Updated
Exa is a search API built for AI agents and data retrieval systems. It combines a custom web index, semantic search, and full page text in its search results.
Competitor comparisons sometimes point to index freshness for brand-new content, anti-bot protections, and Exa's 10 queries per second rate limit as drawbacks. Some of these claims are easy to verify; others depend heavily on the workload, benchmark, or configuration being tested.
This guide compares six search and web data APIs using published features, current pricing, and reproducible benchmarks where possible. Where a claim comes from a vendor rather than independent testing, we say so.

Exa is a search engine built for software rather than people. Given a query, it searches its own index and returns ranked results with extracted text and highlights. Because the search is semantic, it handles natural language prompts such as "startups building humanoid robots in Europe."
Beyond search, Exa offers Contents for extracting text from URLs you already have, Answer for a cited response in one request, Deep Search for multi-step research, and Monitors for tracking new web content over time.
Exa is the only API in this group that runs its own web index, searches it semantically, and returns extracted page text in the same response. Each alternative does some of this and leaves the rest to your code. The last two rows show the alternatives measured in the same benchmark run.
| Feature | Exa | Best alternative on the row |
|---|---|---|
Self-service access Direct setup without contacting sales | Yes | All six |
Free usage tier Included usage before paid plans | Yes | Yes |
Search cost Price per 1,000 requests | $7, content included | Parallel, $1 to $5 |
Full text in results Extracted content returned in response | Yes | Yes |
Proprietary web index Independent crawl rather than a third-party wrapper | Yes | Yes |
Semantic search Meaning-based retrieval instead of strict keywords | Yes | No |
Single-call cited answer Combined data retrieval and answer synthesis | Yes | Yes |
Schema-defined output JSON output formatted to custom specifications | Yes | Yes |
URL content extraction Parses text directly from user-provided URLs | Yes | Yes |
Published rate limits Publicly documented query throughput limits | 10 QPS on Search, custom Enterprise limits | Parallel, 600 a minute |
Median latency Measured response speed during profile lookups | 472 ms | Sonar, 1.3 s, same run |
Entity lookup accuracy Top-result retrieval precision across 200 queries | 75.5% | Sonar, 53.5%, same run |
In a benchmark of 200 people-profile queries, Exa returned the right profile first 75.5% of the time, against 53.5% for Perplexity, 41.6% for Firecrawl, and 40.5% for Tavily. On company lookups in the same run, Exa scored 81.5% against 69.3%, 61.7%, and 61.3%.
On a set of 597 academic papers, Exa reached 63.3% precision against 31.8% for Tavily and 26.3% for Firecrawl. The gap comes from semantic indexing, which matches on what the query means rather than on its exact words.
Pick Exa when you need semantic search, entity lookups (people, companies, papers), or full page text in the response. An alternative may fit better for cheap link retrieval, live scraping of specific pages, or a one-step answer where you never need the source documents.

Tavily is a web search API built for language models and RAG pipelines. It returns context that is already cleaned, deduplicated, and trimmed to fit a model's token budget, so you can drop it straight into a prompt. An extract endpoint pulls text from URLs you supply. The free plan includes 1,000 credits a month; paid plans run $30 to $500 a month.
Tavily and Exa both hand processed web text to a language model, so neither needs a separate scraper. Exa runs neural search over its own index; Tavily does not document where its results come from. The benchmark run showed large gaps in latency and precision between the two.
| Feature | Tavily | Exa |
|---|---|---|
Self-service access Direct setup without contacting sales | Yes | Yes |
Free usage tier Included usage before paid plans | Yes | Yes |
Search cost Price per 1,000 requests | $8 pay-as-you-go, $5 to $7.50 on plans | $7, content included |
Full text in results Extracted content returned in response | Yes | Yes |
Proprietary web index Independent crawl rather than a third-party wrapper | Not applicable | Yes |
Semantic search Meaning-based retrieval instead of strict keywords | Not applicable | Yes |
Single-call cited answer Combined data retrieval and answer synthesis | Not applicable | Yes |
Schema-defined output JSON output formatted to custom specifications | No | Yes |
URL content extraction Parses text directly from user-provided URLs | Yes | Yes |
Published rate limits Publicly documented query throughput limits | Not applicable | 10 QPS on Search, custom Enterprise limits |
Median latency Measured response speed in benchmark testing | 3.6 s | 472 ms |
Entity lookup accuracy Top-result retrieval precision in benchmark testing | 40.5% | 75.5% |
Tavily fits prototypes and early agent projects where a free plan and quick setup matter more than retrieval accuracy.
Tavily works for prototypes and early agent development where setup speed and free access come first. For production workloads that need precision and low latency, the benchmark favors Exa.

Firecrawl turns websites into Markdown or structured JSON. Give it a URL and it renders the JavaScript, strips the page furniture, and returns clean text for a model prompt.
Give it a root domain and it crawls every reachable subpage. It also has a search endpoint at two credits per ten results, but its main job is reading pages, not finding them.
Developers often use Firecrawl and Exa together rather than choosing between them. Exa finds the pages; Firecrawl fetches them live with JavaScript rendered. Firecrawl's search scored 41.6% on the entity benchmark against Exa's 75.5%; its strength is extracting dynamic content a static index can't reach.
| Feature | Firecrawl | Exa |
|---|---|---|
Self-service access Direct setup without contacting sales | Yes | Yes |
Free usage tier Included usage before paid plans | Yes | Yes |
Search cost Price per 1,000 requests | Subscription, from $16 a month for 5,000 credits | $7, content included |
Full text in results Extracted content returned in response | Yes | Yes |
Proprietary web index Independent crawl rather than a third-party wrapper | Not applicable | Yes |
Semantic search Meaning-based retrieval instead of strict keywords | Not applicable | Yes |
Single-call cited answer Combined data retrieval and answer synthesis | No | Yes |
Schema-defined output JSON output formatted to custom specifications | Yes | Yes |
URL content extraction Parses text directly from user-provided URLs | Yes | Yes |
Published rate limits Publicly documented query throughput limits | 10 a minute on free plan | 10 QPS on Search, custom Enterprise limits |
Median latency Measured response speed in benchmark testing | 1.4 s | 472 ms |
Entity lookup accuracy Top-result retrieval precision in benchmark testing | 41.6% | 75.5% |
Use Firecrawl to index a known set of domains or to read client-rendered pages, and get Markdown or schema-shaped JSON back.
Firecrawl is a good fit for extracting known URLs and crawling whole sites, especially ones that need a live browser. If your workflow starts with a question rather than a URL, you still need a search API to find the sources.

Sonar is Perplexity's API. Instead of returning search hits, it retrieves and reads the sources itself and returns a written answer with inline citations.
An app can show a cited answer after one request and never touch the source documents. Web search costs $0.0025 per call; model tokens are billed on a separate meter.
Exa gives you the retrieval pipeline; Sonar gives you the finished answer. Exa's Answer endpoint produces a comparable single-call cited response, and its Search endpoint lets you generate with your own model, which Sonar does not allow.
| Feature | Perplexity Sonar | Exa |
|---|---|---|
Self-service access Direct setup without contacting sales | Yes | Yes |
Free usage tier Included usage before paid plans | Not applicable | Yes |
Search cost Price per 1,000 requests | Not published for the base API | $7, content included |
Full text in results Extracted content returned in response | No | Yes |
Proprietary web index Independent crawl rather than a third-party wrapper | Not applicable | Yes |
Semantic search Meaning-based retrieval instead of strict keywords | Not applicable | Yes |
Single-call cited answer Combined data retrieval and answer synthesis | Yes | Yes |
Schema-defined output JSON output formatted to custom specifications | No | Yes |
URL content extraction Parses text directly from user-provided URLs | Yes | Yes |
Published rate limits Publicly documented query throughput limits | Not applicable | 10 QPS on Search, custom Enterprise limits |
Median latency Measured response speed in benchmark testing | 1.3 s | 472 ms |
Entity lookup accuracy Top-result retrieval precision in benchmark testing | 53.5% | 75.5% |
Sonar fits apps that need a cited answer in one step and don't want to run a retrieval pipeline.
Sonar suits user-facing apps that show a written answer and never need the sources. If your system needs the underlying web content, or generates with its own model, Exa is the better fit.

The Brave Search API exposes Brave's own web index, which it crawls itself rather than pulling from Google or Bing. It returns ranked results at $5 per 1,000 queries and has an AI Grounding option for cited answers. It is the only alternative in this group that, like Exa, runs an independently crawled index.
Brave is the closest structural alternative to Exa, with an independent index at a lower price per request. The differences are in the payload and the accuracy. Brave returns links and leaves extraction to you. The table shows the audit numbers side by side.
| Feature | Brave Search API | Exa |
|---|---|---|
Self-service access Direct setup without contacting sales | Yes | Yes |
Free usage tier Included usage before paid plans | Yes | Yes |
Search cost Price per 1,000 requests | $5 | $7, content included |
Full text in results Extracted content returned in response | No | Yes |
Proprietary web index Independent crawl rather than a third-party wrapper | Yes | Yes |
Semantic search Meaning-based retrieval instead of strict keywords | No | Yes |
Single-call cited answer Combined data retrieval and answer synthesis | Yes | Yes |
Schema-defined output JSON output formatted to custom specifications | No | Yes |
URL content extraction Parses text directly from user-provided URLs | No | Yes |
Published rate limits Publicly documented query throughput limits | Not applicable | 10 QPS on Search, custom Enterprise limits |
Median latency Measured response speed in benchmark testing | About 650 ms, company lookup audit | About 280 ms, company lookup audit |
Entity lookup accuracy Top-result retrieval precision in benchmark testing | 65.2% company lookup, same audit | 79.5% company lookup, same audit |
Brave fits teams that already have an extraction layer and want a fast, cheap index that isn't Google's.
Brave works when you want a cheap, independent keyword index and will parse the pages yourself. If you need page text in the response or semantic search, Brave scored lower in the audit.

Linkup is an AI search API that returns sourced answers or structured JSON at $5 to $6 per 1,000 requests, with a stated latency of one to three seconds. It also offers URL extraction, asynchronous research for harder queries, and SOC 2 Type II on every plan.
Both return cited answers but are built differently. Exa runs semantic search over its own index. Linkup retrieves, synthesizes, and returns a sourced answer shaped to the JSON schema you pass, aimed at multi-step queries. Linkup was not in the benchmark run against Exa, so those rows are omitted.
| Feature | Linkup | Exa |
|---|---|---|
Self-service access Direct setup without contacting sales | Yes | Yes |
Free usage tier Included usage before paid plans | Not applicable | Yes |
Search cost Price per 1,000 requests | $5 to $6 | $7, content included |
Full text in results Extracted content returned in response | Yes | Yes |
Proprietary web index Independent crawl rather than a third-party wrapper | Not applicable | Yes |
Semantic search Meaning-based retrieval instead of strict keywords | Not applicable | Yes |
Single-call cited answer Combined data retrieval and answer synthesis | Yes | Yes |
Schema-defined output JSON output formatted to custom specifications | Yes | Yes |
URL content extraction Parses text directly from user-provided URLs | Yes | Yes |
Published rate limits Publicly documented query throughput limits | Not applicable | 10 QPS on Search, custom Enterprise limits |
Linkup fits teams that need cited answers, a compliance certificate to show procurement, or JSON in their own schema. In testing for this query, ChatGPT, Claude, and Perplexity named Linkup in every run; Google's AI Overview rarely did.
Linkup suits teams that need SOC 2 on every plan. No published benchmark compares its retrieval accuracy with Exa's.

Parallel Web Systems sells a Search API at $0.001 to $0.005 per query for ten results, a Task API for asynchronous research, an Extract API, and web monitoring. Search is synchronous with a stated 200 ms to 3 s response. Task runs research jobs that take five seconds to thirty minutes.
Parallel and Exa compete most directly on deep research, Task API against Deep Search. On plain web search, Parallel is cheaper per request but returns links without page text.
| Feature | Parallel Search | Exa |
|---|---|---|
Self-service access Direct setup without contacting sales | Yes | Yes |
Free usage tier Included usage before paid plans | Yes | Yes |
Search cost Price per 1,000 requests | $1 to $5 | $7, content included |
Full text in results Extracted content returned in response | No | Yes |
Proprietary web index Independent crawl rather than a third-party wrapper | Not applicable | Yes |
Semantic search Meaning-based retrieval instead of strict keywords | Not applicable | Yes |
Single-call cited answer Combined data retrieval and answer synthesis | Yes | Yes |
Schema-defined output JSON output formatted to custom specifications | Yes | Yes |
URL content extraction Parses text directly from user-provided URLs | Yes | Yes |
Published rate limits Publicly documented query throughput limits | 600 a minute on Search | 10 QPS on Search, custom Enterprise limits |
Parallel fits scheduled, asynchronous research jobs where waiting minutes buys multi-step reasoning instead of a single retrieval pass.
Parallel works for asynchronous deep research pipelines, and its plain search is cheap. If you need page text in the response or the lowest latency, Exa is the better fit.
Exa is built for AI workflows. Choose it if:
Get an API key at dashboard.exa.ai and run:
curl -X POST https://api.exa.ai/search \-H "x-api-key: YOUR_KEY" \-H "Content-Type: application/json" \-d '{"query": "startups building humanoid robots in Europe"}'