HARPA AI vs Sider: side-by-side comparison of pricing, ratings, and features on SoftwareVital (2026).
Pricing models differ: HARPA AI is freemium, Sider is free. Feature lists share 0 overlapping items across the two listings.
AI browser assistant for Chrome that brings chat, page-aware replies and web automation into your everyday browsing.
Sider is a browser extension AI assistant that helps you read, write, and chat with ChatGPT, Claude, and Gemini on any webpage.
| Attribute | HARPA AI | Sider |
|---|---|---|
| Rating | — | — |
| Reviews | — | — |
| Pricing | freemium · $13.2 | free |
| Votes | 0 | 0 |
| Category | AI Agent | AI Assistant |
| Feature | HARPA AI | Sider |
|---|---|---|
| 50 AI command runs | ||
| vision | ||
| agent and page-aware messages total | ||
| 2 web automations | ||
| 2 custom commands | ||
| 3 in 1 package: GPT-4o | ||
| Claude 3.5 | ||
| API Key models | ||
| Data not used for training | ||
| no hourly rate limits | ||
| faster than ChatGPT Plus | ||
| Edit predefined commands | ||
| AI assistant integrating ChatGPT | ||
| and Gemini for reading | ||
| and more on any webpage |