Best AI Search & Retrieval APIs for startups
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- 1. Exa80/100 agent-readiness
Search engine and API built for AI agents, offering semantic web search, content retrieval, and agentic research tools.
- 2. Brave Search API76/100 agent-readiness
Independent web index search API with Search and Answers plans, SOC 2 Type II attested, and an official MCP server for AI agents.
- 3. Serper59/100 agent-readiness
Low-cost, high-speed Google Search API (SERP data) for AI agents, RAG pipelines, and SEO tools, billed per-query with no subscription.
- 4. Perplexity Sonar API87/100 agent-readiness
Usage-based Sonar model API for real-time, citation-backed web search and Q&A, alongside standalone Search and Embeddings APIs.
- 5. Tavily79/100 agent-readiness
Search API built for AI agents, providing real-time web search, extraction, crawling, mapping, and research endpoints.
FAQ
What's the best AI Search & Retrieval APIs tool for startups?
Based on Crail's agent-readiness score, Exa ranks highest among tools serving startups (80/100), among 6 vendors tracked in this category that fit startups.
Which is cheapest to start with?
Brave Search API has a free tier.
Can I buy without talking to sales?
Yes — Brave Search API can be purchased self-serve without a sales call.