Strongest fit
Who it is built for
- Analysts reading long online articles
- Research assistants working through dense papers
- Students using online textbooks and documents
Locus
Browser search and research assistance using natural language
Locus is a browser extension that finds relevant information in web pages and PDFs from natural-language queries. It also provides research assistance for summarizing content, brainstorming topics, creating note cards, and saving useful answers as Favorites.
LOLocusProduct screenshot pending
- Best for
- Analysts reading long online articles
- Pricing signal
- USD 7.50 / month, billed annually
- Primary category
- Research tools
- Last verified
- Jul 30, 2026
The decision
Should Locus make your shortlist?
Start with the job, the team, and the constraints. Product fit becomes much clearer when those three line up.
Practical use cases
Jobs it can take on
- Find a relevant section of a web page with a natural-language query
- Search and summarize PDF documents
- Create note cards and save search answers for later reference
Before you choose
Know the tradeoffs
- The Free plan has daily limits on documents and AI actions.
- Unlimited use of OpenAI GPT-4o requires a user-provided GPT API key.
Inside the product
What you can actually do with it.
The core product capabilities, grouped around the work they enable.
Smart Search
Locus searches web pages and PDFs with natural-language queries rather than requiring exact keyword matches.
Research assistance
Its AI helpers can summarize content, suggest research topics, and create note cards from material being read.
Favorites
Users can save information and highlighted search answers for reference across documents.
Typical workflow
Add the Locus browser extension and open a web page or PDF. Ask a natural-language question to locate relevant content, then use the available AI helpers or save answers to Favorites.
Plans and official links
Plans and accessUSD 7.50 / month, billed ann.
See the entry price, free access options, company details, and direct vendor destinations in one place.
Starting pointUSD 7.50 / month, billed annually
Free planFree trial
See plans- Provider
- Locus AI LLC
- Based in
- US
- Founded
- 2023
Official destinations
Choosing for a real workflow?
Make the tool work with the rest of your operation.
We map the workflow, connect existing systems, choose what to buy, and build what is missing.