Model comparison
| Model | Usage | Best for | Conversations | Editing |
|---|---|---|---|---|
| Max | High | Complex reasoning, multi-document work, long summaries | Multi-turn | Yes |
| Fast | Medium | Space-level questions, deeper analysis, longer conversations | Multi-turn | Yes |
| Core | Low | Everyday in-document queries, balanced performance | Single response | No |
| Core model | Processing | Conversations | Availability |
|---|---|---|---|
| GPT-5 Nano | Cloud | Single response | All platforms |
| Apple Foundation Model | On-device | Multi-turn | Mac, iPad, iPhone |
| LLaMa 3.2 | On-device | Single response | Mac, iPad, iPhone |
On-device models process everything locally on your device — no data is sent to external servers. They don’t count toward your AI usage but are only available at document level.
Apple Foundation Model requires Apple Intelligence to be enabled in System Settings.
When to choose each model
Core
The default tier for most everyday tasks. Use for in-document questions, quick summaries, and simple transformations.- On-device models don’t count toward your AI usage; GPT-5 Nano uses a low amount
- Apple Foundation Model supports back-and-forth conversations and runs entirely on-device — a good choice for iterating on a question privately
- GPT-5 Nano and LLaMa 3.2 give a single response per conversation
- Read-only — no document editing
Fast
Use for space-level queries and quick edits.- Good balance of speed and quality
- Supports editing on supported platforms
- Works well for short to medium editing tasks
Max
Use for complex reasoning and high-quality editing.- Best output quality for large or structured edits
- Best for advanced multi-document analysis
- Supports editing on supported platforms
Platform differences
All cloud models (Max, Fast, GPT-5 Nano) are available on every platform — macOS, iOS, Windows, and Web. On-device models (Apple Foundation Model, LLaMa 3.2) are available on Mac, iPad, and iPhone only. Editing with the Assistant is currently supported on macOS and iOS — see Editing with Craft Assistant for details.Related Articles
Using Craft Assistant
Learn how to start conversations and work with the Assistant
Editing with Craft Assistant
See what editing can do and how modes work
Usage & Limits
Understand AI usage and top-up options