Perplexity
Answer engine that searches the web for each question and writes a reply with numbered links to the pages it used.
- Shows sources with answers
- AI-written answers
- Free to use or free plan
ChatGPT
OpenAI's assistant, which can search the web during a chat and show links to the pages behind its answer.
- Shows sources with answers
- AI-written answers
- Free to use or free plan
Google Search
The largest web search engine, which now places AI-written overviews with source links above many results.
- Shows sources with answers
- AI-written answers
- Free to use or free plan
Microsoft Copilot
Microsoft's consumer assistant that answers with web results from Bing and links to its sources.
- Shows sources with answers
- AI-written answers
- Free to use or free plan
Bing
Microsoft's web search engine, with AI-generated answers and a Copilot chat mode alongside regular results.
- AI-written answers
- Free to use or free plan
- Mobile app
You.com
AI search and research assistant that writes cited answers and lets you pick between several AI models.
- Shows sources with answers
- AI-written answers
- Free to use or free plan
Claude
Anthropic's assistant, which can search the web when you ask and cite the pages it read.
- Shows sources with answers
- AI-written answers
- Free to use or free plan
Gemini
Google's assistant, which draws on Google Search for current topics and can check its reply against search results.
- AI-written answers
- Free to use or free plan
- Developer API
Grok
xAI's assistant, which searches the web and posts on X to answer questions about current events.
- AI-written answers
- Free to use or free plan
- Developer API
DuckDuckGo
Search engine that says it doesn't build profiles of its users, with optional AI answers and a private AI chat.
- AI-written answers
- Free to use or free plan
- Mobile app
Brave Search
Search engine with its own independent web index, AI-written answers and no profiling of users.
- Shows sources with answers
- AI-written answers
- Free to use or free plan
Startpage
Private search engine that shows Google results without passing your identity to Google, with an anonymous page viewer.
- Free to use or free plan
Kagi
Paid, ad-free search engine where you can block or boost sites, with AI summaries and an assistant built in.
- Shows sources with answers
- AI-written answers
Mojeek
Independent search engine with its own crawler and index, built in the UK around not tracking users.
- Free to use or free plan
Ecosia
Search engine that uses its ad income to fund tree planting, with an AI chat option and a mobile browser.
- Free to use or free plan
- Mobile app
Qwant
French search engine focused on privacy, with results in many European languages and AI-written summaries for some queries.
- Free to use or free plan
Google Scholar
Free search engine for scholarly papers, theses and books, with citation counts and links to free versions.
- Free to use or free plan
Semantic Scholar
Free academic search engine from the Allen Institute for AI, with one-line paper summaries and citation context.
- AI-written answers
- Free to use or free plan
- Developer API
Elicit
Research assistant that finds papers for a question and pulls their findings into a table you can sort and check.
- Shows sources with answers
- AI-written answers
- Free to use or free plan
Consensus
Search engine that answers questions from peer-reviewed research and shows which papers support each point.
- Shows sources with answers
- AI-written answers
- Free to use or free plan
scite
Shows how later papers cite a study, including whether the citing papers support or dispute its findings.
- Shows sources with answers
- AI-written answers
OpenAlex
Free, open index of research papers, authors and institutions, searchable on the web and through an API.
- Free to use or free plan
- Developer API
CORE
Search engine for open access research papers, aggregating full texts from repositories and journals worldwide.
- Free to use or free plan
- Developer API
Connected Papers
Builds a visual graph of papers related to one you choose, so you can find earlier and later work on a topic.
- Free to use or free plan
Sourcegraph
Code search across many repositories at once, used by engineering teams to find and understand code in large codebases.
GitHub code search
Search across public code on GitHub and your own repositories, with filters by language, path and repository.
- Free to use or free plan
grep.app
Fast search across a large set of public Git repositories, with support for regular expressions.
- Free to use or free plan
DevDocs
One searchable interface for the documentation of many programming languages and frameworks, usable offline.
- Free to use or free plan
Stack Overflow
Question and answer site for programmers, where answers are voted on and searchable by tag and error message.
- Free to use or free plan
Glean
Workplace search and assistant that answers questions from a company's apps and documents while respecting their permissions.
- Shows sources with answers
- AI-written answers
Guru
Company knowledge base with AI search that answers questions from verified cards and connected apps.
- AI-written answers
Microsoft 365 Copilot
AI assistant inside Microsoft 365 that searches your organization's email, files, chats and meetings to answer questions.
- Shows sources with answers
- AI-written answers
Notion AI
AI in Notion that answers questions from your workspace pages and connected apps, and drafts and summarizes text.
- AI-written answers
Rovo
Atlassian's AI search and chat that finds answers across Jira, Confluence and connected third-party apps.
- AI-written answers
Exa
Web search API built for AI applications, returning results by meaning plus the page contents for an agent to read.
- Developer API
Tavily
Search API for AI agents that returns relevant web results and extracted page content in one call.
- Developer API
Brave Search API
Developer access to Brave's independent web index, with web, news, image and AI-grounding endpoints.
- Developer API
SerpApi
API that returns search engine result pages from Google and other engines as structured JSON.
- Developer API
Programmable Search Engine
Google tool for adding a search box over chosen sites to your own pages, with a JSON API for developers.
- Free to use or free plan
- Developer API
DataForSEO
APIs for search result data, keywords and backlinks, used by SEO tools and developers who need SERP data at scale.
- Developer API
Jina AI
Tools for search developers, including a reader that turns a web page into clean text for language models.
- Developer API
Microsoft Edge
Microsoft's browser with Copilot in a side panel that can summarize the page you're on and search the web.
- AI-written answers
- Free to use or free plan
- Mobile app
Brave Leo
AI assistant built into the Brave browser that answers questions and summarizes pages, with a privacy-focused design.
- AI-written answers
- Free to use or free plan
- Mobile app
Google Chrome
Google's browser, which adds Gemini features for asking about a page and searches with Google Lens from the address bar.
- Free to use or free plan
- Mobile app
Firefox
Mozilla's browser, which lets you choose an AI chatbot for its sidebar and keeps the choice optional.
- Free to use or free plan
- Mobile app
Opera
Browser with Aria, a free built-in AI assistant that answers questions and works with the page you have open.
- AI-written answers
- Free to use or free plan
- Mobile app
Algolia
Hosted search for websites, stores and apps, with AI features for ranking, synonyms and conversational answers.
- AI-written answers
- Developer API
Typesense
Open-source search engine you can host yourself or use in the cloud, with typo tolerance and vector search.
- Free to use or free plan
- Developer API
Meilisearch
Open-source search engine for sites and apps, self-hosted or in the cloud, with fast typo-tolerant and hybrid search.
- Free to use or free plan
- Developer API
Elastic
Company behind Elasticsearch, a search and analytics engine used for site search, logs and AI retrieval.
- Developer API
Coveo
AI search and recommendations for large websites, stores, support portals and workplaces.
- AI-written answers
- Developer API
Vectara
Platform for building AI search and question answering over your own documents, offered as a hosted API.
- AI-written answers
- Developer API
Google Lens
Search with your camera or a photo to identify objects, plants and products, translate text and find similar images.
- Free to use or free plan
- Mobile app
Google Images
Google's image search, where you can search by words or upload a picture to find where else it appears.
- Free to use or free plan
Bing Visual Search
Microsoft's search by image: upload or snap a photo to find similar images, products and information about it.
- Free to use or free plan
TinEye
Reverse image search engine that finds where a picture appears online and which copy came first.
- Free to use or free plan
- Developer API
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