Best Alternatives to Sider
A Chrome sidebar for chatting with GPT, Claude, Gemini and other models on any webpage, and for summarising, translating and writing without switching tabs. Free daily credits; paid plans add more. Our comprehensive comparison helps you find the perfect Extensions ChatGPT alternative based on pricing, features, privacy, and workflow requirements. We've hand-picked the top-rated tools with strong free tiers and proven user satisfaction.
Quick Comparison
| Tool | Pricing | Best For |
|---|---|---|
| Monica AI | freemium | All-in-one AI assistant with GPT-5.2, Claude, and Gemini — b... |
| Merlin | free | Merlin brings ChatGPT, GPT-4, Claude, Llama to websites for ... |
| Poe | freemium | Quora Poe = GPT-4/Claude/Gemini all-in-one. FREE daily limit... |
| Claude in Chrome | paid | Anthropic's browser extension: reads the page you are on, th... |
| Abacus.AI | freemium | ChatLLM gives you GPT, Claude, Gemini, Grok, DeepSeek and 20... |
Monica AI
All-in-one AI assistant with GPT-5.2, Claude, and Gemini — browser extension, desktop, and mobile app.
Merlin
Merlin brings ChatGPT, GPT-4, Claude, Llama to websites for email writing, summarization, coding.
Poe
Quora Poe = GPT-4/Claude/Gemini all-in-one. FREE daily limits + $19.99/mo unlimited + create custom bots.
Claude in Chrome
Anthropic's browser extension: reads the page you are on, then clicks, types and fills forms. Requires a paid Claude plan.
Abacus.AI
ChatLLM gives you GPT, Claude, Gemini, Grok, DeepSeek and 20+ models under one $10/month subscription. There is no free ChatLLM tier — the free developer tier belongs to the separate Abacus.AI ML platform.
Poppy AI
Poppy AI is a multiplayer AI whiteboard for creating viral content, writing scripts, and researching — using ChatGPT and Claude together on a visual canvas.