Monica
All-in-one AI assistant that routes to GPT, Claude, and Gemini from a browser sidebar, desktop, web, and mobile — chat, write, translate, search, summarize.
FREEMIUM Verified JUL 12, 2026
Sider
A Chrome, Edge, and Safari sidebar that brings 20+ AI models, page and PDF summarizing, translation, and writing into any browser tab
Sider is a browser sidebar assistant that puts 20+ AI models — GPT, Claude, Gemini, DeepSeek, and Grok — into any tab for chat, page and PDF summarizing, translation, and writing. The free plan gives 30 Basic Credits a day; paid plans start around $10/month (Basic) and scale to an Unlimited tier near $25/month. With 10M+ installs it is a strong Monica alternative for browser-based AI, though tier names and prices shift often.
Unverified JUL 14, 2026 FREEMIUM Live
What is Sider?
Sider is a browser assistant that lives in a sidebar you can open on any webpage in Chrome, Edge, or Safari. Instead of copying text into a separate chatbot tab, you highlight or open a page and ask questions in place: summarize the article, translate a passage, explain a PDF, or draft a reply. It bundles access to 20+ large language models — OpenAI’s GPT, Anthropic’s Claude, Google’s Gemini, DeepSeek, and xAI’s Grok among them — so one subscription can replace several individual AI accounts. Sider reports more than 10 million installs and 40,000+ five-star reviews on the Chrome Web Store, making it one of the most widely used AI browser extensions.
Beyond chat, Sider has grown into a small suite: ChatPDF and multi-document analysis, webpage and YouTube summarizing, side-by-side translation across 50+ languages, AI writing and slide tools, image generation, and a Deep Research agent that gathers and cites 100+ sources into a report. Usage is metered with a three-tier credit system — Basic Credits for lightweight models, Advanced Credits for premium models, and Elite Credits for agent features. The free plan grants 30 Basic Credits per day; paid plans raise or remove those caps. Pricing and tier names have changed repeatedly, so the exact figures above should be confirmed on Sider’s own pricing page.
Who is it for?
Sider suits people who spend most of their day in a browser and want AI help in context rather than in a separate app. The free tier is fine for light, occasional use, but the value shows once you rely on premium models or the research and translation agents, which require a paid plan. Its closest catalog rival is Monica, another multi-model sidebar; the choice between them mostly comes down to credit-metered flexibility versus simpler flat limits.
- Researchers and students who summarize articles, papers, and videos and want cited briefs from the Deep Research agent.
- Multilingual professionals who read foreign-language pages and draft replies using side-by-side translation across 50+ languages.
- Knowledge workers who juggle several AI tools and want GPT, Claude, and Gemini behind one login and one bill.
- Writers and marketers who draft, rewrite, and summarize inside the pages they are already working on.
How much does Sider cost?
Starting price: $10/mo · Free tier: yes · Model: freemium
Pricing verified JUL 14, 2026
Price history tracked from June 2026
| Plan | Price | Includes |
|---|---|---|
| Free | $0 | 30 Basic Credits per day · Sidebar chat on any webpage · Standard models and basic translation · No credit card required |
| Basic | $10/mo | 3,600 Basic Credits per month · 200 Advanced Credits per month (premium models) · 80 Elite Credits per month (agent features) · ChatPDF, summarizing, and 50+ language translation · Cheaper on annual billing (about $8/mo) |
| Pro | $20/mo | Much higher Basic and Advanced Credit limits · Around 250 Elite Credits per month for agents · Priority access to premium models · Ad-free experience |
| Unlimited | $25/mo | Unlimited Basic and Advanced Credits (fair-use) · Largest Elite Credit pool for Deep Research and agents · All models and tools · Cross-device sync across web, desktop, and mobile |
| Enterprise | Custom | Custom credit pools and seats · Team billing and administration · Priority support · Contact sales for pricing |
What are Sider's key features?
- AI sidebar accessible on any webpage for chat across 20+ models
- Webpage, YouTube, and PDF summarizing (ChatPDF) with multi-document analysis
- Instant translation across 50+ languages with side-by-side bilingual view
- AI writing tools including an AI writer, slide generation, and web content creation
- Deep Research agent that gathers and cites 100+ sources into a report
- Image generation and editing tools inside the sidebar
- Three-tier credit system (Basic, Advanced, Elite) that meters model and agent usage
What people use Sider for
- 01 Summarizing long articles, research papers, or YouTube videos without leaving the page
- 02 Chatting with a PDF or a batch of documents to pull out specific answers
- 03 Translating foreign-language web pages or drafting replies in another language inline
- 04 Running a multi-source research brief with the Deep Research agent before writing
- 05 Comparing answers from GPT, Claude, and Gemini side by side for the same prompt
Pros and cons
| Pros | Cons |
|---|---|
| One subscription bundles 20+ models (GPT, Claude, Gemini, DeepSeek, Grok) that would otherwise need separate paid accounts | Pricing is volatile and confusing — tier names and prices have changed repeatedly, promotional annual rates differ sharply from month-to-month, and the credit system is hard to compare against flat-rate rivals |
| Free plan needs no credit card and includes 30 Basic Credits per day, enough to evaluate the core sidebar | Advanced-model queries are metered even on paid plans (only 200 Advanced Credits per month on Basic), so heavy GPT-4-class use can exhaust the monthly allowance |
| Works in-context on any page — summarize an article, translate a paragraph, or chat about a PDF without switching tabs | Relies on a browser extension with broad page-reading permissions, which is a privacy consideration for sensitive work |
| Broad platform coverage: Chrome, Edge, and Safari extensions plus Windows, macOS, iOS, and Android apps with cross-device sync | Firefox is not supported; coverage is limited to Chrome, Edge, and Safari plus the separate desktop and mobile apps |
What are the best Sider alternatives?
Poe
Quora's multi-model AI aggregator — chat with GPT, Claude, Gemini, and thousands of bots under one subscription
FREEMIUM Verified JUN 20, 2026
ChatGPT
Conversational AI assistant by OpenAI with multimodal reasoning, voice, and agent capabilities
FREEMIUM Verified JUN 11, 2026
Perplexity
AI-powered answer engine that searches the live web and cites every source
FREEMIUM Verified JUN 11, 2026
Genspark
All-in-one AI Super Agent that runs research, slides, sheets, browsing, and real phone calls
FREEMIUM Verified JUN 22, 2026
How people make money with Sider
- Offer research and summarization as a freelance service — Sider's Deep Research agent crawls 100+ sources into a cited brief, letting you turn around market scans or literature reviews faster for clients on Upwork or Fiverr
- Run a multilingual content-localization side gig using Sider's side-by-side translation across 50+ languages to draft and proof translated web copy for small e-commerce stores
Frequently asked questions
Is Sider free?
Yes. Sider has a permanent free plan with no credit card required. It provides 30 Basic Credits per day for the sidebar chat and core tools using standard models. Premium models, higher limits, and agent features require a paid plan such as Basic, Pro, or Unlimited.
How much does Sider cost?
Sider's paid plans start around $10/month for Basic, with Pro near $20/month and an Unlimited tier around $25/month; annual billing is cheaper. Prices and tier names change frequently and vary by promotion, so confirm the current figures on Sider's official pricing page before subscribing.
What are Sider's credits?
Sider meters usage with three credit types. Basic Credits cover lightweight models, Advanced Credits cover premium models like GPT-4-class and Claude, and Elite Credits power agent features such as Deep Research. The Basic plan includes 3,600 Basic, 200 Advanced, and 80 Elite Credits per month.
Which AI models does Sider support?
Sider bundles 20+ models in one interface, including OpenAI GPT, Anthropic Claude, Google Gemini, DeepSeek, and xAI Grok. You switch models per query, and higher-tier models consume Advanced Credits. Model availability depends on your plan, with premium models reserved mostly for paid tiers.
What platforms does Sider work on?
Sider runs as a browser extension for Chrome, Edge, and Safari, plus standalone apps for Windows, macOS, iOS, and Android and a web app. Accounts sync across devices, so conversations and settings follow you. Firefox is not supported.
How is Sider different from Monica?
Both are AI browser sidebars bundling multiple models. Sider emphasizes its credit system, Deep Research agent, and 10M+ install base, while Monica leans on a simpler flat query allowance. The best pick depends on whether you prefer credit-metered flexibility or predictable per-day limits.