fix: deep research model only support medium search context and reasoning effort (#10676)

Co-authored-by: ABucket <abucket@github.com>
(cherry picked from commit 6f63eefa86)

src/renderer/src/aiCore/legacy/clients/openai/OpenAIApiClient.ts

@@ -12,6 +12,7 @@ import {
   isGPT5SeriesModel,
   isGrokReasoningModel,
   isNotSupportSystemMessageModel,
+  isOpenAIDeepResearchModel,
   isOpenAIOpenWeightModel,
   isOpenAIReasoningModel,
   isQwenAlwaysThinkModel,
@@ -125,6 +126,12 @@ export class OpenAIAPIClient extends OpenAIBaseClient<
       return {}
     }
 
+    if (isOpenAIDeepResearchModel(model)) {
+      return {
+        reasoning_effort: 'medium'
+      }
+    }
+
     const reasoningEffort = assistant?.settings?.reasoning_effort
 
     if (isSupportedThinkingTokenZhipuModel(model)) {

src/renderer/src/aiCore/prepareParams/parameterBuilder.ts

@@ -127,7 +127,7 @@ export async function buildStreamTextParams(
   let webSearchPluginConfig: WebSearchPluginConfig | undefined = undefined
   if (enableWebSearch) {
     if (isBaseProvider(aiSdkProviderId)) {
-      webSearchPluginConfig = buildProviderBuiltinWebSearchConfig(aiSdkProviderId, webSearchConfig)
+      webSearchPluginConfig = buildProviderBuiltinWebSearchConfig(aiSdkProviderId, webSearchConfig, model)
     }
     if (!tools) {
       tools = {}

src/renderer/src/aiCore/utils/reasoning.ts

@@ -9,6 +9,7 @@ import {
   isDoubaoThinkingAutoModel,
   isGrok4FastReasoningModel,
   isGrokReasoningModel,
+  isOpenAIDeepResearchModel,
   isOpenAIReasoningModel,
   isQwenAlwaysThinkModel,
   isQwenReasoningModel,
@@ -44,6 +45,12 @@ export function getReasoningEffort(assistant: Assistant, model: Model): Reasonin
   if (!isReasoningModel(model)) {
     return {}
   }
+
+  if (isOpenAIDeepResearchModel(model)) {
+    return {
+      reasoning_effort: 'medium'
+    }
+  }
   const reasoningEffort = assistant?.settings?.reasoning_effort
 
   if (!reasoningEffort) {
@@ -317,7 +324,11 @@ export function getOpenAIReasoningParams(assistant: Assistant, model: Model): Re
     reasoningSummary = summaryText
   }
 
-  const reasoningEffort = assistant?.settings?.reasoning_effort
+  let reasoningEffort = assistant?.settings?.reasoning_effort
+
+  if (isOpenAIDeepResearchModel(model)) {
+    reasoningEffort = 'medium'
+  }
 
   if (!reasoningEffort) {
     return {}

src/renderer/src/aiCore/utils/websearch.ts

@@ -4,7 +4,7 @@ import {
   WebSearchPluginConfig
 } from '@cherrystudio/ai-core/core/plugins/built-in/webSearchPlugin/helper'
 import { BaseProviderId } from '@cherrystudio/ai-core/provider'
-import { isOpenAIWebSearchChatCompletionOnlyModel } from '@renderer/config/models'
+import { isOpenAIDeepResearchModel, isOpenAIWebSearchChatCompletionOnlyModel } from '@renderer/config/models'
 import { CherryWebSearchConfig } from '@renderer/store/websearch'
 import { Model } from '@renderer/types'
 import { mapRegexToPatterns } from '@renderer/utils/blacklistMatchPattern'
@@ -43,20 +43,27 @@ function mapMaxResultToOpenAIContextSize(maxResults: number): OpenAISearchConfig
 
 export function buildProviderBuiltinWebSearchConfig(
   providerId: BaseProviderId,
-  webSearchConfig: CherryWebSearchConfig
+  webSearchConfig: CherryWebSearchConfig,
+  model?: Model
 ): WebSearchPluginConfig | undefined {
   switch (providerId) {
     case 'openai': {
+      const searchContextSize = isOpenAIDeepResearchModel(model)
+        ? 'medium'
+        : mapMaxResultToOpenAIContextSize(webSearchConfig.maxResults)
       return {
         openai: {
-          searchContextSize: mapMaxResultToOpenAIContextSize(webSearchConfig.maxResults)
+          searchContextSize
         }
       }
     }
     case 'openai-chat': {
+      const searchContextSize = isOpenAIDeepResearchModel(model)
+        ? 'medium'
+        : mapMaxResultToOpenAIContextSize(webSearchConfig.maxResults)
       return {
         'openai-chat': {
-          searchContextSize: mapMaxResultToOpenAIContextSize(webSearchConfig.maxResults)
+          searchContextSize
         }
       }
     }

src/renderer/src/config/models/reasoning.ts

@@ -10,7 +10,7 @@ import { getLowerBaseModelName, isUserSelectedModelType } from '@renderer/utils'
 import { isEmbeddingModel, isRerankModel } from './embedding'
 import { isGPT5SeriesModel } from './utils'
 import { isTextToImageModel } from './vision'
-import { GEMINI_FLASH_MODEL_REGEX } from './websearch'
+import { GEMINI_FLASH_MODEL_REGEX, isOpenAIDeepResearchModel } from './websearch'
 
 // Reasoning models
 export const REASONING_REGEX =
@@ -21,6 +21,7 @@ export const REASONING_REGEX =
 export const MODEL_SUPPORTED_REASONING_EFFORT: ReasoningEffortConfig = {
   default: ['low', 'medium', 'high'] as const,
   o: ['low', 'medium', 'high'] as const,
+  openai_deep_research: ['medium'] as const,
   gpt5: ['minimal', 'low', 'medium', 'high'] as const,
   gpt5_codex: ['low', 'medium', 'high'] as const,
   grok: ['low', 'high'] as const,
@@ -42,6 +43,7 @@ export const MODEL_SUPPORTED_REASONING_EFFORT: ReasoningEffortConfig = {
 export const MODEL_SUPPORTED_OPTIONS: ThinkingOptionConfig = {
   default: ['off', ...MODEL_SUPPORTED_REASONING_EFFORT.default] as const,
   o: MODEL_SUPPORTED_REASONING_EFFORT.o,
+  openai_deep_research: MODEL_SUPPORTED_REASONING_EFFORT.openai_deep_research,
   gpt5: [...MODEL_SUPPORTED_REASONING_EFFORT.gpt5] as const,
   gpt5_codex: MODEL_SUPPORTED_REASONING_EFFORT.gpt5_codex,
   grok: MODEL_SUPPORTED_REASONING_EFFORT.grok,
@@ -62,6 +64,9 @@ export const MODEL_SUPPORTED_OPTIONS: ThinkingOptionConfig = {
 export const getThinkModelType = (model: Model): ThinkingModelType => {
   let thinkingModelType: ThinkingModelType = 'default'
   const modelId = getLowerBaseModelName(model.id)
+  if (isOpenAIDeepResearchModel(model)) {
+    return 'openai_deep_research'
+  }
   if (isGPT5SeriesModel(model)) {
     if (modelId.includes('codex')) {
       thinkingModelType = 'gpt5_codex'

src/renderer/src/config/models/websearch.ts

@@ -26,6 +26,22 @@ export const PERPLEXITY_SEARCH_MODELS = [
   'sonar-deep-research'
 ]
 
+const OPENAI_DEEP_RESEARCH_MODEL_REGEX = /deep[-_]?research/
+
+export function isOpenAIDeepResearchModel(model?: Model): boolean {
+  if (!model) {
+    return false
+  }
+
+  const providerId = model.provider
+  if (providerId !== 'openai' && providerId !== 'openai-chat') {
+    return false
+  }
+
+  const modelId = getLowerBaseModelName(model.id, '/')
+  return OPENAI_DEEP_RESEARCH_MODEL_REGEX.test(modelId)
+}
+
 export function isWebSearchModel(model: Model): boolean {
   if (
     !model ||

src/renderer/src/types/index.ts

@@ -75,6 +75,7 @@ export type AssistantSettingCustomParameters = {
 const ThinkModelTypes = [
   'default',
   'o',
+  'openai_deep_research',
   'gpt5',
   'gpt5_codex',
   'grok',