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Category
Search Engines
AI search engines that answer with cited sources, search APIs for developers, and writing tools aimed at ranking in search results, for researchers, builders and marketers.
Two different audiences share this page. Searchers will find answer engines such as Komo and Felo, which synthesise a response from several pages and cite them, plus Brave AI Summarizer for condensing articles and results. Marketers will find writing tools such as AISEO, which redrafts and improves copy for their own sites.
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Judge an answer engine by its citations
The summary is the easy part; the sources are what you are trusting. Click through and check that each cited page says what the answer claims. Ask the same question in every language you work in, since coverage of non-English sources varies widely. Grok draws on posts from X, which helps with what people are saying now and less with settled facts.
Search for developers and researchers
Developers have a separate set of needs. Exa is a semantic search tool for finding relevant web sources from inside an application, while Consensus AI summarises millions of scientific papers into evidence-based answers. For academic literature, open the paper behind any answer rather than trusting the summary.
For content and ranking work, see the list of AI tools for marketers.
