Guardian vs Exa: search API pricing, indexes, and use cases
Exa and Guardian both give developers search APIs for AI products, but Exa puts more emphasis on semantic retrieval, specialized indexes, and deeper search modes. Guardian keeps the contract closer to general web search across multiple engines and verticals.
Guardian pricing
Guardian charges one credit per started block of 10 requested search results. The effective rates below assume each search requests 10 results or fewer and the included monthly credits are fully used.
| Plan / mode | Price | Included | Effective search price |
|---|---|---|---|
| Free | $0 | 1,000 credits | $0No card required. |
| Developer | $49/mo | 25,000 credits | $1.96 / 1KUp to 10 results uses 1 credit. |
| Growth | $249/mo | 200,000 credits | $1.245 / 1KUp to 10 results uses 1 credit. |
| Scale | $999/mo | 1,000,000 credits | $0.999 / 1KUp to 10 results uses 1 credit. |
Exa Search pricing
| Plan / mode | Price | Included | Effective search price |
|---|---|---|---|
| Instant Search | PAYG | Up to 10 results | $4 / 1KAdditional results above 10 are billed separately. |
| Fast / Auto Search | PAYG | Up to 10 results | $7 / 1KHigher base price than Instant. |
| Deep Search | PAYG | Up to 10 results | $12 / 1KDeeper retrieval mode. |
| Deep-Reasoning Search | PAYG | Up to 10 results | $15 / 1KHighest listed search tier. |
Exa lists base prices per 1,000 requests with up to 10 results. Its pricing page also lists a separate charge for additional results above 10.
Guardian has the lower base search rate
Guardian Developer costs about $1.96 per 1,000 searches requesting up to 10 results, Growth about $1.245, and Scale about $0.999. Exa Instant starts at $4 per 1,000 ten-result requests. Exa Fast/Auto is $7, Deep is $12, and Deep-Reasoning is $15.
That makes Guardian roughly half the price of Exa Instant even on Guardian's smallest paid tier. The gap grows at Guardian Growth and Scale. Price alone does not settle the choice because Exa's higher-priced modes are buying different retrieval behavior rather than more of the same call.
The indexes and retrieval model are different
Exa advertises a web index plus people, company, scholarly works, and coding-oriented search. Its product is built for semantic retrieval and offers search modes that trade latency and cost for deeper retrieval.
Guardian uses a multi-engine search layer and exposes verticals for news, images, videos, shopping, finance, travel, and discussions. The API returns a consistent result contract while the backend can query the configured search engines and apply Guardian's query and relevance logic.
A team doing company enrichment, people search, scholarly discovery, or code retrieval should test Exa's specialized indexes directly. A product that needs general web search, vertical search, and predictable low unit cost may get more value from Guardian.
Compare quality on your own query distribution
Semantic search vendors can look excellent on one workload and ordinary on another. Build a test set from real product traffic, label what a useful result looks like, and compare recall and ranking at the same result depth.
For an agent, also measure how much useful text each result contributes to the model. A cheaper request is not cheaper if the agent has to issue three follow-up searches to find the same evidence. The right benchmark is cost per successful task, not only cost per API call.
Which one fits your workload?
Choose Guardian when
- You need inexpensive general web search with predictable ten-result pricing.
- Your application uses news, shopping, travel, finance, image, video, or discussion verticals.
- You want REST, a TypeScript SDK, and MCP under one Guardian business account.
- Your retrieval quality is already good enough without a specialized semantic index.
Choose Exa when
- You need Exa's people, company, scholarly, or code-oriented indexes.
- You want to pay more for deep or deep-reasoning retrieval modes when the query requires it.
- Semantic retrieval quality matters more than the lowest possible per-request price for your workload.
Start with 1,000 free search credits.
The business API uses scoped API keys, monthly quotas, usage headers, and the same account across REST, the TypeScript SDK, and MCP.
Frequently asked questions
Is Guardian cheaper than Exa?
Yes for the published base ten-result search rates checked October 7, 2026. Guardian paid tiers work out to about $0.999 to $1.96 per 1,000 ten-result searches, while Exa Instant starts at $4 per 1,000 and its deeper modes cost more.
Why would I choose Exa if Guardian costs less?
Exa offers specialized indexes and multiple semantic/deep retrieval modes. Those can be more valuable than a lower call price for people search, company search, scholarly work, coding research, or tasks where deeper retrieval reduces follow-up searches.
Does Guardian have an MCP server like Exa?
Guardian has an MCP endpoint that can use the same business API-key and usage system as its REST API. Paid MCP enforcement can be enabled for production accounts.
Pricing sources
Vendor prices change. These comparisons use public pricing and documentation available on October 7, 2026. Check the linked vendor page before making a purchase decision.