diff --git a/client/src/hooks/Input/useQueryParams.ts b/client/src/hooks/Input/useQueryParams.ts
index 7f2860ce5b..53bd4bc9ae 100644
--- a/client/src/hooks/Input/useQueryParams.ts
+++ b/client/src/hooks/Input/useQueryParams.ts
@@ -95,7 +95,7 @@ export default function useQueryParams({
   const settingsTimeoutRef = useRef<ReturnType<typeof setTimeout> | null>(null);
 
   const methods = useChatFormContext();
-  const [searchParams] = useSearchParams();
+  const [searchParams, setSearchParams] = useSearchParams();
   const getDefaultConversation = useDefaultConvo();
   const modularChat = useRecoilValue(store.modularChat);
   const availableTools = useRecoilValue(store.availableTools);
@@ -332,6 +332,12 @@ export default function useQueryParams({
 
       /** Mark processing as complete and clean up as needed */
       const success = () => {
+        const currentParams = new URLSearchParams(searchParams.toString());
+        currentParams.delete('prompt');
+        currentParams.delete('q');
+        currentParams.delete('submit');
+
+        setSearchParams(currentParams, { replace: true });
         processedRef.current = true;
         console.log('Parameters processed successfully');
         clearInterval(intervalId);
@@ -407,6 +413,7 @@ export default function useQueryParams({
     newQueryConvo,
     newConversation,
     submitMessage,
+    setSearchParams,
     queryClient,
     processSubmission,
   ]);
diff --git a/client/src/store/families.ts b/client/src/store/families.ts
index 786a415d46..37e2eaa3d2 100644
--- a/client/src/store/families.ts
+++ b/client/src/store/families.ts
@@ -14,7 +14,8 @@ import { LocalStorageKeys, Constants } from 'librechat-data-provider';
 import type { TMessage, TPreset, TConversation, TSubmission } from 'librechat-data-provider';
 import type { TOptionSettings, ExtendedFile } from '~/common';
 import { useSetConvoContext } from '~/Providers/SetConvoContext';
-import { storeEndpointSettings, logger } from '~/utils';
+import { storeEndpointSettings, logger, createChatSearchParams } from '~/utils';
+import { createSearchParams } from 'react-router-dom';
 
 const latestMessageKeysAtom = atom<(string | number)[]>({
   key: 'latestMessageKeys',
@@ -73,9 +74,9 @@ const conversationByIndex = atomFamily<TConversation | null, string | number>({
   default: null,
   effects: [
     ({ onSet, node }) => {
-      onSet(async (newValue) => {
+      onSet(async (newValue, oldValue) => {
         const index = Number(node.key.split('__')[1]);
-        logger.log('conversation', 'Setting conversation:', { index, newValue });
+        logger.log('conversation', 'Setting conversation:', { index, newValue, oldValue });
         if (newValue?.assistant_id != null && newValue.assistant_id) {
           localStorage.setItem(
             `${LocalStorageKeys.ASST_ID_PREFIX}${index}${newValue.endpoint}`,
@@ -104,6 +105,18 @@ const conversationByIndex = atomFamily<TConversation | null, string | number>({
           `${LocalStorageKeys.LAST_CONVO_SETUP}_${index}`,
           JSON.stringify(newValue),
         );
+
+        const shouldUpdateParams =
+          newValue.createdAt === '' &&
+          JSON.stringify(newValue) !== JSON.stringify(oldValue) &&
+          (oldValue as TConversation)?.conversationId === 'new';
+
+        if (shouldUpdateParams) {
+          const newParams = createChatSearchParams(newValue);
+          const searchParams = createSearchParams(newParams);
+          const url = `${window.location.pathname}?${searchParams.toString()}`;
+          window.history.pushState({}, '', url);
+        }
       });
     },
   ] as const,
diff --git a/client/src/utils/createChatSearchParams.spec.ts b/client/src/utils/createChatSearchParams.spec.ts
new file mode 100644
index 0000000000..0ad0db73bc
--- /dev/null
+++ b/client/src/utils/createChatSearchParams.spec.ts
@@ -0,0 +1,363 @@
+import { EModelEndpoint, Constants } from 'librechat-data-provider';
+import type { TConversation, TPreset } from 'librechat-data-provider';
+import createChatSearchParams from './createChatSearchParams';
+
+describe('createChatSearchParams', () => {
+  describe('conversation inputs', () => {
+    it('handles basic conversation properties', () => {
+      const conversation: Partial<TConversation> = {
+        endpoint: EModelEndpoint.openAI,
+        model: 'gpt-4',
+        temperature: 0.7,
+      };
+
+      const result = createChatSearchParams(conversation as TConversation);
+      expect(result.get('endpoint')).toBe(EModelEndpoint.openAI);
+      expect(result.get('model')).toBe('gpt-4');
+      expect(result.get('temperature')).toBe('0.7');
+    });
+
+    it('applies only the endpoint property when other conversation fields are absent', () => {
+      const endpointOnly = createChatSearchParams({
+        endpoint: EModelEndpoint.openAI,
+      } as TConversation);
+      expect(endpointOnly.get('endpoint')).toBe(EModelEndpoint.openAI);
+      expect(endpointOnly.has('model')).toBe(false);
+      expect(endpointOnly.has('endpoint')).toBe(true);
+    });
+
+    it('applies only the model property when other conversation fields are absent', () => {
+      const modelOnly = createChatSearchParams({ model: 'gpt-4' } as TConversation);
+      expect(modelOnly.has('endpoint')).toBe(false);
+      expect(modelOnly.get('model')).toBe('gpt-4');
+      expect(modelOnly.has('model')).toBe(true);
+    });
+
+    it('includes assistant_id when endpoint is assistants', () => {
+      const withAssistantId = createChatSearchParams({
+        endpoint: EModelEndpoint.assistants,
+        model: 'gpt-4',
+        assistant_id: 'asst_123',
+        temperature: 0.7,
+      } as TConversation);
+
+      expect(withAssistantId.get('assistant_id')).toBe('asst_123');
+      expect(withAssistantId.has('endpoint')).toBe(false);
+      expect(withAssistantId.has('model')).toBe(false);
+      expect(withAssistantId.has('temperature')).toBe(false);
+    });
+
+    it('includes agent_id when endpoint is agents', () => {
+      const withAgentId = createChatSearchParams({
+        endpoint: EModelEndpoint.agents,
+        model: 'gpt-4',
+        agent_id: 'agent_123',
+        temperature: 0.7,
+      } as TConversation);
+
+      expect(withAgentId.get('agent_id')).toBe('agent_123');
+      expect(withAgentId.has('endpoint')).toBe(false);
+      expect(withAgentId.has('model')).toBe(false);
+      expect(withAgentId.has('temperature')).toBe(false);
+    });
+
+    it('excludes all parameters except assistant_id when endpoint is assistants', () => {
+      const withAssistantId = createChatSearchParams({
+        endpoint: EModelEndpoint.assistants,
+        model: 'gpt-4',
+        assistant_id: 'asst_123',
+        temperature: 0.7,
+      } as TConversation);
+
+      expect(withAssistantId.get('assistant_id')).toBe('asst_123');
+      expect(withAssistantId.has('endpoint')).toBe(false);
+      expect(withAssistantId.has('model')).toBe(false);
+      expect(withAssistantId.has('temperature')).toBe(false);
+      expect([...withAssistantId.entries()].length).toBe(1);
+    });
+
+    it('excludes all parameters except agent_id when endpoint is agents', () => {
+      const withAgentId = createChatSearchParams({
+        endpoint: EModelEndpoint.agents,
+        model: 'gpt-4',
+        agent_id: 'agent_123',
+        temperature: 0.7,
+      } as TConversation);
+
+      expect(withAgentId.get('agent_id')).toBe('agent_123');
+      expect(withAgentId.has('endpoint')).toBe(false);
+      expect(withAgentId.has('model')).toBe(false);
+      expect(withAgentId.has('temperature')).toBe(false);
+      expect([...withAgentId.entries()].length).toBe(1);
+    });
+
+    it('returns empty params when agent endpoint has no agent_id', () => {
+      const result = createChatSearchParams({
+        endpoint: EModelEndpoint.agents,
+        model: 'gpt-4',
+        temperature: 0.7,
+      } as TConversation);
+
+      expect(result.toString()).toBe('');
+      expect([...result.entries()].length).toBe(0);
+    });
+
+    it('returns empty params when assistants endpoint has no assistant_id', () => {
+      const result = createChatSearchParams({
+        endpoint: EModelEndpoint.assistants,
+        model: 'gpt-4',
+        temperature: 0.7,
+      } as TConversation);
+
+      expect(result.toString()).toBe('');
+      expect([...result.entries()].length).toBe(0);
+    });
+
+    it('ignores agent_id when it matches EPHEMERAL_AGENT_ID', () => {
+      const result = createChatSearchParams({
+        endpoint: EModelEndpoint.agents,
+        model: 'gpt-4',
+        agent_id: Constants.EPHEMERAL_AGENT_ID,
+        temperature: 0.7,
+      } as TConversation);
+
+      // The agent_id is ignored but other params are still included
+      expect(result.has('agent_id')).toBe(false);
+      expect(result.get('endpoint')).toBe(EModelEndpoint.agents);
+      expect(result.get('model')).toBe('gpt-4');
+      expect(result.get('temperature')).toBe('0.7');
+    });
+
+    it('handles stop arrays correctly by joining with commas', () => {
+      const withStopArray = createChatSearchParams({
+        endpoint: EModelEndpoint.openAI,
+        model: 'gpt-4',
+        stop: ['stop1', 'stop2'],
+      } as TConversation);
+
+      expect(withStopArray.get('endpoint')).toBe(EModelEndpoint.openAI);
+      expect(withStopArray.get('model')).toBe('gpt-4');
+      expect(withStopArray.get('stop')).toBe('stop1,stop2');
+    });
+
+    it('filters out non-supported array properties', () => {
+      const withOtherArray = createChatSearchParams({
+        endpoint: EModelEndpoint.openAI,
+        model: 'gpt-4',
+        otherArrayProp: ['value1', 'value2'],
+      } as any);
+
+      expect(withOtherArray.get('endpoint')).toBe(EModelEndpoint.openAI);
+      expect(withOtherArray.get('model')).toBe('gpt-4');
+      expect(withOtherArray.has('otherArrayProp')).toBe(false);
+    });
+
+    it('includes empty arrays in output params', () => {
+      const result = createChatSearchParams({
+        endpoint: EModelEndpoint.openAI,
+        stop: [],
+      });
+
+      expect(result.get('endpoint')).toBe(EModelEndpoint.openAI);
+      expect(result.has('stop')).toBe(true);
+      expect(result.get('stop')).toBe('');
+    });
+
+    it('handles non-stop arrays correctly in paramMap', () => {
+      const conversation: any = {
+        endpoint: EModelEndpoint.openAI,
+        model: 'gpt-4',
+        top_p: ['0.7', '0.8'],
+      };
+
+      const result = createChatSearchParams(conversation);
+
+      const expectedJson = JSON.stringify(['0.7', '0.8']);
+      expect(result.get('top_p')).toBe(expectedJson);
+      expect(result.get('endpoint')).toBe(EModelEndpoint.openAI);
+      expect(result.get('model')).toBe('gpt-4');
+    });
+
+    it('includes empty non-stop arrays as serialized empty arrays', () => {
+      const result = createChatSearchParams({
+        endpoint: EModelEndpoint.openAI,
+        model: 'gpt-4',
+        temperature: 0.7,
+        top_p: [],
+      } as any);
+
+      expect(result.get('endpoint')).toBe(EModelEndpoint.openAI);
+      expect(result.get('model')).toBe('gpt-4');
+      expect(result.get('temperature')).toBe('0.7');
+      expect(result.has('top_p')).toBe(true);
+      expect(result.get('top_p')).toBe('[]');
+    });
+
+    it('excludes parameters with null or undefined values from the output', () => {
+      const result = createChatSearchParams({
+        endpoint: EModelEndpoint.openAI,
+        model: 'gpt-4',
+        temperature: 0.7,
+        top_p: undefined,
+        presence_penalty: undefined,
+        frequency_penalty: null,
+      } as any);
+
+      expect(result.get('endpoint')).toBe(EModelEndpoint.openAI);
+      expect(result.get('model')).toBe('gpt-4');
+      expect(result.get('temperature')).toBe('0.7');
+      expect(result.has('top_p')).toBe(false);
+      expect(result.has('presence_penalty')).toBe(false);
+      expect(result.has('frequency_penalty')).toBe(false);
+      expect(result).toBeDefined();
+    });
+
+    it('handles float parameter values correctly', () => {
+      const result = createChatSearchParams({
+        endpoint: EModelEndpoint.google,
+        model: 'gemini-pro',
+        frequency_penalty: 0.25,
+        temperature: 0.75,
+      });
+
+      expect(result.get('endpoint')).toBe(EModelEndpoint.google);
+      expect(result.get('model')).toBe('gemini-pro');
+      expect(result.get('frequency_penalty')).toBe('0.25');
+      expect(result.get('temperature')).toBe('0.75');
+    });
+
+    it('handles integer parameter values correctly', () => {
+      const result = createChatSearchParams({
+        endpoint: EModelEndpoint.google,
+        model: 'gemini-pro',
+        topK: 40,
+        maxOutputTokens: 2048,
+      });
+
+      expect(result.get('endpoint')).toBe(EModelEndpoint.google);
+      expect(result.get('model')).toBe('gemini-pro');
+      expect(result.get('topK')).toBe('40');
+      expect(result.get('maxOutputTokens')).toBe('2048');
+    });
+  });
+
+  describe('preset inputs', () => {
+    it('handles preset objects correctly', () => {
+      const preset: Partial<TPreset> = {
+        endpoint: EModelEndpoint.google,
+        model: 'gemini-pro',
+        temperature: 0.5,
+        topP: 0.8,
+      };
+
+      const result = createChatSearchParams(preset as TPreset);
+      expect(result.get('endpoint')).toBe(EModelEndpoint.google);
+      expect(result.get('model')).toBe('gemini-pro');
+      expect(result.get('temperature')).toBe('0.5');
+      expect(result.get('topP')).toBe('0.8');
+    });
+
+    it('returns only spec param when spec property is present', () => {
+      const preset: Partial<TPreset> = {
+        endpoint: EModelEndpoint.google,
+        model: 'gemini-pro',
+        temperature: 0.5,
+        spec: 'special_spec',
+      };
+
+      const result = createChatSearchParams(preset as TPreset);
+      expect(result.get('spec')).toBe('special_spec');
+      expect(result.has('endpoint')).toBe(false);
+      expect(result.has('model')).toBe(false);
+      expect(result.has('temperature')).toBe(false);
+      expect([...result.entries()].length).toBe(1);
+    });
+  });
+
+  describe('record inputs', () => {
+    it('includes allowed parameters from Record inputs', () => {
+      const record: Record<string, any> = {
+        endpoint: EModelEndpoint.anthropic,
+        model: 'claude-2',
+        temperature: '0.8',
+        top_p: '0.95',
+        extraParam: 'should-not-be-included',
+        invalidParam1: 'value1',
+        invalidParam2: 'value2',
+      };
+
+      const result = createChatSearchParams(record);
+      expect(result.get('endpoint')).toBe(EModelEndpoint.anthropic);
+      expect(result.get('model')).toBe('claude-2');
+      expect(result.get('temperature')).toBe('0.8');
+      expect(result.get('top_p')).toBe('0.95');
+    });
+
+    it('excludes disallowed parameters from Record inputs', () => {
+      const record: Record<string, any> = {
+        endpoint: EModelEndpoint.anthropic,
+        model: 'claude-2',
+        extraParam: 'should-not-be-included',
+        invalidParam1: 'value1',
+        invalidParam2: 'value2',
+      };
+
+      const result = createChatSearchParams(record);
+      expect(result.has('extraParam')).toBe(false);
+      expect(result.has('invalidParam1')).toBe(false);
+      expect(result.has('invalidParam2')).toBe(false);
+      expect(result.toString().includes('invalidParam')).toBe(false);
+      expect(result.toString().includes('extraParam')).toBe(false);
+    });
+
+    it('includes valid values from Record inputs', () => {
+      const record: Record<string, any> = {
+        temperature: '0.7',
+        top_p: null,
+        frequency_penalty: undefined,
+      };
+
+      const result = createChatSearchParams(record);
+      expect(result.get('temperature')).toBe('0.7');
+    });
+
+    it('excludes null or undefined values from Record inputs', () => {
+      const record: Record<string, any> = {
+        temperature: '0.7',
+        top_p: null,
+        frequency_penalty: undefined,
+      };
+
+      const result = createChatSearchParams(record);
+      expect(result.has('top_p')).toBe(false);
+      expect(result.has('frequency_penalty')).toBe(false);
+    });
+
+    it('handles generic object without endpoint or model properties', () => {
+      const customObject = {
+        temperature: '0.5',
+        top_p: '0.7',
+        customProperty: 'value',
+      };
+
+      const result = createChatSearchParams(customObject);
+      expect(result.get('temperature')).toBe('0.5');
+      expect(result.get('top_p')).toBe('0.7');
+      expect(result.has('customProperty')).toBe(false);
+    });
+  });
+
+  describe('edge cases', () => {
+    it('returns an empty URLSearchParams instance when input is null', () => {
+      const result = createChatSearchParams(null);
+      expect(result.toString()).toBe('');
+      expect(result instanceof URLSearchParams).toBe(true);
+    });
+
+    it('returns an empty URLSearchParams instance for an empty object input', () => {
+      const result = createChatSearchParams({});
+      expect(result.toString()).toBe('');
+      expect(result instanceof URLSearchParams).toBe(true);
+    });
+  });
+});
diff --git a/client/src/utils/createChatSearchParams.ts b/client/src/utils/createChatSearchParams.ts
new file mode 100644
index 0000000000..a25ce284cf
--- /dev/null
+++ b/client/src/utils/createChatSearchParams.ts
@@ -0,0 +1,93 @@
+import { isAgentsEndpoint, isAssistantsEndpoint, Constants } from 'librechat-data-provider';
+import type { TConversation, TPreset } from 'librechat-data-provider';
+
+export default function createChatSearchParams(
+  input: TConversation | TPreset | Record<string, string> | null,
+): URLSearchParams {
+  if (input == null) {
+    return new URLSearchParams();
+  }
+
+  const params = new URLSearchParams();
+
+  const allowedParams = [
+    'endpoint',
+    'model',
+    'temperature',
+    'presence_penalty',
+    'frequency_penalty',
+    'stop',
+    'top_p',
+    'max_tokens',
+    'topP',
+    'topK',
+    'maxOutputTokens',
+    'promptCache',
+    'region',
+    'maxTokens',
+    'agent_id',
+    'assistant_id',
+  ];
+
+  if (input && typeof input === 'object' && !('endpoint' in input) && !('model' in input)) {
+    Object.entries(input as Record<string, string>).forEach(([key, value]) => {
+      if (value != null && allowedParams.includes(key)) {
+        params.set(key, value);
+      }
+    });
+    return params;
+  }
+
+  const conversation = input as TConversation | TPreset;
+  const endpoint = conversation.endpoint;
+  if (conversation.spec) {
+    return new URLSearchParams({ spec: conversation.spec });
+  }
+  if (
+    isAgentsEndpoint(endpoint) &&
+    conversation.agent_id &&
+    conversation.agent_id !== Constants.EPHEMERAL_AGENT_ID
+  ) {
+    return new URLSearchParams({ agent_id: String(conversation.agent_id) });
+  } else if (isAssistantsEndpoint(endpoint) && conversation.assistant_id) {
+    return new URLSearchParams({ assistant_id: String(conversation.assistant_id) });
+  } else if (isAgentsEndpoint(endpoint) && !conversation.agent_id) {
+    return params;
+  } else if (isAssistantsEndpoint(endpoint) && !conversation.assistant_id) {
+    return params;
+  }
+
+  if (endpoint) {
+    params.set('endpoint', endpoint);
+  }
+  if (conversation.model) {
+    params.set('model', conversation.model);
+  }
+
+  const paramMap = {
+    temperature: conversation.temperature,
+    presence_penalty: conversation.presence_penalty,
+    frequency_penalty: conversation.frequency_penalty,
+    stop: conversation.stop,
+    top_p: conversation.top_p,
+    max_tokens: conversation.max_tokens,
+    topP: conversation.topP,
+    topK: conversation.topK,
+    maxOutputTokens: conversation.maxOutputTokens,
+    promptCache: conversation.promptCache,
+    region: conversation.region,
+    maxTokens: conversation.maxTokens,
+  };
+
+  return Object.entries(paramMap).reduce((params, [key, value]) => {
+    if (value != null) {
+      if (Array.isArray(value)) {
+        params.set(key, key === 'stop' ? value.join(',') : JSON.stringify(value));
+      } else {
+        params.set(key, String(value));
+      }
+    }
+
+    return params;
+  }, params);
+}
diff --git a/client/src/utils/index.ts b/client/src/utils/index.ts
index 1a295837f4..7518aeeb11 100644
--- a/client/src/utils/index.ts
+++ b/client/src/utils/index.ts
@@ -22,6 +22,7 @@ export { default as getLoginError } from './getLoginError';
 export { default as cleanupPreset } from './cleanupPreset';
 export { default as buildDefaultConvo } from './buildDefaultConvo';
 export { default as getDefaultEndpoint } from './getDefaultEndpoint';
+export { default as createChatSearchParams } from './createChatSearchParams';
 
 export const languages = [
   'java',