Want to use AI in iMessage? You can text ChatGPT directly from any iPhone, either through Apple's built-in integration (if you have the right hardware) or third-party services that work on older devices.
This guide covers both options so you can pick what works best for your setup.
With iOS 18.2, Apple added ChatGPT directly into Siri and Messages. You can ask Siri to use ChatGPT for complex questions, and even generate images in conversations.
According to Apple's official requirements, you need:
Apple's ChatGPT setup guide walks through the full process:
Once enabled, you can say things like "ChatGPT, generate an image of..." and insert AI-generated images directly into your Messages conversations.
The catch: This only works on the newest iPhones. If you have an iPhone 14 or older, you'll need a different approach.
Third-party services let you text an AI assistant directly in iMessage, just like messaging a friend. No app download, no account creation, no hardware requirements.
That's it. The AI responds in the same thread, and you can continue the conversation naturally.
Whether you use Apple's integration or a third-party service, here's what's possible:
Get instant answers to questions without leaving your conversation. "What's the capital of Morocco?" "How many cups in a gallon?" "Explain quantum computing simply."
Draft emails, messages, or social posts. Ask for rewrites in different tones. Get help with grammar and phrasing.
Create AI images by describing what you want. Some services support DALL-E for generating custom artwork, memes, or visualizations.
Get summaries of topics, compare options, or ask for recommendations. The AI can synthesize information faster than searching multiple sources.
Some iMessage AI services can set reminders that text you back at a specific time, useful for follow-ups and time-sensitive tasks.
| Feature | Apple Intelligence | iMessage AI Services |
|---|---|---|
| Device support | iPhone 15 Pro+ only | Any iPhone |
| Setup required | iOS settings | Save a contact |
| Siri voice control | Yes | Yes |
| Works offline | No | No (but works with poor data) |
| Apple Watch | Limited | Full support |
| CarPlay | Via Siri | Via Siri + iMessage |
| Image generation | Yes | Yes (service dependent) |
| Cost | Free (limited) or ChatGPT Plus | Varies by service |
Instead of "help me write something," try "write a polite email declining a meeting invitation." More context gets better results.
With Siri integration, you can dictate your questions instead of typing. Great for when you're driving or have your hands full.
Start a new conversation for new topics. This helps the AI give more relevant responses without confusion from earlier context.
Many services can analyze photos you send, receipts, documents, menus, screenshots. Just send the image and ask your question.
Yes. You can use ChatGPT in iMessage through Apple Intelligence (iPhone 15 Pro or newer with iOS 18.2+) or through third-party iMessage AI services that work on any iPhone.
The easiest way is to save an iMessage AI service as a contact and text it like a friend. Services like Olly (also known as iChatWithGPT) work on any iPhone and require no app download or account creation.
Yes. With iMessage-based AI services, you can use Siri voice commands like "Hey Siri, text [contact name]" to send messages hands-free. The AI response comes back as a text that Siri can read aloud.
If you have an iPhone 15 Pro or newer, Apple Intelligence gives you a solid built-in option. For everyone else, or anyone who wants a simpler setup, iMessage AI services deliver the same core functionality without hardware restrictions.
The best part about the iMessage approach: it fits naturally into how you already use your phone. No new apps to learn, no accounts to manage. Just text.