Search AI apps

Multilingual AI search that turns answers into slides and mind maps.

An AI search and answer engine built around multilingual research — it searches across 25+ languages and synthesizes cited answers. Beyond text, Felo can generate editable presentations (AI PPT), mind maps, and agent workflows from a single query, making it a research-to-output tool rather than a pure search box.

Managed multimodal search over your text, PDFs, images, and video.

A fully managed search engine that indexes text, PDFs, tables, images, and video across 100+ languages without hand-tuning embeddings or a multi-stage pipeline. The Berlin team is best known for its open-source mxbai embedding and reranking models, which the hosted product builds on. Access it via dashboard, Python/TypeScript SDKs, or MCP.

AI search and research copilot with cited answers.

An AI search and research assistant that returns cited, fact-checked answers across the web, YouTube, and PDFs, with dedicated modes for academic literature review (Liner Scholar) and professional writing (Liner Write). It grew out of a popular web-highlighting tool and now spans browser, mobile, desktop, and a browser extension. The free tier covers everyday search; Pro unlocks more models, file uploads, and unlimited copilot use.

High-accuracy web search and research APIs for AI agents.

Parallel gives AI agents programmatic access to the web through a suite of APIs — a Search API, a Task API for structured extraction, and a Deep Research API for multi-hop questions — all served from its own proprietary web index and retrieval stack. It optimizes for high-signal, low-noise context fed straight into a model rather than ranking URLs for human clicks. Pricing is per request (the Search API starts at $0.005 per call) with a free allotment to start.

Open-source AI answer engine with a generative UI.

A self-hostable answer engine that returns comprehensive, cited answers with a generative UI that adapts per query rather than a list of links. It offers a Quick mode and an Adaptive multi-step research mode, saves searchable history, and is provider-agnostic across LLM and search backends. Apache-2.0, deployable to Vercel in one click, with a free hosted instance at morphic.sh.

Production-grade web search API for AI agents.

A web search API built for LLMs and agents. Linkup returns sourced, cited answers with full-text snippets in seconds, plus a Fetch endpoint for URL extraction and a Research endpoint that runs multi-step, chain-of-thought deep research. It integrates via MCP and SDK wrappers for OpenAI, LangChain, CrewAI, and more, and offers zero-data-retention enterprise hosting.

Search-foundation APIs — Reader, embeddings, and reranker — for grounding LLMs.

A suite of search-foundation APIs for retrieval and RAG: a Reader that turns any URL or web search into LLM-ready markdown, multilingual multimodal embeddings, and a reranker. One key spans every service, the Reader is open source, and the embedding models are also released as open weights for self-hosting.

Paid, ad-free search engine with a built-in multi-model AI assistant.

Kagi is a subscription-based, ad-free search engine that puts result quality and privacy ahead of advertising. Every paid plan now includes Kagi Assistant, which lets you chat with leading models from OpenAI, Anthropic, Google, Mistral, and others against a fair-use token budget. Kagi also ships features like the Universal Summarizer and customizable result ranking.

Multi-model AI search and enterprise research agents.

You.com is an AI search and answers product offering multi-model chat over OpenAI, Anthropic, and Google models on web and mobile. It has shifted toward enterprise with ARI, a research agent that synthesizes cited reports across hundreds of sources, alongside Search and Research APIs for developers.

Search API built for AI agents. First-class in most agent frameworks.

Search-as-a-tool for LLM agents — returns scrape-friendly results tuned for retrieval rather than ranking. Native integrations across LangChain, LangGraph, CrewAI, and the major agent surfaces.

AI-augmented search. Cited answers, consumer + Sonar API.

Hybrid search engine that returns synthesized answers with inline citations rather than a list of links. Ships a consumer product and the Sonar API for adding cited search to your own apps and agents.

Neural search API. Find pages by meaning, not keywords.

Semantic search engine that indexes the open web with embeddings — pass a description, get matching pages. Strong for research-style queries and find-similar workflows; formerly known as Metaphor.

Independent search index. Privacy-respecting, non-Google.

API access to Brave's independently-crawled search index. Useful when you need a non-Google source, want to dodge upstream rate limits, or have privacy posture requirements that rule out scraping competitors.