Sider AI

AI sidebar for Chrome and Edge that puts 20+ models on every webpage you visit.

Data verified Nov 7, 2026

Pundit
Score

#2 Trending in Browser ExtensionsAlternatives (4)

Price: $10/mo
Try it free: Free plan
Best for: Researchers

About Sider AI

Sider is a browser-extension AI assistant that overlays a sidebar on any website—Gmail, Google Docs, YouTube, PDFs, news, and social sites—so you can chat, summarize, translate, write, and research without switching tabs. It aggregates 20+ models (OpenAI GPT, Anthropic Claude, Google Gemini, DeepSeek, and xAI Grok) behind one subscription, aimed at students, freelancers, marketers, and knowledge workers who juggle reading, writing, and translation across the web. Its main differentiator is being an always-available in-page sidebar bundling many premium models plus a citing Deep Research agent, rather than a single-model standalone chatbot.

Commonly Cited Strengths & Limitations

Strengths

Instant access to many top AI models in one sidebar on any webpage
Competitive pricing versus subscribing to individual AI tools
Works across websites like Gmail, LinkedIn and search engines
Fast and stable performance across platforms

Limitations

Free plan is very limited (30 basic credits/day)
Credit metering means heavy users hit limits quickly
Single-user with no collaboration features
Thin enterprise/team story (limited admin controls and compliance)

Common Use Cases

Research
Writing and content creation
Summarizing webpages, PDFs and videos
Translation
Image generation and editing

Details

Pricing Model: Freemium
Starting Price: $10/mo
Founded: 2023
Team Size: 51-200 employees
Headquarters: Medford, Massachusetts, USA
Category: Browser Extensions

Who is Sider AI for?

Researchers

Use deep research and multi-source summarization across webpages, PDFs and videos to speed up research.

Writers and content creators

Use the sidebar writing, rewriting and grammar tools to draft and edit content on any page.

Students

Summarize articles, YouTube videos and PDFs and chat with documents to study faster.

Frequently Asked Questions

Is Sider AI free?

Sider AI offers a free plan, with paid plans starting at $10/mo.

Does Sider AI have an API?

Sider AI does not currently offer a public API.

What does Sider AI integrate with?

Sider AI integrates with Chrome, Edge, Gmail, ChatGPT (GPTs & plugins), YouTube, LinkedIn, Twitter/X, Facebook.

Is Sider AI cloud-based or self-hosted?

Sider AI is offered as a cloud-based (SaaS) deployment.

What are the downsides of Sider AI?

Free plan is very limited (30 basic credits/day) Also, Credit metering means heavy users hit limits quickly

Who is Sider AI best for?

Sider AI is best suited for Researchers, Writers and content creators, Students.

What can I use Sider AI for?

Common uses for Sider AI include research, writing and content creation, summarizing webpages, pdfs and videos, translation.

What is the best alternative to Sider AI?

Our reviewed alternatives to Sider AI are Merlin AI, MaxAI.me, Monica AI and HARPA AI.

How does Sider AI compare to Nova?

Sider AI and Nova are both used for browser extensions -- specifically chat assistants. See the full side-by-side comparison for pricing and feature differences.

Sider AI alternatives we reviewed

Reviewed when this listing was published; open-source options are marked.

See all reviewed alternatives →

Merlin AI
Similar browser-sidebar assistant offering multiple AI models across the web.
Visit site →
MaxAI.me
In-browser AI extension for summarizing, writing, and translating on any page.
Visit site →
Monica AI
All-in-one AI browser sidebar with chat, writing, and multi-model access.
Visit site →
HARPA AI
Browser-extension AI agent for web automation, summaries, and chat.
Visit site →