Two AI sidebars, two different bets. Sider is an all-in-one AI suite on a subscription, across Chrome, Edge, Safari, and more. AlliHat is a focused Safari sidebar that runs on your own AI keys or Apple's on-device model, kept private on your Mac.
$29.99/year after trial · macOS 14+ · Sign in with ChatGPT, use an API key, or choose Apple's on-device AI
Sider is a broad, all-in-one AI suite on a subscription, available across many platforms. AlliHat is a focused Safari sidebar that runs on your own AI keys or Apple's on-device model. Here's how they line up.
| Feature | AlliHat | Sider |
|---|---|---|
| Pricing model | $29.99/yr; optional API usage billed separately | Subscription with monthly credits |
| Bring your own API key | ✓ | × |
| Apple on-device AI (free, fully private) | ✓ | × |
| No separate app account required | ✓ | × |
| Data routing | Straight to your provider, no middle server | Through Sider's account and service |
| Models | Claude, ChatGPT, Gemini, OpenRouter Auto, Apple on-device | GPT, Claude, Gemini, Grok, DeepSeek and more |
| Ask about the current page | ✓ | ✓ |
| Highlight to explain | ✓ | ✓ |
| Agent mode (clicks, fills forms, navigates) | ✓ | × |
| Platforms | Safari on Mac | Chrome, Edge, Safari, iOS, Android, desktop |
Sider's plans and model lineup change over time. Check sider.ai for their current pricing.
Same idea: an AI sidebar that reads the page with you, with a different set of priorities.
Sider packs in image generation, slide makers, deep research, and a knowledge base across every platform. AlliHat does a few things well: read the page with you, explain what you highlight, and act on the page when you ask. No suite to learn.
Sign in with ChatGPT, use a provider API key, or choose Apple's on-device AI. Your ChatGPT plan limits apply. API usage is billed by your provider; Apple Intelligence has no extra usage fee. AlliHat is $29.99 a year after a 7-day trial.
Page content and conversations go straight from your Mac to the provider you chose. No account, no AlliHat servers in the middle, and no analytics inside the extension.
AlliHat is a focused Safari sidebar that works with your ChatGPT account, provider API keys, or Apple's on-device model, with no AlliHat account and nothing passing through our servers. Sider is a broader all-in-one AI suite (chat, image generation, slides, deep research, a knowledge base) that runs on a subscription with credits across many platforms.
It depends on how you use it. AlliHat is $29.99 a year. ChatGPT sign-in uses your ChatGPT plan limits, and Apple's on-device model has no extra usage fee. Optional API usage is billed separately. Sider's paid plans are subscriptions with monthly credit limits. If you want one tool that does everything, Sider's suite may be worth it. Compare the total cost of the provider you choose with the features you need.
ChatGPT sign-in needs no API key and uses your ChatGPT plan limits. API providers bill usage separately. Apple's on-device model has no extra usage fee. Your AlliHat subscription is separate in every case.
AlliHat works directly with Claude, ChatGPT, and Gemini, or uses OpenRouter Auto to select from OpenRouter's model catalog for each task. It also supports Apple's on-device AI. Sider bundles access to a broad model catalog through its own subscription.
With AlliHat, direct-provider requests go straight from your browser to that provider. OpenRouter requests go through OpenRouter to its selected model provider. Nothing passes through AlliHat servers, and the extension has no analytics or tracking. Sider runs on an account and routes through its own subscription service.
No. AlliHat keeps each conversation right where you left it in Safari, but it doesn't include a separate saved library. If a persistent, cross-device knowledge base is central to your workflow, Sider's Wisebase is purpose-built for that.
Sign in with ChatGPT, use a provider API key, or choose Apple's on-device AI