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It's a split decision.
Choose YepAPI if your app needs one usage-billed API for SEO, scraping, social and e-commerce data, or AI models. It offers $5 in signup credit and no monthly subscription. Choose Ahrefs API if you need Ahrefs marketing and search data, its MCP connections, or Data Studio integrations. Ahrefs has free test queries, but ongoing API access is tied to plans with request-row limits on several tiers. Check the applicable Ahrefs plan rate before budgeting.
01Side by side
| YepAPI | Ahrefs API | |
|---|---|---|
| Pricing model | Per-call billing; no monthly fees or minimums | Plan-based access; rates listed in GBP |
| Free access | $5 signup credit; failed calls uncharged | Free test queries; limited Ahrefs Free tools |
| API and SDKs | Shared key; endpoints return JSON | REST API; OpenAPI specification |
| CLI and docs | API docs and agent-readable llms.txt | Endpoint docs, rate limits, authentication, OpenAPI |
| Integrations | MCP server, agent skills, coding agents | MCP, Data Studio, Ahrefs Connect |
| Deployment model | Vendor API with usage billing | Vendor API with plan-based access |
| Limits and scaling | No rate limits; pay per call | Row caps by plan; uncapped Enterprise access |
| Data export | Export options are not described | Enterprise includes personalized data exports |
YepAPI Choose YepAPI if
- Choose YepAPI if you need several data categories behind one API key.
- Choose YepAPI if per-call billing fits your workload better than a subscription.
- Choose YepAPI if your app also needs access to AI models.
Ahrefs API Choose Ahrefs API if
- Choose Ahrefs API if your workflows depend on Ahrefs marketing and search data.
- Choose Ahrefs API if you want MCP connections to Claude or ChatGPT.
- Choose Ahrefs API if you need Data Studio connectors or Ahrefs Connect.
02Pricing at real usage
YepAPI charges by call or other metered unit, with no subscription or monthly minimum. The pricing page lists a $5 signup credit, Google SERP calls from $0.01, and keyword overview calls from $0.03. Web scraping is listed at $0.01 per call; failed calls are not charged. Costs rise with successful usage, and the vendor says there are no rate limits.
Ahrefs offers free test queries without an Enterprise plan, while Ahrefs Free provides limited Site Explorer and Site Audit access. Ongoing API access appears on Lite, Standard, Advanced, and Enterprise plans. The pricing page lists plan rates in GBP and says annual billing saves up to 17%, but does not give monthly-billing rates. Lite includes 1,000 credits per user and a 100-row request cap; Standard and Advanced have higher row caps and unlimited credits per user. Confirm the applicable plan cost and credit rules before estimating production spend.
03API, SDKs and integration
YepAPI presents a shared API key for SEO, SERP, scraping, social and e-commerce data, and AI models. Its examples use HTTP POST endpoints and JSON request and response bodies. The docs and homepage describe calls rather than language-specific SDKs. The homepage also points to an llms.txt file for AI agents, an MCP server, and agent skills, and names Claude Code, Cursor, and Codex.
Ahrefs provides a REST API for keyword research, backlink analysis, rank tracking, and brand visibility monitoring. Its documentation covers authentication, rate limits, endpoints, API keys, and an OpenAPI specification. The vendor also documents MCP connections for Claude and ChatGPT, Data Studio connectors for Site Explorer, Rank Tracker, Site Audit, and Brand Radar, and Ahrefs Connect for third-party apps through API v3. Neither vendor names a language-specific SDK in these product descriptions, so plan for direct HTTP integration unless its current docs specify a client.
04Open source, self-hosting and lock-in
Neither vendor publishes an open-source license or self-hosting option for these APIs. Both are vendor-operated services, so an application using either one depends on the vendor’s endpoint availability, authentication, and response contracts.
YepAPI’s shared key and consistent JSON format may simplify switching among its own endpoint categories, but that does not make calls portable to another provider. The product pages do not describe data export or a migration tool; keep your own records of requests and any results your application needs to retain.
Ahrefs lists personalized data exports for Enterprise customers, alongside custom API endpoints and unlimited historical data. That helps with access to Ahrefs data, but does not establish that another provider can reproduce its metrics or history. Keep provider-specific transformations behind an adapter and save the raw responses your app needs for later migration.
Questions people ask
Is YepAPI cheaper than Ahrefs API?
It depends on request volume and which endpoints you use. YepAPI lists per-call prices, including Google SERP from $0.01 and keyword overview from $0.03. Ahrefs uses plan-based API access, but its monthly plan rates are not published in the pricing details here. Compare a representative month of calls with the Ahrefs plan and credit rules you need.
Does Ahrefs API have a free tier?
Ahrefs offers free test queries that do not require an Enterprise plan. Ahrefs Free also includes limited Site Explorer and Site Audit access, but API access is not listed for that plan. The Lite, Standard, Advanced, and Enterprise plans list API access.
Which API has fewer request limits?
YepAPI says it has no rate limits and does not charge for failed calls. Ahrefs sets maximum rows per request on Lite, Standard, and Advanced: 100, 250, and 500, respectively. Enterprise lists uncapped API access and unlimited maximum rows per request.
Can I connect either API to AI agents?
Yes. YepAPI names an MCP server, agent skills, and compatibility with Claude Code, Cursor, and Codex. Ahrefs documents MCP connections for Claude and ChatGPT, including Claude Code. Check each vendor’s current setup docs for the authentication and configuration steps required by your agent.