThrow(/no gateway path/);
diff --git a/packages/workers-ai-provider/test/gateway-providers.test.ts b/packages/workers-ai-provider/test/gateway-providers.test.ts
index 07ac2646e0..af5dafd24d 100644
--- a/packages/workers-ai-provider/test/gateway-providers.test.ts
+++ b/packages/workers-ai-provider/test/gateway-providers.test.ts
@@ -205,7 +205,7 @@ describe("gateway provider registry", () => {
 			.map((p) => p.resolverKey)
 			.sort();
 		// The headline directory set (openai/anthropic/google/xai/groq), the
-		// run-only unified chat providers alibaba + minimax, and deepseek — the one
+		// run-only unified chat providers alibaba + minimax + moonshotai, and deepseek — the one
 		// OpenAI-wire long-tail provider actually on the unified `env.AI.run` catalog
 		// (#596). The rest of the long tail (mistral/perplexity/cerebras/openrouter/
 		// fireworks) is BYOK gateway-path only, verified by the e2e run-path probe.
@@ -216,13 +216,14 @@ describe("gateway provider registry", () => {
 			"google",
 			"groq",
 			"minimax",
+			"moonshotai",
 			"openai",
 			"xai",
 		]);
 	});
 
-	it("adds alibaba + minimax as run-only openai-wire chat providers", () => {
-		for (const slug of ["alibaba", "minimax"]) {
+	it("adds run-only openai-wire chat providers", () => {
+		for (const slug of ["alibaba", "minimax", "moonshotai"]) {
 			const info = findProviderBySlug(slug);
 			expect(info, slug).toMatchObject({
 				runCatalog: true,