diff --git a/src/api/providers/openai-native.ts b/src/api/providers/openai-native.ts
index bab2673443..e39d02b486 100644
--- a/src/api/providers/openai-native.ts
+++ b/src/api/providers/openai-native.ts
@@ -1,15 +1,11 @@
 import { Anthropic } from "@anthropic-ai/sdk"
 import OpenAI from "openai"
-import * as fsSync from "fs"
-import * as pathSync from "path"
-import * as osSync from "os"
 
 import {
 	type ModelInfo,
 	openAiNativeDefaultModelId,
 	OpenAiNativeModelId,
-	openAiNativeModels,
-	validateModelInfoRecord,
+	getOpenAiNativeModels,
 	OPENAI_NATIVE_DEFAULT_TEMPERATURE,
 	GPT5_DEFAULT_TEMPERATURE,
 	type ReasoningEffort,
@@ -35,50 +31,6 @@ export type OpenAiNativeModel = ReturnType<OpenAiNativeHandler["getModel"]>
 // Constants for model identification
 const GPT5_MODEL_PREFIX = "gpt-5"
 
-/**
- * Host-only sync loader for OpenAI Native models merged with ~/.roo overrides.
- * Avoids the browser-safe loader in @roo-code/types which may not resolve extras in the extension host bundle.
- */
-function loadMergedOpenAiNativeModelsOnHostSync(): Record<string, ModelInfo> {
-	try {
-		// 1) Inline JSON override
-		let extras: Record<string, ModelInfo> = {}
-		try {
-			const inline = process.env?.ROO_OPENAI_NATIVE_MODELS_JSON
-			if (inline) {
-				const parsed = JSON.parse(inline)
-				if (parsed && typeof parsed === "object" && !Array.isArray(parsed)) {
-					extras = validateModelInfoRecord(parsed)
-				}
-			}
-		} catch {
-			// ignore
-		}
-
-		// 2) File-based load when no inline provided
-		if (Object.keys(extras).length === 0) {
-			try {
-				const customPath =
-					process.env.ROO_OPENAI_NATIVE_MODELS_PATH ||
-					pathSync.join(osSync.homedir(), ".roo", "models", "openai-native.json")
-				if (customPath && fsSync.existsSync(customPath)) {
-					const raw = fsSync.readFileSync(customPath, "utf8")
-					const parsed = JSON.parse(raw)
-					if (parsed && typeof parsed === "object" && !Array.isArray(parsed)) {
-						extras = validateModelInfoRecord(parsed)
-					}
-				}
-			} catch {
-				// ignore file errors
-			}
-		}
-
-		return { ...openAiNativeModels, ...extras } as Record<string, ModelInfo>
-	} catch {
-		return openAiNativeModels as Record<string, ModelInfo>
-	}
-}
-
 export class OpenAiNativeHandler extends BaseProvider implements SingleCompletionHandler {
 	protected options: ApiHandlerOptions
 	private client: OpenAI
@@ -1270,7 +1222,7 @@ export class OpenAiNativeHandler extends BaseProvider implements SingleCompletio
 		const modelId = this.options.apiModelId
 
 		// Get merged models (built-in + user-defined from ~/.roo/models/openai-native.json)
-		const allModels = loadMergedOpenAiNativeModelsOnHostSync()
+		const allModels = getOpenAiNativeModels()
 
 		let id = modelId && modelId in allModels ? (modelId as OpenAiNativeModelId) : openAiNativeDefaultModelId
 
diff --git a/src/core/webview/webviewMessageHandler.ts b/src/core/webview/webviewMessageHandler.ts
index 29f9f8a6a9..8432f5b484 100644
--- a/src/core/webview/webviewMessageHandler.ts
+++ b/src/core/webview/webviewMessageHandler.ts
@@ -11,7 +11,7 @@ import {
 	type ClineMessage,
 	type TelemetrySetting,
 	type ModelInfo,
-	validateModelInfoRecord,
+	getOpenAiNativeModels,
 	TelemetryEventName,
 	UserSettingsConfig,
 	DEFAULT_CHECKPOINT_TIMEOUT_SECONDS,
@@ -55,7 +55,6 @@ import { getWorkspacePath } from "../../utils/path"
 import { Mode, defaultModeSlug } from "../../shared/modes"
 import { getModels, flushModels } from "../../api/providers/fetchers/modelCache"
 import { GetModelsOptions } from "../../shared/api"
-import { openAiNativeModels } from "@roo-code/types"
 import { generateSystemPrompt } from "./generateSystemPrompt"
 import { getCommand } from "../../utils/commands"
 
@@ -100,51 +99,6 @@ export const webviewMessageHandler = async (
 		)
 	}
 
-	/**
-	 * Host-only loader: merge built-in OpenAI native models with user additions from:
-	 * - ROO_OPENAI_NATIVE_MODELS_JSON (JSON string)
-	 * - ROO_OPENAI_NATIVE_MODELS_PATH or ~/.roo/models/openai-native.json
-	 * Returns the merged models record.
-	 */
-	async function getMergedOpenAiNativeModelsOnHost(): Promise<Record<string, ModelInfo>> {
-		try {
-			// 1) Env JSON override
-			let extras: Record<string, any> = {}
-			const inline = process.env?.ROO_OPENAI_NATIVE_MODELS_JSON
-			if (inline) {
-				try {
-					const parsed = JSON.parse(inline)
-					if (parsed && typeof parsed === "object" && !Array.isArray(parsed)) {
-						extras = validateModelInfoRecord(parsed)
-					}
-				} catch {
-					// ignore malformed env json
-				}
-			}
-
-			// 2) File-based
-			if (Object.keys(extras).length === 0) {
-				const customPath =
-					process.env.ROO_OPENAI_NATIVE_MODELS_PATH ||
-					path.join(os.homedir(), ".roo", "models", "openai-native.json")
-				try {
-					const raw = await fs.readFile(customPath, "utf8")
-					const parsed = JSON.parse(raw)
-					if (parsed && typeof parsed === "object" && !Array.isArray(parsed)) {
-						extras = validateModelInfoRecord(parsed)
-					}
-				} catch {
-					// missing/invalid file: ignore
-				}
-			}
-
-			const merged = { ...openAiNativeModels, ...extras }
-			return merged as Record<string, ModelInfo>
-		} catch {
-			return openAiNativeModels as Record<string, ModelInfo>
-		}
-	}
-
 	/**
 	 * Removes the target message and all subsequent messages
 	 */
@@ -1031,7 +985,7 @@ export const webviewMessageHandler = async (
 		case "requestOpenAiNativeModels": {
 			// Return merged built-ins + user-defined from ~/.roo/models/openai-native.json
 			try {
-				const mergedModels = await getMergedOpenAiNativeModelsOnHost()
+				const mergedModels = getOpenAiNativeModels()
 				provider.postMessageToWebview({ type: "openAiNativeModels", openAiNativeModels: mergedModels })
 			} catch (error) {
 				console.error("Failed to load OpenAI Native models:", error)