diff --git a/src/commands/onboard-auth.config-core.gigachat.test.ts b/src/commands/onboard-auth.config-core.gigachat.test.ts
new file mode 100644
index 00000000000..65d7e5caf65
--- /dev/null
+++ b/src/commands/onboard-auth.config-core.gigachat.test.ts
@@ -0,0 +1,68 @@
+import { describe, expect, it } from "vitest";
+import type { OpenClawConfig } from "../config/config.js";
+import { resolveAgentModelPrimaryValue } from "../config/model-input.js";
+import { applyGigachatConfig, applyGigachatProviderConfig } from "./onboard-auth.config-core.js";
+import {
+  buildGigachatModelDefinition,
+  GIGACHAT_BASE_URL,
+  GIGACHAT_DEFAULT_CONTEXT_WINDOW,
+  GIGACHAT_DEFAULT_COST,
+  GIGACHAT_DEFAULT_MAX_TOKENS,
+  GIGACHAT_DEFAULT_MODEL_ID,
+  GIGACHAT_DEFAULT_MODEL_REF,
+} from "./onboard-auth.models.js";
+
+const emptyCfg: OpenClawConfig = {};
+
+describe("GigaChat provider config", () => {
+  describe("buildGigachatModelDefinition", () => {
+    it("marks GigaChat 2 Max as image-capable", () => {
+      const model = buildGigachatModelDefinition();
+
+      expect(model.id).toBe(GIGACHAT_DEFAULT_MODEL_ID);
+      expect(model.name).toBe("GigaChat 2 Max");
+      expect(model.reasoning).toBe(false);
+      expect(model.input).toEqual(["text", "image"]);
+      expect(model.contextWindow).toBe(GIGACHAT_DEFAULT_CONTEXT_WINDOW);
+      expect(model.maxTokens).toBe(GIGACHAT_DEFAULT_MAX_TOKENS);
+      expect(model.cost).toEqual(GIGACHAT_DEFAULT_COST);
+    });
+  });
+
+  describe("applyGigachatProviderConfig", () => {
+    it("registers the image-capable default model", () => {
+      const result = applyGigachatProviderConfig(emptyCfg);
+      const provider = result.models?.providers?.gigachat;
+      const model = provider?.models?.find((entry) => entry.id === GIGACHAT_DEFAULT_MODEL_ID);
+
+      expect(provider?.baseUrl).toBe(GIGACHAT_BASE_URL);
+      expect(provider?.api).toBe("openai-completions");
+      expect(model?.input).toEqual(["text", "image"]);
+    });
+
+    it("sets the default GigaChat alias without changing the selected primary model", () => {
+      const cfg: OpenClawConfig = {
+        agents: {
+          defaults: {
+            model: { primary: "openai/gpt-5" },
+          },
+        },
+      };
+
+      const result = applyGigachatProviderConfig(cfg);
+
+      expect(result.agents?.defaults?.models?.[GIGACHAT_DEFAULT_MODEL_REF]?.alias).toBe("GigaChat");
+      expect(resolveAgentModelPrimaryValue(result.agents?.defaults?.model)).toBe("openai/gpt-5");
+    });
+  });
+
+  describe("applyGigachatConfig", () => {
+    it("sets GigaChat as the default model", () => {
+      const result = applyGigachatConfig(emptyCfg);
+
+      expect(resolveAgentModelPrimaryValue(result.agents?.defaults?.model)).toBe(
+        GIGACHAT_DEFAULT_MODEL_REF,
+      );
+    });
+  });
+});
diff --git a/src/commands/onboard-auth.models.ts b/src/commands/onboard-auth.models.ts
index 882c6faf7eb..d9169640686 100644
--- a/src/commands/onboard-auth.models.ts
+++ b/src/commands/onboard-auth.models.ts
@@ -234,7 +234,7 @@ export function buildGigachatModelDefinition(): ModelDefinitionConfig {
     id: GIGACHAT_DEFAULT_MODEL_ID,
     name: "GigaChat 2 Max",
     reasoning: false,
-    input: ["text"],
+    input: ["text", "image"],
     cost: GIGACHAT_DEFAULT_COST,
     contextWindow: GIGACHAT_DEFAULT_CONTEXT_WINDOW,
     maxTokens: GIGACHAT_DEFAULT_MAX_TOKENS,