diff --git a/core/llm/llms/Ollama.ts b/core/llm/llms/Ollama.ts
index d940083222a..0a239fce909 100644
--- a/core/llm/llms/Ollama.ts
+++ b/core/llm/llms/Ollama.ts
@@ -269,6 +269,11 @@ class Ollama extends BaseLLM implements ModelInstaller {
     return this.modelMap[this.model] ?? this.model;
   }
 
+  get contextLength() {
+    const DEFAULT_OLLAMA_CONTEXT_LENGTH = 8192; // twice of https://github.com/ollama/ollama/blob/29ddfc2cab7f5a83a96c3133094f67b22e4f27d1/envconfig/config.go#L185
+    return this._contextLength ?? DEFAULT_OLLAMA_CONTEXT_LENGTH;
+  }
+
   private _getModelFileParams(
     options: CompletionOptions,
   ): OllamaModelFileParams {
diff --git a/packages/llm-info/src/providers/os.ts b/packages/llm-info/src/providers/os.ts
index 91ade3237a6..c0428ad1a02 100644
--- a/packages/llm-info/src/providers/os.ts
+++ b/packages/llm-info/src/providers/os.ts
@@ -4,5 +4,6 @@ export const OsLlms: Omit<LlmInfo, "provider">[] = [
   {
     model: "starcoder2:3b",
     displayName: "StarCoder 2 3B",
+    contextLength: 8192,
   },
 ];