diff --git a/core/src/browser/extensions/engines/AIEngine.ts b/core/src/browser/extensions/engines/AIEngine.ts
index 3a47cb4ea..ea63ffa13 100644
--- a/core/src/browser/extensions/engines/AIEngine.ts
+++ b/core/src/browser/extensions/engines/AIEngine.ts
@@ -158,17 +158,6 @@ export interface chatOptions {
 // Output for /chat will be Promise<ChatCompletion> for non-streaming
 // or Promise<AsyncIterable<ChatCompletionChunk>> for streaming
 
-// 6. /delete
-export interface deleteOptions {
-  providerId: string
-  modelId: string // The ID of the model to delete (implies finding its path)
-  modelPath?: string // Optionally, direct path can be provided
-}
-export interface deleteResult {
-  success: boolean
-  error?: string
-}
-
 // 7. /import
 export interface ImportOptions {
   [key: string]: any
@@ -226,7 +215,7 @@ export abstract class AIEngine extends BaseExtension {
   /**
    * Deletes a model
    */
-  abstract delete(opts: deleteOptions): Promise<deleteResult>
+  abstract delete(modelId: string): Promise<void>
 
   /**
    * Imports a model
diff --git a/extensions/llamacpp-extension/src/index.ts b/extensions/llamacpp-extension/src/index.ts
index 77257f17e..f561cc3d8 100644
--- a/extensions/llamacpp-extension/src/index.ts
+++ b/extensions/llamacpp-extension/src/index.ts
@@ -21,8 +21,6 @@ import {
   chatOptions,
   chatCompletion,
   chatCompletionChunk,
-  deleteOptions,
-  deleteResult,
   ImportOptions,
   chatCompletionRequest,
   events,
@@ -35,6 +33,11 @@ interface DownloadItem {
   save_path: string
 }
 
+interface ModelConfig {
+  model_path: string
+  mmproj_path?: string
+}
+
 /**
  * Helper to convert GGUF model filename to a more structured ID/name
  * Example: "mistral-7b-instruct-v0.2.Q4_K_M.gguf" -> { baseModelId: "mistral-7b-instruct-v0.2", quant: "Q4_K_M" }
@@ -59,6 +62,15 @@ function parseGGUFFileName(filename: string): {
  * The class provides methods for initializing and stopping a model, and for making inference requests.
  * It also subscribes to events emitted by the @janhq/core package and handles new message requests.
  */
+
+// Folder structure for downloaded models:
+// <Jan's data folder>/models/llamacpp/<modelId>
+//  - model.yml (required)
+//  - model.gguf (optional, present if downloaded from URL)
+//  - mmproj.gguf (optional, present if mmproj exists and it was downloaded from URL)
+//
+// Contents of model.yml can be found in ModelConfig interface
+
 export default class llamacpp_extension extends AIEngine {
   provider: string = 'llamacpp'
   readonly providerId: string = 'llamacpp'
@@ -155,15 +167,10 @@ export default class llamacpp_extension extends AIEngine {
 
     // TODO: check if files are valid GGUF files
 
+    const modelConfig = { model_path: modelPath, mmproj_path: mmprojPath } as ModelConfig
     await invoke<void>(
       'write_yaml',
-      {
-        data: {
-          model_path: modelPath,
-          mmproj_path: mmprojPath,
-        },
-        savePath: `${modelDir}/model.yml`,
-      },
+      { data: modelConfig, savePath: `${modelDir}/model.yml` },
     )
   }
 
@@ -430,8 +437,14 @@ export default class llamacpp_extension extends AIEngine {
     return (await response.json()) as chatCompletion
   }
 
-  override async delete(opts: deleteOptions): Promise<deleteResult> {
-    throw new Error('method not implemented yet')
+  override async delete(modelId: string): Promise<void> {
+    const modelDir = await joinPath([this.modelsBasePath, this.provider, modelId])
+
+    if (!(await fs.existsSync(await joinPath([modelDir, 'model.yml'])))) {
+      throw new Error(`Model ${modelId} does not exist`)
+    }
+
+    await fs.rm(modelDir)
   }
 
   // Optional method for direct client access