AI Chat & Assistants (8)

All 8 AI browser extensions in the Flocci catalog, 8 of them free or freemium. Pricing tier and real capabilities on every entry — no ads, no sponsored placement.

AllGeneral Purpose ChatbotsBrowser Extensions & CopilotsAI Companions & RoleplayMulti-Model Aggregators & Universal Clients

Sider

Browser Extensions & Copilots
freemium
  • ChatGPT/Claude/Gemini in a browser sidebar
  • Summarize any page, PDF or YouTube video
  • Translate, rewrite and explain selections
  • Works across every website
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Monica

Browser Extensions & Copilots
freemium
  • All-in-one AI copilot for the browser
  • Access to GPT, Claude & Gemini
  • Writing, translation and search tools
  • Desktop app and memo features
Visit

Merlin AI

Browser Extensions & Copilots
freemium
  • Works on any website
  • Summarize YouTube, articles and PDFs
  • Multiple frontier models in one place
  • Social-media reply generator
Visit

MaxAI.me

Browser Extensions & Copilots
freemium
  • One-click rewrite, reply and summarize
  • Chat with any page or image
  • Instant translation and grammar fixes
  • Prompt library built in
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Harpa AI

Browser Extensions & Copilots
freemium
  • AI web automation and monitoring
  • Track prices and page changes
  • Scrape and summarize sites
  • Custom command workflows
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Brave Leo

Browser Extensions & Copilots
freemium
  • Built directly into the Brave browser sidebar — no separate site, no account, no signup required for free tier
  • Access to Claude, Mixtral and Llama models without opening a separate chatbot site
  • Conversations never stored on Brave's servers and not used for model training
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Dia

Browser Extensions & Copilots
freemium
  • AI-native Chromium browser (from the makers of Arc) with AI chat built into every tab, not bolted on as a sidebar
  • Free for light AI use; a Pro tier lifts the usage caps
  • Now backed by Atlassian after its 2026 acquisition of The Browser Company
Visit

Opera Browser AI (Aria)

Browser Extensions & Copilots
free
  • Free, native AI assistant built into Opera's mainstream and GX browsers, no separate app needed
  • Powered by a mix of OpenAI GPT and Google Gemini models under the hood
  • 2025-2026 upgrade added faster models, higher usage limits and access to open-source local models
Visit

Browser Extensions & Copilots — straight answers

What are the best free AI browser extensions?

Flocci AI Tools lists 8 AI browser extensions, ordered free tiers first: Opera Browser AI (Aria), Brave Leo, Dia, Harpa AI and MaxAI.me. All of them are free or have a free tier. Every entry states what it uniquely does, not a score.

Are there completely free AI browser extensions?

Yes — 1 of these are marked fully free with no paid plan attached: Opera Browser AI (Aria). The rest are freemium, trial or paid, and each row states which.

What should I look for in AI browser extensions?

Start with what you need to do: put an AI sidebar on every website you visit. Then check the pricing tier, because "free" here means no paid plan at all while "freemium" means a free tier under paid plans. Every tool on this page lists both.

See the full list →

Looking for a ranked shortlist instead? See the best free AI browser extensions.