Bottom line: Exa is search built for AI, not for browsing — it returns clean, machine-readable results and page content through an API. Its free tier is unusually concrete: $20 in credits when you sign up, plus $10 in credits every month, with no subscription. That is real working room for a prototype or a light research workflow, as long as you are comfortable using an API.
What is Exa?
Exa is a search engine designed for AI applications and agents. Instead of ten blue links for a person to click, its Search API finds pages by meaning (semantic or neural search), its Contents endpoint returns a page as clean text, highlights, or a summary, and its Answer endpoint returns a direct answer with citations. Developers plug it into chatbots, research agents, and retrieval pipelines so their AI can look things up on the live web.
What is actually free on Exa?
Exa does not sell a normal subscription for its core API; it meters usage. New accounts get $20 in free credits, and the free tier adds $10 in credits every month. After credits, usage is pay-as-you-go — for example, standard search requests are priced per 1,000 requests, with contents and answers metered separately. The exact per-request prices are published on Exa’s pricing page and can change, so check them before budgeting a production workload.
The honest limit is not the credits — it is the interface. There is no friendly consumer search homepage here. You (or your AI tool) call an API, or connect through Exa’s MCP server for AI coding and chat tools.
Free vs paid: where the line sits
| Feature | Free tier | Pay-as-you-go |
|---|---|---|
| Price | $0, with credits | Metered per request |
| Credits | $20 at signup + $10/month | Buy usage beyond credits |
| Search API | Included | Included |
| Contents and Answer | Included, drawn from credits | Metered separately |
| Subscription | None required | None — usage-based |
Pros and cons
Pros
- Semantic search built for AI apps and agents, not keyword matching
- Contents endpoint returns clean page text, highlights, and summaries
- Answer endpoint returns a direct answer with citations
- $20 in signup credits plus $10 in free credits every month
Cons
- API and MCP access for building search into your own tools — not a consumer app
- Costs are metered, so heavy automated use can spend credits quickly
- Per-request pricing varies by endpoint and search depth
Who is Exa’s free tier best for?
Developers, researchers, and builders adding web search to an AI app, agent, or research workflow who want to start on recurring free credits. It is a strong fit for prototyping a research assistant or grounding a chatbot in live sources. It is not for someone who just wants a nicer Google — use a consumer AI search tool for that.
Verdict
One of the clearest free offers in AI search for builders: defined credits, renewed monthly, no subscription trap. Just know you are signing up for an API, not an app.
Frequently asked questions
Is Exa free to use?
Yes, to start: $20 in signup credits plus $10 in credits every month on the free tier. Usage beyond your credits is metered pay-as-you-go.
Is Exa a search engine I can browse?
Not in the consumer sense. Exa is primarily an API (with an MCP server) that apps and AI agents call to search and fetch page content.
What can Exa return besides links?
Clean page text, highlights, summaries, and direct cited answers, depending on which endpoint you call.
Do I need a subscription?
No. Exa’s core API is usage-based rather than subscription-based; Websets, its list-building product, has separate plans.