chore: update OpenAI model references to latest versions (#816)

Author: shkumbinhasani

src/blog/tanstack-ai-code-mode.md

@@ -132,7 +132,7 @@ const { tool, systemPrompt } = createCodeMode({
 })
 
 const result = await chat({
-  adapter: openaiText('gpt-4o'),
+  adapter: openaiText('gpt-5.4'),
   systemPrompts: ['You are a helpful assistant.', systemPrompt],
   tools: [tool],
   messages,
@@ -189,13 +189,13 @@ const { toolsRegistry, systemPrompt } = await codeModeWithSkills({
     tools: [myTool1, myTool2],
     timeout: 60_000,
   },
-  adapter: openaiText('gpt-4o-mini'), // cheap model for skill selection
+  adapter: openaiText('gpt-5.4-mini'), // cheap model for skill selection
   skills: { storage, maxSkillsInContext: 5 },
   messages,
 })
 
 const stream = chat({
-  adapter: openaiText('gpt-4o'), // strong model for reasoning
+  adapter: openaiText('gpt-5.4'), // strong model for reasoning
   toolRegistry: toolsRegistry,
   messages,
   systemPrompts: ['You are a helpful assistant.', systemPrompt],

src/blog/tanstack-ai-lazy-tool-discovery.md

@@ -117,7 +117,7 @@ const searchGuitars = toolDefinition({
 
 // Use in chat — lazy tools work automatically
 const stream = chat({
-  adapter: openaiText('gpt-4o'),
+  adapter: openaiText('gpt-5.4'),
   messages,
   tools: [
     getGuitars,

src/blog/tanstack-ai-middleware.md

@@ -43,7 +43,7 @@ import { chat } from '@tanstack/ai'
 import { openaiText } from '@tanstack/ai-openai'
 
 const stream = chat({
-  adapter: openaiText('gpt-4o'),
+  adapter: openaiText('gpt-5.4'),
   messages: [{ role: 'user', content: 'Explain middleware to me' }],
   middleware: [logger],
 })
@@ -377,7 +377,7 @@ import {
 } from '@tanstack/ai/middlewares'
 
 const stream = chat({
-  adapter: openaiText('gpt-4o'),
+  adapter: openaiText('gpt-5.4'),
   messages: req.body.messages,
   tools: [searchTool, weatherTool, calendarTool],
   context: { tenantId: req.auth.tenantId },

src/blog/tanstack-ai-realtime-voice-chat.md

@@ -35,7 +35,7 @@ import { openaiRealtimeToken } from '@tanstack/ai-openai'
 // In your API route / server function
 const token = await realtimeToken({
   adapter: openaiRealtimeToken({
-    model: 'gpt-4o-realtime-preview',
+    model: 'gpt-realtime-1.5',
   }),
 })
 
@@ -460,7 +460,7 @@ The server token endpoint picks the right adapter too:
 async function handleTokenRequest(provider: string) {
   if (provider === 'openai') {
     return realtimeToken({
-      adapter: openaiRealtimeToken({ model: 'gpt-4o-realtime-preview' }),
+      adapter: openaiRealtimeToken({ model: 'gpt-realtime-1.5' }),
     })
   }
   if (provider === 'elevenlabs') {