Exa
AI-powered web search API built for LLMs and AI agents
About Exa
Exa (formerly Metaphor) is a search engine and API designed specifically for AI applications. It uses embeddings-based neural search to retrieve high-quality, semantically relevant web content, enabling developers to ground LLM outputs in accurate, up-to-date information from across the web.
Pros & Cons
Pros
- Neural search finds deep, niche content that traditional search engines miss
- Exa Instant delivers sub-200ms response times ideal for real-time AI agents
- Clean content retrieval eliminates the need for complex web scraping pipelines
- Purpose-built for LLM and AI agent integration with developer-friendly APIs
- Websets feature enables powerful lead generation and market research at scale
- Free tier with credits allows developers to test before committing
Cons
- API-only product with no consumer search interface — requires development skills
- Pricing can scale quickly for high-volume use cases
- Smaller web index compared to Google or Bing for some query types
- Occasional hallucination or relevance issues noted in user reviews
- Websets plans are separate from API pricing, adding cost complexity
Key Features
Neural Search API
Embeddings-based semantic search that understands meaning, not just keywords, returning highly relevant results from across the web
Exa Instant
Sub-200ms search engine optimized for real-time agentic workflows, up to 15x faster than competitors
Content Retrieval
Returns clean, parsed HTML content from search results without the complexity of web scraping
Find Similar
Discover pages semantically similar to a given URL, useful for competitive analysis and content discovery
Answer Endpoint
Get direct answers to questions grounded in real web sources with citations
Research Automation
Automates in-depth web research with iterative querying, returning structured JSON results clustered by topic
Websets
Build and enrich datasets about people, companies, or entities at scale for sales prospecting and market research
Company Search
Specialized endpoint for finding and enriching company data with firmographic information
Advanced Filtering
Filter results by date ranges, domain inclusions/exclusions, and content types for precise targeting
Pricing
- $10 in free credits
- Neural search API access
- Content retrieval
- Find similar
- Community support
- 8,000 credits per month
- 1 seat
- Up to 100 results per Webset
- 10 enrichment columns
- 2 concurrent searches
- 100,000 credits per month
- 10 seats
- Up to 1,000 results per Webset
- 50 enrichment columns
- 10 concurrent searches
- Custom credits
- Unlimited results and seats
- Unlimited enrichment columns
- Volume discounts
- Enterprise-grade security and support
Best For
AI Agent Web Access
Give AI agents and chatbots real-time access to web information for grounded, accurate responses
Research Automation
Automate in-depth research workflows that gather, synthesize, and cite information from across the web
Lead Generation & Prospecting
Use Websets to build enriched datasets of companies and contacts matching specific criteria at scale
RAG Pipeline Integration
Feed retrieval-augmented generation systems with relevant, up-to-date web content for knowledge-intensive tasks
Competitive Intelligence
Monitor competitors and discover similar companies or products using semantic similarity search
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