diff --git a/src/agents/models-config.e2e-harness.ts b/src/agents/models-config.e2e-harness.ts
index e5c11dcc0a2..7c637e334dc 100644
--- a/src/agents/models-config.e2e-harness.ts
+++ b/src/agents/models-config.e2e-harness.ts
@@ -109,6 +109,7 @@ export const MODELS_CONFIG_IMPLICIT_ENV_VARS = [
   "VOLCANO_ENGINE_API_KEY",
   "BYTEPLUS_API_KEY",
   "GIGACHAT_CREDENTIALS",
+  "GIGACHAT_BASE_URL",
   "KILOCODE_API_KEY",
   "KIMI_API_KEY",
   "KIMICODE_API_KEY",
diff --git a/src/agents/models-config.providers.gigachat.test.ts b/src/agents/models-config.providers.gigachat.test.ts
index aa318bcc105..44ab4dc71dc 100644
--- a/src/agents/models-config.providers.gigachat.test.ts
+++ b/src/agents/models-config.providers.gigachat.test.ts
@@ -20,4 +20,21 @@ describe("GigaChat implicit provider", () => {
       expect(providers?.gigachat?.models?.map((model) => model.id)).toEqual(["GigaChat-2-Max"]);
     });
   });
+
+  it("honors GIGACHAT_BASE_URL for implicit providers", async () => {
+    const agentDir = mkdtempSync(join(tmpdir(), "openclaw-test-"));
+
+    await withEnvAsync(
+      {
+        GIGACHAT_CREDENTIALS: "user:password",
+        GIGACHAT_BASE_URL: "https://preview.gigachat.example/api/v1",
+      },
+      async () => {
+        const providers = await resolveImplicitProvidersForTest({ agentDir });
+
+        expect(providers?.gigachat?.baseUrl).toBe("https://preview.gigachat.example/api/v1");
+        expect(providers?.gigachat?.apiKey).toBe("GIGACHAT_CREDENTIALS");
+      },
+    );
+  });
 });
diff --git a/src/agents/models-config.providers.ts b/src/agents/models-config.providers.ts
index 48ff3cbbe5c..e9965494b7c 100644
--- a/src/agents/models-config.providers.ts
+++ b/src/agents/models-config.providers.ts
@@ -88,11 +88,11 @@ function normalizeProviderBaseUrl(baseUrl: string | undefined): string {
   }
 }
 
-function buildGigachatProvider(apiKey?: string): ProviderConfig {
+function buildGigachatProvider(params: { apiKey?: string; baseUrl?: string }): ProviderConfig {
   return {
-    baseUrl: GIGACHAT_BASE_URL,
+    baseUrl: params.baseUrl?.trim() || GIGACHAT_BASE_URL,
     api: "openai-completions",
-    ...(apiKey ? { apiKey } : {}),
+    ...(params.apiKey ? { apiKey: params.apiKey } : {}),
     models: [buildGigachatModelDefinition()],
   } satisfies ProviderConfig;
 }
@@ -713,7 +713,10 @@ function resolveImplicitGigachatProvider(ctx: ImplicitProviderContext): Provider
     return null;
   }
 
-  return buildGigachatProvider(auth.apiKey);
+  return buildGigachatProvider({
+    apiKey: auth.apiKey,
+    baseUrl: ctx.env.GIGACHAT_BASE_URL,
+  });
 }
 
 export async function resolveImplicitProviders(