Gemini 2.5 using Claude4 system prompt (#4468)

* gemini 2.5 using claude4 prompt now

* changeset

* more lenient claude4 family check

---------

Co-authored-by: Cline Evaluation <cline@example.com>

.changeset/eighty-timers-camp.md

@@ -0,0 +1,5 @@
+---
+"claude-dev": minor
+---
+
+Optimizing cline to work for gemini 2.5 family of models

src/core/prompts/system.ts

@@ -12,14 +12,14 @@ export const SYSTEM_PROMPT = async (
 	supportsBrowserUse: boolean,
 	mcpHub: McpHub,
 	browserSettings: BrowserSettings,
-	isClaude4ModelFamily: boolean = false,
+	isNextGenModel: boolean = false,
 ) => {
 
-	if (isClaude4ModelFamily && USE_EXPERIMENTAL_CLAUDE4_FEATURES) {
+	if (isNextGenModel && USE_EXPERIMENTAL_CLAUDE4_FEATURES) {
 		return SYSTEM_PROMPT_CLAUDE4_EXPERIMENTAL(cwd, supportsBrowserUse, mcpHub, browserSettings)
 	}
 
-  if (isClaude4ModelFamily) {
+  if (isNextGenModel) {
     return SYSTEM_PROMPT_CLAUDE4(cwd, supportsBrowserUse, mcpHub, browserSettings)
   }
 

src/core/task/ToolExecutor.ts

@@ -30,7 +30,7 @@ import { ClineAskResponse } from "@shared/WebviewMessage"
 import { fixModelHtmlEscaping, removeInvalidChars } from "@utils/string"
 import { fileExistsAtPath } from "@utils/fs"
 import { formatResponse } from "../prompts/responses"
-import { isClaude4ModelFamily } from "@utils/model-utils"
+import { isClaude4ModelFamily, isGemini2dot5ModelFamily } from "@utils/model-utils"
 import { ToolResponse, USE_EXPERIMENTAL_CLAUDE4_FEATURES } from "."
 import { serializeError } from "serialize-error"
 import * as path from "path"
@@ -105,12 +105,12 @@ export class ToolExecutor {
 	) {}
 
 	private pushToolResult = (content: ToolResponse, block: ToolUse) => {
-		const isClaude4Model = isClaude4ModelFamily(this.api)
+		const isNextGenModel = isClaude4ModelFamily(this.api) || isGemini2dot5ModelFamily(this.api)
 
 		if (typeof content === "string") {
 			const resultText = content || "(tool did not return anything)"
 
-			if (isClaude4Model && USE_EXPERIMENTAL_CLAUDE4_FEATURES) {
+			if (isNextGenModel && USE_EXPERIMENTAL_CLAUDE4_FEATURES) {
 				// Claude 4 family: Use function_results format
 				this.taskState.userMessageContent.push({
 					type: "text",
@@ -472,9 +472,9 @@ export class ToolExecutor {
 
 						const currentFullJson = block.params.diff
 						// Check if we should use streaming (e.g., for specific models)
-						const isClaude4Model = isClaude4ModelFamily(this.api)
+						const isNextGenModel = isClaude4ModelFamily(this.api) || isGemini2dot5ModelFamily(this.api)
 						// Going through claude family of models
-						if (isClaude4Model && USE_EXPERIMENTAL_CLAUDE4_FEATURES && currentFullJson) {
+						if (isNextGenModel && USE_EXPERIMENTAL_CLAUDE4_FEATURES && currentFullJson) {
 							const streamingResult = await this.handleStreamingJsonReplacement(block, relPath, currentFullJson)
 
 							if (streamingResult.error) {
@@ -839,7 +839,6 @@ export class ToolExecutor {
 				}
 			}
 			case "list_files": {
-				const isClaude4Model = isClaude4ModelFamily(this.api)
 				const relDirPath: string | undefined = block.params.path
 				const recursiveRaw: string | undefined = block.params.recursive
 				const recursive = recursiveRaw?.toLowerCase() === "true"
@@ -989,7 +988,6 @@ export class ToolExecutor {
 				}
 			}
 			case "search_files": {
-				const isClaude4Model = isClaude4ModelFamily(this.api)
 				const relDirPath: string | undefined = block.params.path
 				const regex: string | undefined = block.params.regex
 				const filePattern: string | undefined = block.params.file_pattern

src/core/task/index.ts

@@ -90,7 +90,7 @@ import WorkspaceTracker from "@integrations/workspace/WorkspaceTracker"
 import { McpHub } from "@services/mcp/McpHub"
 import { isInTestMode } from "../../services/test/TestMode"
 import { processFilesIntoText } from "@integrations/misc/extract-text"
-import { isClaude4ModelFamily } from "@utils/model-utils"
+import { isClaude4ModelFamily, isGemini2dot5ModelFamily } from "@utils/model-utils"
 import { MessageStateHandler } from "./message-state"
 import { formatErrorWithStatusCode, updateApiReqMsg } from "./utils"
 import { TaskState } from "./TaskState"
@@ -1654,8 +1654,8 @@ export class Task {
 
 		const supportsBrowserUse = modelSupportsBrowserUse && !disableBrowserTool // only enable browser use if the model supports it and the user hasn't disabled it
 
-		const isClaude4Model = isClaude4ModelFamily(this.api)
-		let systemPrompt = await SYSTEM_PROMPT(cwd, supportsBrowserUse, this.mcpHub, this.browserSettings, isClaude4Model)
+		const isNextGenModel = isClaude4ModelFamily(this.api) || isGemini2dot5ModelFamily(this.api)
+		let systemPrompt = await SYSTEM_PROMPT(cwd, supportsBrowserUse, this.mcpHub, this.browserSettings, isNextGenModel)
 
 		await this.migratePreferredLanguageToolSetting()
 		const preferredLanguage = getLanguageKey(this.chatSettings.preferredLanguage as LanguageDisplay)
@@ -2223,8 +2223,8 @@ export class Task {
 							assistantMessage += chunk.text
 							// parse raw assistant message into content blocks
 							const prevLength = this.taskState.assistantMessageContent.length
-							const isClaude4Model = isClaude4ModelFamily(this.api)
-							if (isClaude4Model && USE_EXPERIMENTAL_CLAUDE4_FEATURES) {
+							const isNextGenModel = isClaude4ModelFamily(this.api) || isGemini2dot5ModelFamily(this.api)
+							if (isNextGenModel && USE_EXPERIMENTAL_CLAUDE4_FEATURES) {
 								this.taskState.assistantMessageContent = parseAssistantMessageV3(assistantMessage)
 							} else {
 								this.taskState.assistantMessageContent = parseAssistantMessageV2(assistantMessage)

src/utils/model-utils.ts

@@ -3,5 +3,13 @@ import { ApiHandler } from "@api/index"
 export function isClaude4ModelFamily(api: ApiHandler): boolean {
 	const model = api.getModel()
 	const modelId = model.id
-	return modelId.includes("sonnet-4") || modelId.includes("opus-4")
+	return (
+		modelId.includes("sonnet-4") || modelId.includes("opus-4") || modelId.includes("4-sonnet") || modelId.includes("4-opus")
+	)
+}
+
+export function isGemini2dot5ModelFamily(api: ApiHandler): boolean {
+	const model = api.getModel()
+	const modelId = model.id
+	return modelId.includes("gemini-2.5")
 }