diff --git a/open-sse/config/constants.js b/open-sse/config/constants.js
index d319b363..35092e86 100644
--- a/open-sse/config/constants.js
+++ b/open-sse/config/constants.js
@@ -424,6 +424,10 @@ export const PROVIDERS = {
     baseUrl: "https://api.hyperbolic.xyz/v1/chat/completions",
     format: "openai"
   },
+  ollama: {
+    baseUrl: "https://ollama.com/api/chat",
+    format: "openai"
+  },
   deepgram: {
     baseUrl: "https://api.deepgram.com/v1/listen",
     format: "openai"
diff --git a/open-sse/config/providerModels.js b/open-sse/config/providerModels.js
index c1726fbb..6932b918 100644
--- a/open-sse/config/providerModels.js
+++ b/open-sse/config/providerModels.js
@@ -301,6 +301,9 @@ export const PROVIDER_MODELS = {
     { id: "Qwen/Qwen2.5-Coder-32B-Instruct", name: "Qwen 2.5 Coder 32B" },
     { id: "NousResearch/Hermes-3-Llama-3.1-70B", name: "Hermes 3 70B" },
   ],
+  ollama: [
+    { id: "gpt-oss:120b", name: "GPT OSS 120B" },
+  ],
 };
 
 // Helper functions
@@ -372,6 +375,7 @@ export const PROVIDER_ID_TO_ALIAS = {
   nebius: "nebius",
   siliconflow: "siliconflow",
   hyperbolic: "hyperbolic",
+  ollama: "ollama",
 };
 
 export function getModelsByProviderId(providerId) {
diff --git a/public/providers/ollama.png b/public/providers/ollama.png
new file mode 100644
index 00000000..8cd2cf1e
Binary files /dev/null and b/public/providers/ollama.png differ
diff --git a/src/app/(dashboard)/dashboard/providers/page.js b/src/app/(dashboard)/dashboard/providers/page.js
index 48af6007..de6efa3c 100644
--- a/src/app/(dashboard)/dashboard/providers/page.js
+++ b/src/app/(dashboard)/dashboard/providers/page.js
@@ -214,11 +214,10 @@ export default function ProvidersPage() {
             <button
               onClick={() => handleBatchTest("oauth")}
               disabled={!!testingMode}
-              className={`flex items-center gap-1.5 px-3 py-1.5 rounded-lg text-xs font-medium border transition-colors ${
-                testingMode === "oauth"
-                  ? "bg-primary/20 border-primary/40 text-primary animate-pulse"
-                  : "bg-bg border-border text-text-muted hover:text-text-main hover:border-primary/40"
-              }`}
+              className={`flex items-center gap-1.5 px-3 py-1.5 rounded-lg text-xs font-medium border transition-colors ${testingMode === "oauth"
+                ? "bg-primary/20 border-primary/40 text-primary animate-pulse"
+                : "bg-bg border-border text-text-muted hover:text-text-main hover:border-primary/40"
+                }`}
               title="Test all OAuth connections"
               aria-label="Test all OAuth connections"
             >
@@ -252,12 +251,11 @@ export default function ProvidersPage() {
           <button
             onClick={() => handleBatchTest("free")}
             disabled={!!testingMode}
-            className={`flex items-center gap-1.5 px-3 py-1.5 rounded-lg text-xs font-medium border transition-colors ${
-              testingMode === "free"
-                ? "bg-primary/20 border-primary/40 text-primary animate-pulse"
-                : "bg-bg border-border text-text-muted hover:text-text-main hover:border-primary/40"
+            className={`flex items-center gap-1.5 px-3 py-1.5 rounded-lg text-xs font-medium border transition-colors ${testingMode === "free"
+              ? "bg-primary/20 border-primary/40 text-primary animate-pulse"
+              : "bg-bg border-border text-text-muted hover:text-text-main hover:border-primary/40"
               }`}
-              title="Test all Free connections"
+            title="Test all Free connections"
             aria-label="Test all Free provider connections"
           >
             <span className={`material-symbols-outlined text-[14px]${testingMode === "free" ? " animate-spin" : ""}`}>
@@ -289,12 +287,11 @@ export default function ProvidersPage() {
           <button
             onClick={() => handleBatchTest("apikey")}
             disabled={!!testingMode}
-            className={`flex items-center gap-1.5 px-3 py-1.5 rounded-lg text-xs font-medium border transition-colors ${
-              testingMode === "apikey"
-                ? "bg-primary/20 border-primary/40 text-primary animate-pulse"
-                : "bg-bg border-border text-text-muted hover:text-text-main hover:border-primary/40"
+            className={`flex items-center gap-1.5 px-3 py-1.5 rounded-lg text-xs font-medium border transition-colors ${testingMode === "apikey"
+              ? "bg-primary/20 border-primary/40 text-primary animate-pulse"
+              : "bg-bg border-border text-text-muted hover:text-text-main hover:border-primary/40"
               }`}
-              title="Test all API Key connections"
+            title="Test all API Key connections"
             aria-label="Test all API Key connections"
           >
             <span className={`material-symbols-outlined text-[14px]${testingMode === "apikey" ? " animate-spin" : ""}`}>
@@ -328,11 +325,10 @@ export default function ProvidersPage() {
               <button
                 onClick={() => handleBatchTest("compatible")}
                 disabled={!!testingMode}
-                className={`flex items-center gap-1.5 px-3 py-1.5 rounded-lg text-xs font-medium border transition-colors ${
-                  testingMode === "compatible"
-                    ? "bg-primary/20 border-primary/40 text-primary animate-pulse"
-                    : "bg-bg border-border text-text-muted hover:text-text-main hover:border-primary/40"
-                }`}
+                className={`flex items-center gap-1.5 px-3 py-1.5 rounded-lg text-xs font-medium border transition-colors ${testingMode === "compatible"
+                  ? "bg-primary/20 border-primary/40 text-primary animate-pulse"
+                  : "bg-bg border-border text-text-muted hover:text-text-main hover:border-primary/40"
+                  }`}
                 title="Test all Compatible connections"
               >
                 <span className={`material-symbols-outlined text-[14px]${testingMode === "compatible" ? " animate-spin" : ""}`}>
@@ -449,7 +445,7 @@ function ProviderCard({ providerId, provider, stats, authType, onToggle }) {
           <div className="flex items-center gap-3">
             <div
               className="size-8 rounded-lg flex items-center justify-center"
-              style={{ backgroundColor: `${provider.color}15` }}
+              style={{ backgroundColor: `${provider.color?.length > 7 ? provider.color : provider.color + "15"}` }}
             >
               {imgError ? (
                 <span className="text-xs font-bold" style={{ color: provider.color }}>
@@ -501,7 +497,7 @@ function ProviderCard({ providerId, provider, stats, authType, onToggle }) {
                 <Toggle
                   size="sm"
                   checked={!allDisabled}
-                  onChange={() => {}}
+                  onChange={() => { }}
                   title={allDisabled ? "Enable provider" : "Disable provider"}
                 />
               </div>
@@ -561,7 +557,7 @@ function ApiKeyProviderCard({ providerId, provider, stats, authType, onToggle })
           <div className="flex items-center gap-3">
             <div
               className="size-8 rounded-lg flex items-center justify-center"
-              style={{ backgroundColor: `${provider.color}15` }}
+              style={{ backgroundColor: `${provider.color?.length > 7 ? provider.color : provider.color + "15"}` }}
             >
               {imgError ? (
                 <span className="text-xs font-bold" style={{ color: provider.color }}>
@@ -621,7 +617,7 @@ function ApiKeyProviderCard({ providerId, provider, stats, authType, onToggle })
                 <Toggle
                   size="sm"
                   checked={!allDisabled}
-                  onChange={() => {}}
+                  onChange={() => { }}
                   title={allDisabled ? "Enable provider" : "Disable provider"}
                 />
               </div>
@@ -955,9 +951,8 @@ function ProviderTestResultsView({ results }) {
             <span className="text-text-muted font-mono tabular-nums">{r.latencyMs}ms</span>
           )}
           <span
-            className={`text-[10px] uppercase font-bold px-1.5 py-0.5 rounded ${
-              r.valid ? "bg-emerald-500/15 text-emerald-400" : "bg-red-500/15 text-red-400"
-            }`}
+            className={`text-[10px] uppercase font-bold px-1.5 py-0.5 rounded ${r.valid ? "bg-emerald-500/15 text-emerald-400" : "bg-red-500/15 text-red-400"
+              }`}
           >
             {r.valid ? "OK" : r.diagnosis?.type || "ERROR"}
           </span>
diff --git a/src/app/api/providers/[id]/models/route.js b/src/app/api/providers/[id]/models/route.js
index e5fbda6e..2dface7f 100644
--- a/src/app/api/providers/[id]/models/route.js
+++ b/src/app/api/providers/[id]/models/route.js
@@ -162,6 +162,7 @@ const PROVIDER_MODELS_CONFIG = {
   nebius: createOpenAIModelsConfig("https://api.studio.nebius.ai/v1/models"),
   siliconflow: createOpenAIModelsConfig("https://api.siliconflow.cn/v1/models"),
   hyperbolic: createOpenAIModelsConfig("https://api.hyperbolic.xyz/v1/models"),
+  ollama: createOpenAIModelsConfig("https://ollama.com/api/tags"),
   nanobanana: createOpenAIModelsConfig("https://api.nanobananaapi.ai/v1/models"),
   chutes: createOpenAIModelsConfig("https://llm.chutes.ai/v1/models"),
   nvidia: createOpenAIModelsConfig("https://integrate.api.nvidia.com/v1/models"),
diff --git a/src/app/api/providers/[id]/test/testUtils.js b/src/app/api/providers/[id]/test/testUtils.js
index 2c4e350b..55e05487 100644
--- a/src/app/api/providers/[id]/test/testUtils.js
+++ b/src/app/api/providers/[id]/test/testUtils.js
@@ -460,6 +460,10 @@ async function testApiKeyConnection(connection, effectiveProxy = null) {
         const res = await fetchWithConnectionProxy("https://api.hyperbolic.xyz/v1/models", { headers: { Authorization: `Bearer ${connection.apiKey}` } }, effectiveProxy);
         return { valid: res.ok, error: res.ok ? null : "Invalid API key" };
       }
+      case "ollama": {
+        const res = await fetch("https://ollama.com/api/tags", { headers: { Authorization: `Bearer ${connection.apiKey}` } });
+        return { valid: res.ok, error: res.ok ? null : "Invalid API key" };
+      }
       case "deepgram": {
         const res = await fetchWithConnectionProxy("https://api.deepgram.com/v1/projects", { headers: { Authorization: `Token ${connection.apiKey}` } }, effectiveProxy);
         return { valid: res.ok, error: res.ok ? null : "Invalid API key" };
diff --git a/src/app/api/providers/validate/route.js b/src/app/api/providers/validate/route.js
index e4f16c94..5087c2eb 100644
--- a/src/app/api/providers/validate/route.js
+++ b/src/app/api/providers/validate/route.js
@@ -163,6 +163,7 @@ export async function POST(request) {
         case "nebius":
         case "siliconflow":
         case "hyperbolic":
+        case "ollama":
         case "assemblyai":
         case "nanobanana":
         case "chutes":
@@ -180,6 +181,7 @@ export async function POST(request) {
             nebius: "https://api.studio.nebius.ai/v1/models",
             siliconflow: "https://api.siliconflow.cn/v1/models",
             hyperbolic: "https://api.hyperbolic.xyz/v1/models",
+            ollama: "https://ollama.com/api/tags",
             assemblyai: "https://api.assemblyai.com/v1/account",
             nanobanana: "https://api.nanobananaapi.ai/v1/models",
             chutes: "https://llm.chutes.ai/v1/models",
diff --git a/src/shared/constants/config.js b/src/shared/constants/config.js
index a680cf8b..0d633ea9 100644
--- a/src/shared/constants/config.js
+++ b/src/shared/constants/config.js
@@ -47,6 +47,7 @@ export const PROVIDER_ENDPOINTS = {
   openai: "https://api.openai.com/v1/chat/completions",
   anthropic: "https://api.anthropic.com/v1/messages",
   gemini: "https://generativelanguage.googleapis.com/v1beta/models",
+  ollama: "https://ollama.com/api/chat",
 };
 
 // Re-export from providers.js for backward compatibility
diff --git a/src/shared/constants/providers.js b/src/shared/constants/providers.js
index 975c9a18..d6b69396 100644
--- a/src/shared/constants/providers.js
+++ b/src/shared/constants/providers.js
@@ -47,8 +47,9 @@ export const APIKEY_PROVIDERS = {
   hyperbolic: { id: "hyperbolic", alias: "hyp", name: "Hyperbolic", icon: "bolt", color: "#00D4FF", textIcon: "HY", website: "https://hyperbolic.xyz" },
   deepgram: { id: "deepgram", alias: "dg", name: "Deepgram", icon: "mic", color: "#13EF93", textIcon: "DG", website: "https://deepgram.com" },
   assemblyai: { id: "assemblyai", alias: "aai", name: "AssemblyAI", icon: "record_voice_over", color: "#0062FF", textIcon: "AA", website: "https://assemblyai.com" },
+  ollama: { id: "ollama", alias: "ollama", name: "Ollama Cloud", icon: "cloud", color: "#ffffffff", textIcon: "OL", website: "https://ollama.com" },
   nanobanana: { id: "nanobanana", alias: "nb", name: "NanoBanana", icon: "image", color: "#FFD700", textIcon: "NB", website: "https://nanobananaapi.ai" },
-  chutes: { id: "chutes", alias: "ch", name: "Chutes AI", icon: "water_drop", color: "#5B6EF5", textIcon: "CH", website: "https://chutes.ai" },
+  chutes: { id: "chutes", alias: "ch", name: "Chutes AI", icon: "water_drop", color: "#ffffffff", textIcon: "CH", website: "https://chutes.ai" },
 };
 
 export const OPENAI_COMPATIBLE_PREFIX = "openai-compatible-";
diff --git a/tests/unit/translator-request-normalization.test.js b/tests/unit/translator-request-normalization.test.js
new file mode 100644
index 00000000..0a67a91d
--- /dev/null
+++ b/tests/unit/translator-request-normalization.test.js
@@ -0,0 +1,118 @@
+import { describe, it, expect } from "vitest";
+
+import { FORMATS } from "../../open-sse/translator/formats.js";
+import { translateRequest } from "../../open-sse/translator/index.js";
+import { claudeToOpenAIRequest } from "../../open-sse/translator/request/claude-to-openai.js";
+import { filterToOpenAIFormat } from "../../open-sse/translator/helpers/openaiHelper.js";
+import { parseSSELine } from "../../open-sse/utils/streamHelpers.js";
+
+describe("request normalization", () => {
+  it("claudeToOpenAIRequest flattens text-only content arrays into string", () => {
+    const body = {
+      messages: [
+        {
+          role: "user",
+          content: [
+            { type: "text", text: "hi" },
+            { type: "text", text: "there" },
+          ],
+        },
+      ],
+    };
+
+    const result = claudeToOpenAIRequest("gpt-oss:120b", body, true);
+    expect(result.messages[0].content).toBe("hi\nthere");
+  });
+
+  it("claudeToOpenAIRequest preserves multimodal arrays", () => {
+    const body = {
+      messages: [
+        {
+          role: "user",
+          content: [
+            { type: "text", text: "describe" },
+            {
+              type: "image",
+              source: {
+                type: "base64",
+                media_type: "image/png",
+                data: "ZmFrZQ==",
+              },
+            },
+          ],
+        },
+      ],
+    };
+
+    const result = claudeToOpenAIRequest("gpt-4o", body, true);
+    expect(Array.isArray(result.messages[0].content)).toBe(true);
+  });
+
+  it("filterToOpenAIFormat flattens text-only arrays to string", () => {
+    const body = {
+      messages: [
+        {
+          role: "user",
+          content: [
+            { type: "text", text: "a" },
+            { type: "text", text: "b" },
+          ],
+        },
+      ],
+    };
+
+    const result = filterToOpenAIFormat(JSON.parse(JSON.stringify(body)));
+    expect(result.messages[0].content).toBe("a\nb");
+  });
+
+  it("translateRequest keeps /v1/messages Claude->OpenAI text payloads string-safe", () => {
+    const body = {
+      model: "ollama/gpt-oss:120b",
+      system: [{ type: "text", text: "You are helpful." }],
+      messages: [
+        {
+          role: "user",
+          content: [
+            { type: "text", text: "hello" },
+            { type: "text", text: "world" },
+          ],
+        },
+      ],
+      stream: true,
+    };
+
+    const result = translateRequest(
+      FORMATS.CLAUDE,
+      FORMATS.OPENAI,
+      "gpt-oss:120b",
+      JSON.parse(JSON.stringify(body)),
+      true,
+      null,
+      "ollama",
+    );
+
+    const userMessage = result.messages.find((m) => m.role === "user");
+    expect(typeof userMessage.content).toBe("string");
+    expect(userMessage.content).toBe("hello\nworld");
+  });
+
+  it("parseSSELine supports provider raw NDJSON stream lines", () => {
+    const raw = JSON.stringify({
+      model: "gpt-oss:120b",
+      message: { role: "assistant", content: "hello" },
+      done: false,
+    });
+
+    const parsed = parseSSELine(raw);
+    expect(parsed).toEqual({
+      model: "gpt-oss:120b",
+      message: { role: "assistant", content: "hello" },
+      done: false,
+    });
+  });
+
+  it("parseSSELine still supports SSE data lines", () => {
+    const parsed = parseSSELine('data: {"choices":[{"delta":{"content":"hi"}}]}');
+    expect(parsed.choices[0].delta.content).toBe("hi");
+  });
+});