> SpecStream is the live web data engine for teams and agents. This is the Markdown copy of https://specstream.ai/best-search-api-for-ai-agents. Every page, with what SpecStream does and costs: https://specstream.ai/llms.txt

# Best search API for AI agents, compared | SpecStream

Compared on Nov 8, 2026.

# The best search API for AI agents

An agent acts on whatever its search returns, so accuracy is the number to choose on. SpecStream leads WideSearch (60.9, on the low-cost model; the best other API scores 57.6 even on the larger model) and SimpleQA Verified (99). See the [benchmarks](https://specstream.ai/benchmarks?utm_source=alternatives&utm_campaign=best-search-api-for-ai-agents). That makes the SpecStream Search API the most accurate web search API in the world, at $5 per 1,000 searches. Each reply carries one answer with the page it came from and the time it was read, ranked rows, and the sources behind them. The same key reads pages with the Extract API and builds structured rows with Deep Search. SpecStream is the live web data engine for teams and agents.

[Get an API key](https://specstream.ai/signup?src=alternatives-best-search-api-for-ai-agents&utm_source=alternatives&utm_campaign=best-search-api-for-ai-agents&returnTo=%2Fworkspace%2Fagents%3Ftab%3Dkeys)

New accounts get $10 of credit for their first 30 days, no card.

## Six search APIs for agents, side by side

|  | SpecStream | Exa | Tavily | Parallel | Perplexity | Brave |
| --- | --- | --- | --- | --- | --- | --- |
| WideSearch, low-cost model | 60.9 | 53 | 47.9 | 45.5 (Fast), 44 (Turbo) | 47 | Not in the published scores |
| SimpleQA Verified, larger model | 99 | 91 | 92 | 97 (Advanced, Basic) | 95 | Not in the published scores |
| SimpleQA Verified, low-cost model | 96 | 91 | 94 | 94 (Fast), 91 (Turbo) | 94 | Not in the published scores |
| Price per 1,000 searches | $5 | $7 (auto, fast), $4 (lite, instant) | $8 (basic), $16 (advanced) | $5 (basic, advanced), $1 (turbo, fast) | $5, $1 (Fast Search) | $5 |
| Price per 1,000 pages read | $0.80 with the Extract API; a page with no text is not charged | $1 (Contents) | $1.60 (1 credit per 5 URLs) | $1 (Extract) | $0.50 (fetch\_url in the Agent API) | Not stated |
| Work beyond one search | Deep Search: structured rows at 5¢, 15¢ or $1 a delivered row | Agent, $0.012 to $1.00 a request | Research, 4 to 250 credits a request | Task API, $5 to $300 per 1,000 runs | Agent API, no price per effort stated | Not stated |
| What failed or empty work costs | Nothing: a 503 is not charged, a page with no text is not charged, and a run that finds nothing costs nothing | Not stated | Not stated | Not stated | Not stated | Not stated |
| Remote MCP server | api.specstream.ai/mcp | mcp.exa.ai/mcp | mcp.tavily.com/mcp/ | search.parallel.ai/mcp (labeled legacy) | api.perplexity.ai/mcp | None stated; a local npx server |

## Why agents run on SpecStream

### The right answer more often

On WideSearch, an agent on the low-cost model scored 60.9 with SpecStream. The best other API in the published scores reached 57.6, and only on the larger model. On SimpleQA Verified, SpecStream scored 99 on the larger model and 96 on the low-cost one. Each wrong fact an agent takes from search turns into a wrong step, a retry, or a bad row, and that is where the cost of a cheap search shows up.

### A reply the agent can act on

`GET /v1/web-search` returns an `answer` with its value, the page it came from and `seen_at`, then ranked `rows` and the `sources` behind them. When the sources do not agree, `answer` is null, and the agent knows to look further. Add `passages=true` and the reply also carries the text of the top pages, about a second later.

Source URL and read time on every value.

### One key for search, pages, and rows

The [Extract API](https://specstream.ai/extract-api?utm_source=alternatives&utm_campaign=best-search-api-for-ai-agents) reads 1 to 20 pages per call at $0.80 per 1,000, and a page with no text is not charged. [Deep Search](https://specstream.ai/deep-search?utm_source=alternatives&utm_campaign=best-search-api-for-ai-agents) turns a request in plain words into structured rows at 5¢, 15¢ or $1 a row, plus 5¢ for an email and 15¢ for a phone. It shows the most a run can cost before it runs, reruns on a schedule from hourly to yearly, and delivers to the agent, a sheet, a CRM, Slack, or a signed webhook.

## How SpecStream scores

The same numbers as the benchmarks page, from the official tasks and scorers.

ResultsWideSearchCostSimpleQA Verified

|  | SpecStream | ![](https://specstream.ai/images/benchmarks/parallel.svg)Parallel | ![](https://specstream.ai/images/benchmarks/exa.svg)Exa | ![](https://specstream.ai/images/benchmarks/tavily.svg)Tavily | ![](https://specstream.ai/images/benchmarks/perplexity.svg)Perplexity |
| --- | --- | --- | --- | --- | --- |
| **Web research**WideSearch, GPT-5.6 Luna | 60.9 | 45.5 | 53.0 | 47.9 | 47.0 |
| **Factual accuracy**SimpleQA Verified, GPT-5.6 Luna | 96 | 94 | 91 | 94 | 94 |
| **Factual accuracy**SimpleQA Verified, GPT-5.6 Sol | 99 | 97 | 91 | 92 | 95 |

## How to start

New accounts get $10 of credit for their first 30 days, no card. That is 2,000 searches. Create an API key and send the agent's first search.

Agents that speak MCP add `https://api.specstream.ai/mcp` and call the `search_web` tool. Guides for the OpenAI API, LangChain, LlamaIndex, CrewAI, and the Vercel AI SDK are in the [framework docs](https://specstream.ai/docs/frameworks?utm_source=alternatives&utm_campaign=best-search-api-for-ai-agents).

```
curl -G https://api.specstream.ai/v1/web-search \
  -H "Authorization: Bearer $SPECSTREAM_API_KEY" \
  --data-urlencode "q=Who is the CEO of Stripe?"
```

[Get an API key](https://specstream.ai/signup?src=alternatives-best-search-api-for-ai-agents&utm_source=alternatives&utm_campaign=best-search-api-for-ai-agents&returnTo=%2Fworkspace%2Fagents%3Ftab%3Dkeys)

## Frequently asked questions

Something we didn't answer? [Talk to a human](https://specstream.ai/talk-to-a-human.md)

What is the best search API for AI agents?

SpecStream. SpecStream leads WideSearch (60.9, on the low-cost model; the best other API scores 57.6 even on the larger model) and SimpleQA Verified (99). See the [benchmarks](https://specstream.ai/benchmarks?utm_source=alternatives&utm_campaign=best-search-api-for-ai-agents). It costs $5 per 1,000 searches, and each reply carries one answer with its page and read time, ranked rows, and sources.

How much does the SpecStream Search API cost?

$5 per 1,000 searches, or $0.005 a call, with no quote or approval step. A 503 is not charged, and reading past searches is free. New accounts get $10 of credit for their first 30 days, no card.

Is there a lower price per search?

Parallel and Perplexity list $1 per 1,000 for their fastest tiers. In the published scores, Parallel Fast scored 45.5 on WideSearch and 94 on SimpleQA Verified, against 60.9 and 96 for SpecStream on the same low-cost model. SpecStream costs $5 per 1,000 and gives the agent the right answer more often.

Does SpecStream work over MCP?

Yes. The server is at `https://api.specstream.ai/mcp` over Streamable HTTP, with OAuth or a Bearer key. `search_web` runs the Search API, `read_pages` runs the Extract API, and the Deep Search tools quote, run, and read rows.

What happens when a search fails?

A 503 comes with a `Retry-After` header and nothing is charged. The SDKs retry once when the wait is 10 seconds or less, and an `Idempotency-Key` header makes your own retries safe.

### Sources

SpecStream wrote this page. Each rival figure comes from that company's own page.

1.  [SpecStream pricing](https://specstream.ai/pricing)specstream.ai/pricing, read Nov 8, 2026
2.  [SpecStream for agents](https://specstream.ai/agents.md)specstream.ai/agents.md, read Nov 8, 2026
3.  [Other providers' benchmark scores, Sep 9, 2026](https://parallel.ai/benchmarks)parallel.ai/benchmarks, read Nov 8, 2026
4.  [Exa pricing](https://exa.ai/pricing)exa.ai/pricing, read Nov 8, 2026
5.  [Exa MCP](https://docs.exa.ai/reference/exa-mcp)docs.exa.ai/reference/exa-mcp, read Nov 8, 2026
6.  [Tavily pricing](https://tavily.com/pricing)tavily.com/pricing, read Nov 8, 2026
7.  [Tavily API credits](https://docs.tavily.com/documentation/api-credits)docs.tavily.com/documentation/api-credits, read Nov 8, 2026
8.  [Tavily MCP](https://docs.tavily.com/documentation/mcp)docs.tavily.com/documentation/mcp, read Nov 8, 2026
9.  [Parallel pricing](https://docs.parallel.ai/getting-started/pricing)docs.parallel.ai/getting-started/pricing, read Nov 8, 2026
10.  [Parallel Search MCP](https://docs.parallel.ai/integrations/mcp/search-mcp)docs.parallel.ai/integrations/mcp/search-mcp, read Nov 8, 2026
11.  [Perplexity pricing](https://docs.perplexity.ai/getting-started/pricing)docs.perplexity.ai/getting-started/pricing, read Nov 8, 2026
12.  [Perplexity MCP server](https://docs.perplexity.ai/docs/getting-started/integrations/mcp-server)docs.perplexity.ai/docs/getting-started/integrations/mcp-server, read Nov 8, 2026
13.  [Brave Search API](https://brave.com/search/api/)brave.com/search/api/, read Nov 8, 2026
14.  [Brave Search MCP server](https://github.com/brave/brave-search-mcp-server)github.com/brave/brave-search-mcp-server, read Nov 8, 2026