simstudioai · Sg312 · Jan 15, 2026 · Jan 14, 2026 · Jan 14, 2026 · Jan 15, 2026
diff --git a/apps/sim/app/api/copilot/chat/route.ts b/apps/sim/app/api/copilot/chat/route.ts
@@ -52,6 +52,9 @@ const ChatMessageSchema = z.object({
       'gpt-5.1-high',
       'gpt-5-codex',
       'gpt-5.1-codex',
+      'gpt-5.2',
+      'gpt-5.2-codex',
+      'gpt-5.2-pro',
       'gpt-4o',
       'gpt-4.1',
       'o3',

diff --git a/apps/sim/app/api/copilot/user-models/route.ts b/apps/sim/app/api/copilot/user-models/route.ts
@@ -15,11 +15,14 @@ const DEFAULT_ENABLED_MODELS: Record<string, boolean> = {
   'gpt-5-medium': false,
   'gpt-5-high': false,
   'gpt-5.1-fast': false,
-  'gpt-5.1': true,
-  'gpt-5.1-medium': true,
+  'gpt-5.1': false,
+  'gpt-5.1-medium': false,
   'gpt-5.1-high': false,
   'gpt-5-codex': false,
-  'gpt-5.1-codex': true,
+  'gpt-5.1-codex': false,
+  'gpt-5.2': false,
+  'gpt-5.2-codex': true,
+  'gpt-5.2-pro': true,
   o3: true,
   'claude-4-sonnet': false,
   'claude-4.5-haiku': true,

diff --git a/...nents/panel/components/copilot/components/copilot-message/components/smooth-streaming.tsx b/...nents/panel/components/copilot/components/copilot-message/components/smooth-streaming.tsx
@@ -2,29 +2,9 @@ import { memo, useEffect, useRef, useState } from 'react'
 import CopilotMarkdownRenderer from '@/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/copilot/components/copilot-message/components/markdown-renderer'
 
 /**
- * Minimum delay between characters (fast catch-up mode)
+ * Character animation delay in milliseconds
  */
-const MIN_DELAY = 1
-
-/**
- * Maximum delay between characters (when waiting for content)
- */
-const MAX_DELAY = 12
-
-/**
- * Default delay when streaming normally
- */
-const DEFAULT_DELAY = 4
-
-/**
- * How far behind (in characters) before we speed up
- */
-const CATCH_UP_THRESHOLD = 20
-
-/**
- * How close to content before we slow down
- */
-const SLOW_DOWN_THRESHOLD = 5
+const CHARACTER_DELAY = 3
 
 /**
  * StreamingIndicator shows animated dots during message streaming
@@ -54,50 +34,21 @@ interface SmoothStreamingTextProps {
   isStreaming: boolean
 }
 
-/**
- * Calculates adaptive delay based on how far behind animation is from actual content
- *
- * @param displayedLength - Current displayed content length
- * @param totalLength - Total available content length
- * @returns Delay in milliseconds
- */
-function calculateAdaptiveDelay(displayedLength: number, totalLength: number): number {
-  const charsRemaining = totalLength - displayedLength
-
-  if (charsRemaining > CATCH_UP_THRESHOLD) {
-    // Far behind - speed up to catch up
-    // Scale from MIN_DELAY to DEFAULT_DELAY based on how far behind
-    const catchUpFactor = Math.min(1, (charsRemaining - CATCH_UP_THRESHOLD) / 50)
-    return MIN_DELAY + (DEFAULT_DELAY - MIN_DELAY) * (1 - catchUpFactor)
-  }
-
-  if (charsRemaining <= SLOW_DOWN_THRESHOLD) {
-    // Close to content edge - slow down to feel natural
-    // The closer we are, the slower we go (up to MAX_DELAY)
-    const slowFactor = 1 - charsRemaining / SLOW_DOWN_THRESHOLD
-    return DEFAULT_DELAY + (MAX_DELAY - DEFAULT_DELAY) * slowFactor
-  }
-
-  // Normal streaming speed
-  return DEFAULT_DELAY
-}
-
 /**
  * SmoothStreamingText component displays text with character-by-character animation
- * Creates a smooth streaming effect for AI responses with adaptive speed
- *
- * Uses adaptive pacing: speeds up when catching up, slows down near content edge
+ * Creates a smooth streaming effect for AI responses
  *
  * @param props - Component props
  * @returns Streaming text with smooth animation
  */
 export const SmoothStreamingText = memo(
   ({ content, isStreaming }: SmoothStreamingTextProps) => {
-    const [displayedContent, setDisplayedContent] = useState('')
+    // Initialize with full content when not streaming to avoid flash on page load
+    const [displayedContent, setDisplayedContent] = useState(() => (isStreaming ? '' : content))
     const contentRef = useRef(content)
-    const rafRef = useRef<number | null>(null)
-    const indexRef = useRef(0)
-    const lastFrameTimeRef = useRef<number>(0)
+    const timeoutRef = useRef<NodeJS.Timeout | null>(null)
+    // Initialize index based on streaming state
+    const indexRef = useRef(isStreaming ? 0 : content.length)
     const isAnimatingRef = useRef(false)
 
     useEffect(() => {
@@ -110,51 +61,42 @@ export const SmoothStreamingText = memo(
       }
 
       if (isStreaming) {
-        if (indexRef.current < content.length && !isAnimatingRef.current) {
-          isAnimatingRef.current = true
-          lastFrameTimeRef.current = performance.now()
-
-          const animateText = (timestamp: number) => {
+        if (indexRef.current < content.length) {
+          const animateText = () => {
             const currentContent = contentRef.current
             const currentIndex = indexRef.current
-            const elapsed = timestamp - lastFrameTimeRef.current
 
-            // Calculate adaptive delay based on how far behind we are
-            const delay = calculateAdaptiveDelay(currentIndex, currentContent.length)
-
-            if (elapsed >= delay) {
-              if (currentIndex < currentContent.length) {
-                const newDisplayed = currentContent.slice(0, currentIndex + 1)
-                setDisplayedContent(newDisplayed)
-                indexRef.current = currentIndex + 1
-                lastFrameTimeRef.current = timestamp
-              }
-            }
-
-            if (indexRef.current < currentContent.length) {
-              rafRef.current = requestAnimationFrame(animateText)
+            if (currentIndex < currentContent.length) {
+              const newDisplayed = currentContent.slice(0, currentIndex + 1)
+              setDisplayedContent(newDisplayed)
+              indexRef.current = currentIndex + 1
+              timeoutRef.current = setTimeout(animateText, CHARACTER_DELAY)
             } else {
               isAnimatingRef.current = false
             }
           }
 
-          rafRef.current = requestAnimationFrame(animateText)
-        } else if (indexRef.current < content.length && isAnimatingRef.current) {
-          // Animation already running, it will pick up new content automatically
+          if (!isAnimatingRef.current) {
+            if (timeoutRef.current) {
+              clearTimeout(timeoutRef.current)
+            }
+            isAnimatingRef.current = true
+            animateText()
+          }
         }
       } else {
         // Streaming ended - show full content immediately
-        if (rafRef.current) {
-          cancelAnimationFrame(rafRef.current)
+        if (timeoutRef.current) {
+          clearTimeout(timeoutRef.current)
         }
         setDisplayedContent(content)
         indexRef.current = content.length
         isAnimatingRef.current = false
       }
 
       return () => {
-        if (rafRef.current) {
-          cancelAnimationFrame(rafRef.current)
+        if (timeoutRef.current) {
+          clearTimeout(timeoutRef.current)
         }
         isAnimatingRef.current = false
       }

diff --git a/...ponents/panel/components/copilot/components/copilot-message/components/thinking-block.tsx b/...ponents/panel/components/copilot/components/copilot-message/components/thinking-block.tsx
@@ -46,12 +46,14 @@ interface SmoothThinkingTextProps {
  */
 const SmoothThinkingText = memo(
   ({ content, isStreaming }: SmoothThinkingTextProps) => {
-    const [displayedContent, setDisplayedContent] = useState('')
+    // Initialize with full content when not streaming to avoid flash on page load
+    const [displayedContent, setDisplayedContent] = useState(() => (isStreaming ? '' : content))
     const [showGradient, setShowGradient] = useState(false)
     const contentRef = useRef(content)
     const textRef = useRef<HTMLDivElement>(null)
     const rafRef = useRef<number | null>(null)
-    const indexRef = useRef(0)
+    // Initialize index based on streaming state
+    const indexRef = useRef(isStreaming ? 0 : content.length)
     const lastFrameTimeRef = useRef<number>(0)
     const isAnimatingRef = useRef(false)
 

diff --git a/...Id]/w/[workflowId]/components/panel/components/copilot/components/tool-call/tool-call.tsx b/...Id]/w/[workflowId]/components/panel/components/copilot/components/tool-call/tool-call.tsx
@@ -1952,7 +1952,12 @@ export function ToolCall({ toolCall: toolCallProp, toolCallId, onStateChange }:
   }, [params])
 
   // Skip rendering some internal tools
-  if (toolCall.name === 'checkoff_todo' || toolCall.name === 'mark_todo_in_progress') return null
+  if (
+    toolCall.name === 'checkoff_todo' ||
+    toolCall.name === 'mark_todo_in_progress' ||
+    toolCall.name === 'tool_search_tool_regex'
+  )
+    return null
 
   // Special rendering for subagent tools - show as thinking text with tool calls at top level
   const SUBAGENT_TOOLS = [

diff --git a/...nel/components/copilot/components/user-input/components/model-selector/model-selector.tsx b/...nel/components/copilot/components/user-input/components/model-selector/model-selector.tsx
@@ -32,13 +32,6 @@ function getModelIconComponent(modelValue: string) {
   return <IconComponent className='h-3.5 w-3.5' />
 }
 
-/**
- * Checks if a model should display the MAX badge
- */
-function isMaxModel(modelValue: string): boolean {
-  return modelValue === 'claude-4.5-sonnet' || modelValue === 'claude-4.5-opus'
-}
-
 /**
  * Model selector dropdown for choosing AI model.
  * Displays model icon and label.
@@ -139,11 +132,6 @@ export function ModelSelector({ selectedModel, isNearTop, onModelSelect }: Model
             >
               {getModelIconComponent(option.value)}
               <span>{option.label}</span>
-              {isMaxModel(option.value) && (
-                <Badge size='sm' className='ml-auto'>
-                  MAX
-                </Badge>
-              )}
             </PopoverItem>
           ))}
         </PopoverScrollArea>

diff --git a/...Id]/w/[workflowId]/components/panel/components/copilot/components/user-input/constants.ts b/...Id]/w/[workflowId]/components/panel/components/copilot/components/user-input/constants.ts
@@ -238,8 +238,8 @@ export const MODEL_OPTIONS = [
   { value: 'claude-4.5-opus', label: 'Claude 4.5 Opus' },
   { value: 'claude-4.5-sonnet', label: 'Claude 4.5 Sonnet' },
   { value: 'claude-4.5-haiku', label: 'Claude 4.5 Haiku' },
-  { value: 'gpt-5.1-codex', label: 'GPT 5.1 Codex' },
-  { value: 'gpt-5.1-medium', label: 'GPT 5.1 Medium' },
+  { value: 'gpt-5.2-codex', label: 'GPT 5.2 Codex' },
+  { value: 'gpt-5.2-pro', label: 'GPT 5.2 Pro' },
   { value: 'gemini-3-pro', label: 'Gemini 3 Pro' },
 ] as const
 

diff --git a/apps/sim/lib/copilot/api.ts b/apps/sim/lib/copilot/api.ts
@@ -77,6 +77,9 @@ export interface SendMessageRequest {
     | 'gpt-5.1-high'
     | 'gpt-5-codex'
     | 'gpt-5.1-codex'
+    | 'gpt-5.2'
+    | 'gpt-5.2-codex'
+    | 'gpt-5.2-pro'
     | 'gpt-4o'
     | 'gpt-4.1'
     | 'o3'

diff --git a/apps/sim/stores/panel/copilot/store.ts b/apps/sim/stores/panel/copilot/store.ts
@@ -422,7 +422,8 @@ function abortAllInProgressTools(set: any, get: () => CopilotStore) {
  * Loads messages from DB for UI rendering.
  * Messages are stored exactly as they render, so we just need to:
  * 1. Register client tool instances for any tool calls
- * 2. Return the messages as-is
+ * 2. Clear any streaming flags (messages loaded from DB are never actively streaming)
+ * 3. Return the messages
  */
 function normalizeMessagesForUI(messages: CopilotMessage[]): CopilotMessage[] {
   try {
@@ -438,23 +439,54 @@ function normalizeMessagesForUI(messages: CopilotMessage[]): CopilotMessage[] {
       }
     }
 
-    // Register client tool instances for all tool calls so they can be looked up
+    // Register client tool instances and clear streaming flags for all tool calls
     for (const message of messages) {
       if (message.contentBlocks) {
         for (const block of message.contentBlocks as any[]) {
           if (block?.type === 'tool_call' && block.toolCall) {
             registerToolCallInstances(block.toolCall)
+            clearStreamingFlags(block.toolCall)
           }
         }
       }
+      // Also clear from toolCalls array (legacy format)
+      if (message.toolCalls) {
+        for (const toolCall of message.toolCalls) {
+          clearStreamingFlags(toolCall)
+        }
+      }
     }
-    // Return messages as-is - they're already in the correct format for rendering
     return messages
   } catch {
     return messages
   }
 }
 
+/**
+ * Recursively clears streaming flags from a tool call and its nested subagent tool calls.
+ * This ensures messages loaded from DB don't appear to be streaming.
+ */
+function clearStreamingFlags(toolCall: any): void {
+  if (!toolCall) return
+
+  // Always set subAgentStreaming to false - messages loaded from DB are never streaming
+  toolCall.subAgentStreaming = false
+
+  // Clear nested subagent tool calls
+  if (Array.isArray(toolCall.subAgentBlocks)) {
+    for (const block of toolCall.subAgentBlocks) {
+      if (block?.type === 'subagent_tool_call' && block.toolCall) {
+        clearStreamingFlags(block.toolCall)
+      }
+    }
+  }
+  if (Array.isArray(toolCall.subAgentToolCalls)) {
+    for (const subTc of toolCall.subAgentToolCalls) {
+      clearStreamingFlags(subTc)
+    }
+  }
+}
+
 /**
  * Recursively registers client tool instances for a tool call and its nested subagent tool calls.
  */

diff --git a/apps/sim/stores/panel/copilot/types.ts b/apps/sim/stores/panel/copilot/types.ts
@@ -106,6 +106,9 @@ export interface CopilotState {
     | 'gpt-5.1-high'
     | 'gpt-5-codex'
     | 'gpt-5.1-codex'
+    | 'gpt-5.2'
+    | 'gpt-5.2-codex'
+    | 'gpt-5.2-pro'
     | 'gpt-4o'
     | 'gpt-4.1'
     | 'o3'