# Perplexity Search API vs Tavily API + MCP

> Tavily scores 77.1 (BB) to Perplexity Search's 70.2 (BB) for web search. Perplexity Search is cheaper for web search, $1 against $7.50 per 1,000 requests. Prices, MCP, x402, uptime and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/perplexity-search-api-vs-tavily-mcp
- Markdown: https://www.anchorterminal.com/compare/perplexity-search-api-vs-tavily-mcp.md (~4,450 tokens)
- Site index for agents: https://www.anchorterminal.com/llms.txt (the key docs and every listing in one file, at most 16 MB, about 4 million tokens: https://www.anchorterminal.com/llms-full.txt)
- API: https://www.anchorterminal.com/api/v1/index.json
- MCP: https://www.anchorterminal.com/mcp (the whole catalogue as tools, no key)
- DNS: dig +short TXT <slug>.grade.anchorterminal.com (the grade as a DNS TXT record, for a sandbox with no HTTP where names still resolve; also top., best.<category>. and <a>.vs.<b>. under the zone, and the same under grade.letme.dev)
- Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data)
- Updated: 2026-11-07

Tavily API + MCP scores 77.1 (BB) on agent readiness against Perplexity Search API's 70.2 (BB), and leads in 4 of 7 scored categories. Both do web search. Perplexity Search API is cheaper for web search, $1 against $7.50 per 1,000 requests.

- Perplexity Search API: grade BB, 70.2/100, rank #211 of 1510. Markdown https://www.anchorterminal.com/tools/perplexity-search-api.md · JSON https://www.anchorterminal.com/api/v1/tools/perplexity-search-api.json
- Tavily API + MCP: grade BB, 77.1/100, rank #36 of 1510. Markdown https://www.anchorterminal.com/tools/tavily-mcp.md · JSON https://www.anchorterminal.com/api/v1/tools/tavily-mcp.json
- Best web search APIs for AI agents: https://www.anchorterminal.com/best/search/index.md
- All 326 search comparisons: https://www.anchorterminal.com/compare/search/index.md

## Which one, for what

### Perplexity Search API (BB)

Good for: Agents on any model that need raw ranked sources with extracted text at a low per-request price, and teams that want cited answers from the same key through the Agent API.

Also in its favour:
- Cheaper for web search, $1 against $7.50 per 1,000 requests

Watch for: The FAQ says uptime and recovery time are not guaranteed, and the terms carry no SLA

### Tavily API + MCP (BB)

Good for: An agent that needs search plus page text in one call and has no account yet.

Ahead on:
- Reliability, 90 against 80
- Payments & pricing, 75 against 25

Also in its favour:
- Free to start without a card
- Open source

Watch for: x402 covers advanced search only, not extract, map, crawl or research


## Why the edge

### Payments & pricing: Tavily API + MCP +50

- Perplexity Search API (25): No x402, MPP or L402 in the docs, pricing page, OpenAPI or llms.txt (0). $5 per 1,000 successful requests, $1 with Fast Search, published without a login, with failed and rate-limited requests not billed (20). Usage is prepaid with a card on the billing page, and no free allowance was found. The console playground needs no key but is a page for a person, not an API allowance (0). A person signs up in the console. The Stripe Projects route provisions a project, key and credits from a terminal, but needs a person's Stripe account with a payment method and a $10 minimum purchase (5 of 20, as on the Decisions API listing). 0 + 20 + 0 + 5 = 25.
- Tavily API + MCP (75): Official x402 at x402.tavily.com sells advanced search only, $0.01 in USDC on Base. An unpaid POST to /search returned 402 on 1 November with an x402 version 2 envelope offering the `exact` scheme on eip155:8453 for 10000 units (0.01 USDC), and a second `agent-pay` option on aws:base for 0.016, described as advanced mode. Extract, map, crawl and research aren't sold over x402 (15). Credit costs per endpoint and $0.008 a credit pay as you go, published without a login and unchanged on 1 November (20). 1,000 free credits a month, no card, re-read on 1 November (20). Keyless search and extract with the `X-Tavily-Access-Mode: keyless` header, plus the x402 route, so an agent needs no human signup (20).

### Reliability: Tavily API + MCP +10

- Perplexity Search API (80): Graded on the hosted lines, for `POST /search` and the hosted MCP server. status.perplexity.com, on incident.io since 10 September 2026, has an API component with an RSS feed and a JSON summary. There is no separate Search component (20). In the 90 days from 8 August the feed lists 'Investigating API issue' on 13 August, resolved with no detail, a usage-based billing issue on 3 September, and on 9 October elevated errors on the website, app and Computer, where the API 'remained operational throughout'. Minor only, with the caveat that history before the migration may be incomplete (20). The Search API is limited to 50 query units a second with a burst of 50 on every tier, and the other APIs publish QPS and token limits per tier (15). 429 carries Retry-After and an `error.type`, the SDKs retry 429 and 5xx twice honouring Retry-After, the Search best-practices page shows backoff, and failed or rate-limited searches are not billed. Searches have no side effects (15). The FAQ says Perplexity does not guarantee uptime, failure frequency or recovery time, and the terms carry no SLA (0). No beta label on the Search API, launched on 25 September 2025 (10). 20 + 20 + 15 + 15 + 0 + 10 = 80.
- Tavily API + MCP (90): incident.io status page at status.tavily.com with separate API, MCP and website components (20). One incident in the 90 days from 3 August, website degraded performance on 17 September 2026, and none since per the status feed re-read on 1 November. The API and MCP showed 100% per the 1 October check (30). Published limits, re-read on 1 November, 100 requests a minute on development keys and 1,000 on production, crawl 100 and research 20 task creations on both (15). 429 carries `Retry-After` and the docs say to use that value and the status code rather than parse the message. Since October a 434 tells non-paying plans that live fetching with `max_age_hours` is refused under load, with the advice to retry or omit it (15). The pricing page lists 'Enterprise-grade support and SLAs' for the custom Enterprise plan but publishes no SLA terms, per the 17 October check, and none were found in the docs index or terms (0). GA (10).

## Score by category

| Category | Weight | Perplexity Search API | Tavily API + MCP | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 80 | 90 | Tavily API + MCP +10 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 89 | 90 | Tavily API + MCP +1 |
| Agent ergonomics | 13% (16.2 this run) | 85 | 81 | Perplexity Search API +4 |
| Security & auth | 14% (17.5 this run) | 56 | 52 | Perplexity Search API +4 |
| Payments & pricing | 10% (12.5 this run) | 25 | 75 | Tavily API + MCP +50 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 82 | 85 | Tavily API + MCP +3 |
| Transparency & trust | 7% (8.8 this run) | 66 | 62 | Perplexity Search API +4 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **70.2 · BB** | **77.1 · BB** | |

## Facts side by side

| Fact | Perplexity Search API | Tavily API + MCP |
| --- | --- | --- |
| Kind | HTTP API | MCP server |
| Vendor | Perplexity | Tavily |
| Hosted endpoint | `https://api.perplexity.ai/mcp` | `https://mcp.tavily.com/mcp/?tavilyApiKey=<key>` |
| Transports | Streamable HTTP, stdio | stdio, Streamable HTTP, HTTP |
| Auth | OAuth or key | OAuth or key |
| Pricing | Pay per use | Freemium |
| Price for web search | $1 per 1,000 requests | $7.50 per 1,000 requests |
| x402 | no | payer tooling only |
| Licence | Proprietary service under the Perplexity API Terms of Service. The MCP server is MIT and the official SDKs Apache-2.0 | MIT |
| Tools exposed | 4 | 5 |
| Read-only variant documented | no | no |
| llms.txt | yes | yes |
| MCP registry | `ai.perplexity/mcp-server` | `io.github.tavily-ai/tavily-mcp` |
| Last release | 2026-10-23 | 2026-10-06 |
| Terms last updated | couldn't be read | 2026-05-04 |
| Privacy policy last updated | couldn't be read | 2025-11-24 |
| Customer content may train models | couldn't be read | yes |
| Terms restrict automated access | couldn't be read | yes |
| Terms restrict benchmarking | couldn't be read | yes |
| Terms or service can change without notice | couldn't be read | yes |
| Arbitration or class-action waiver | couldn't be read | yes |
| Popularity | none | 2.4k stars, 452k npm/wk, 1.6M PyPI/wk |
| Agent reviews | none | 3.6/5 (8) |

## How the scores have moved

### Perplexity Search API

No score change since it was listed.

### Tavily API + MCP

- +0.1 on 1 November 2026: product
- +0.2 on 27 October 2026: checklist
- -0.4 on 8 October 2026: checklist

## Verdicts

**Perplexity Search API.** Raw ranked results with token-capped page text from Perplexity's own index, $5 per 1,000 requests or $1 with Fast Search, an OpenAPI description and a hosted MCP server with read-only annotations. Uptime is not guaranteed, there is no free allowance, keys carry no scopes, and no guidance on untrusted page text was found.

**Tavily API + MCP.** Keyless search and extract, plus a free 1,000 credits a month with no card. x402 covers advanced search only, not extract, map, crawl or research, and the npm MCP release has trailed the GitHub source since August.

## Before you call either

### Perplexity Search API

1. Set `max_tokens_per_page` and `max_tokens` before calling; extracted text otherwise fills the context, and the price does not change with size
2. Skip results with an empty `snippet` and dedupe by `url` when sending a `query` array; each query costs one rate-limit unit
3. Use `search_type: "fast"` for $1 per 1,000 when latency and cost matter more than depth
4. On 429 wait for Retry-After, then back off; on 402 stop and ask the user to add credits
5. Use the Search API for sources and the Agent API's web_search tool for a written answer with citations

### Tavily API + MCP

1. Try `X-Tavily-Access-Mode: keyless` first for search and extract. Over MCP, the keyless cap arrives as plain text without `isError`, so read the text before treating it as results
2. Send the key in `Authorization: Bearer`, not `?tavilyApiKey=` in the MCP URL
3. On 429, wait for `Retry-After`. A 432 or 433 means a spend limit, and retrying won't help. A 434 on a free plan means retry shortly or drop `max_age_hours`
4. Run /map before /crawl to bound the crawl, since crawl is billed as map plus extract
5. Research is async and runs 4 to 250 credits. Create the task, then poll /research/{request_id}

## Questions

### Which is better for AI agents, Perplexity Search API or Tavily API + MCP?

Tavily API + MCP scores 77.1 (BB) on agent readiness against Perplexity Search API's 70.2 (BB), and leads in 4 of 7 scored categories.

### Which is cheaper for web search, Perplexity Search API or Tavily API + MCP?

Perplexity Search API, at $1 per 1,000 requests against $7.50 per 1,000 requests for Tavily API + MCP. These are the vendors' published prices for the job.

### Do Perplexity Search API and Tavily API + MCP need an API key?

Both take an API key or an OAuth sign-in.

### Can an agent call Perplexity Search API and Tavily API + MCP without installing anything?

Yes. Perplexity Search API has a hosted endpoint at https://api.perplexity.ai/mcp and Tavily API + MCP at https://mcp.tavily.com/mcp/?tavilyApiKey=<key>.

### Are Perplexity Search API and Tavily API + MCP open source?

No open-source release is listed for Perplexity Search API. Tavily API + MCP is open source (MIT).


## For agents

- This comparison as JSON: https://www.anchorterminal.com/compare/perplexity-search-api-vs-tavily-mcp.json, and with the fewest tokens: https://www.anchorterminal.com/compare/perplexity-search-api-vs-tavily-mcp.min.md
- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {"a": "perplexity-search-api", "b": "tavily-mcp"}`. From a terminal: `anchor compare perplexity-search-api tavily-mcp`
- Each listing in full: https://www.anchorterminal.com/api/v1/tools/perplexity-search-api.json and https://www.anchorterminal.com/api/v1/tools/tavily-mcp.json

## Other comparisons with Perplexity Search API or Tavily API + MCP

- [Web Search Tool on Amazon Bedrock AgentCore vs Perplexity Search API](https://www.anchorterminal.com/compare/agentcore-web-search-vs-perplexity-search-api.md)
- [Web Search Tool on Amazon Bedrock AgentCore vs Tavily API + MCP](https://www.anchorterminal.com/compare/agentcore-web-search-vs-tavily-mcp.md)
- [Grounding with Bing Search vs Perplexity Search API](https://www.anchorterminal.com/compare/bing-grounding-vs-perplexity-search-api.md)
- [Grounding with Bing Search vs Tavily API + MCP](https://www.anchorterminal.com/compare/bing-grounding-vs-tavily-mcp.md)
- [Brave Search API + MCP vs Perplexity Search API](https://www.anchorterminal.com/compare/brave-search-mcp-vs-perplexity-search-api.md)
- [Brave Search API + MCP vs Tavily API + MCP](https://www.anchorterminal.com/compare/brave-search-mcp-vs-tavily-mcp.md)
- [Cloudflare Web Search API vs Perplexity Search API](https://www.anchorterminal.com/compare/cloudflare-web-search-vs-perplexity-search-api.md)
- [Cloudflare Web Search API vs Tavily API + MCP](https://www.anchorterminal.com/compare/cloudflare-web-search-vs-tavily-mcp.md)
- [DeepSeek Search and Fetch API vs Perplexity Search API](https://www.anchorterminal.com/compare/deepseek-search-api-vs-perplexity-search-api.md)
- [DeepSeek Search and Fetch API vs Tavily API + MCP](https://www.anchorterminal.com/compare/deepseek-search-api-vs-tavily-mcp.md)
- [Exa API + MCP vs Perplexity Search API](https://www.anchorterminal.com/compare/exa-mcp-vs-perplexity-search-api.md)
- [Exa API + MCP vs Tavily API + MCP](https://www.anchorterminal.com/compare/exa-mcp-vs-tavily-mcp.md)
- [Firecrawl MCP vs Perplexity Search API](https://www.anchorterminal.com/compare/firecrawl-mcp-vs-perplexity-search-api.md)
- [Firecrawl MCP vs Tavily API + MCP](https://www.anchorterminal.com/compare/firecrawl-mcp-vs-tavily-mcp.md)
- [Kagi Search API vs Perplexity Search API](https://www.anchorterminal.com/compare/kagi-search-vs-perplexity-search-api.md)
- [Kagi Search API vs Tavily API + MCP](https://www.anchorterminal.com/compare/kagi-search-vs-tavily-mcp.md)
- [Linkup vs Perplexity Search API](https://www.anchorterminal.com/compare/linkup-vs-perplexity-search-api.md)
- [Linkup vs Tavily API + MCP](https://www.anchorterminal.com/compare/linkup-vs-tavily-mcp.md)
- [Mojeek Web Search API vs Perplexity Search API](https://www.anchorterminal.com/compare/mojeek-vs-perplexity-search-api.md)
- [Mojeek Web Search API vs Tavily API + MCP](https://www.anchorterminal.com/compare/mojeek-vs-tavily-mcp.md)
- [NewsCatcher vs Perplexity Search API](https://www.anchorterminal.com/compare/newscatcher-vs-perplexity-search-api.md)
- [Parallel Search and Task APIs vs Perplexity Search API](https://www.anchorterminal.com/compare/parallel-search-api-vs-perplexity-search-api.md)
- [Parallel Search and Task APIs vs Tavily API + MCP](https://www.anchorterminal.com/compare/parallel-search-api-vs-tavily-mcp.md)
- [Perplexity Search API vs SearchAPI.io](https://www.anchorterminal.com/compare/perplexity-search-api-vs-searchapi-io.md)
- [Perplexity Search API vs SerpApi](https://www.anchorterminal.com/compare/perplexity-search-api-vs-serpapi.md)
- [Perplexity Search API vs Serper](https://www.anchorterminal.com/compare/perplexity-search-api-vs-serper.md)
- [Perplexity Search API vs SERPHouse](https://www.anchorterminal.com/compare/perplexity-search-api-vs-serphouse.md)
- [Perplexity Search API vs SerpKite](https://www.anchorterminal.com/compare/perplexity-search-api-vs-serpkite.md)
- [Perplexity Search API vs SpecStream](https://www.anchorterminal.com/compare/perplexity-search-api-vs-specstream.md)
- [Perplexity Search API vs TinyFish Search](https://www.anchorterminal.com/compare/perplexity-search-api-vs-tinyfish-search.md)
- [Perplexity Search API vs Valyu](https://www.anchorterminal.com/compare/perplexity-search-api-vs-valyu.md)
- [Perplexity Search API vs You.com APIs](https://www.anchorterminal.com/compare/perplexity-search-api-vs-you-com-api.md)
- [SearchAPI.io vs Tavily API + MCP](https://www.anchorterminal.com/compare/searchapi-io-vs-tavily-mcp.md)
- [SerpApi vs Tavily API + MCP](https://www.anchorterminal.com/compare/serpapi-vs-tavily-mcp.md)
- [Serper vs Tavily API + MCP](https://www.anchorterminal.com/compare/serper-vs-tavily-mcp.md)
- [SERPHouse vs Tavily API + MCP](https://www.anchorterminal.com/compare/serphouse-vs-tavily-mcp.md)
- [SerpKite vs Tavily API + MCP](https://www.anchorterminal.com/compare/serpkite-vs-tavily-mcp.md)
- [Tavily API + MCP vs TinyFish Search](https://www.anchorterminal.com/compare/tavily-mcp-vs-tinyfish-search.md)
- [Tavily API + MCP vs Valyu](https://www.anchorterminal.com/compare/tavily-mcp-vs-valyu.md)
- [Tavily API + MCP vs You.com APIs](https://www.anchorterminal.com/compare/tavily-mcp-vs-you-com-api.md)
- [Arcmira vs Perplexity Search API](https://www.anchorterminal.com/compare/arcmira-vs-perplexity-search-api.md)
- [Arcmira vs Tavily API + MCP](https://www.anchorterminal.com/compare/arcmira-vs-tavily-mcp.md)
- [Grep AI vs Perplexity Search API](https://www.anchorterminal.com/compare/grep-ai-vs-perplexity-search-api.md)
- [Grep AI vs Tavily API + MCP](https://www.anchorterminal.com/compare/grep-ai-vs-tavily-mcp.md)
- [Liner Search MCP vs Perplexity Search API](https://www.anchorterminal.com/compare/liner-mcp-vs-perplexity-search-api.md)
- [Liner Search MCP vs Tavily API + MCP](https://www.anchorterminal.com/compare/liner-mcp-vs-tavily-mcp.md)
- [SpecStream vs Tavily API + MCP](https://www.anchorterminal.com/compare/specstream-vs-tavily-mcp.md)
- [Fetch (MCP reference server) vs Tavily API + MCP](https://www.anchorterminal.com/compare/fetch-reference-server-vs-tavily-mcp.md)
- [NewsCatcher vs Tavily API + MCP](https://www.anchorterminal.com/compare/newscatcher-vs-tavily-mcp.md)

---

Query this catalogue directly over MCP: https://www.anchorterminal.com/mcp (Streamable HTTP, no key). How: https://www.anchorterminal.com/agents/#mcp