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It's a split decision.
Pick YepAPI when your application needs SEO, SERP, scraping, social or commerce data alongside AI calls under one key. Pick OpenRouter when the workload is AI inference and you want to select among 600+ models from 80+ providers, use OpenAI-compatible requests, or apply provider and data policies. YepAPI bills metered calls and has no rate limits; OpenRouter adds credit-purchase fees and its free tier is capped at 50 requests per day.
01Side by side
| YepAPI | OpenRouter | |
|---|---|---|
| Pricing model | Pay per call; no subscription or monthly minimum | Model prices plus credit-purchase fees |
| Free access | $5 signup credit; no free plan | 25+ free models; 50 requests per day |
| AI model catalog | 285 chat, image, video and voice models | 600+ models from 80+ providers |
| API interface | One key; JSON across multiple endpoint types | OpenAI-compatible API for AI models |
| Docs and agent tooling | llms.txt, MCP server and agent skills | API docs and model catalog |
| Integrations | Claude Code, Cursor, Codex and MCP | OpenAI-compatible API; 80+ providers |
| Deployment model | Hosted web and API service | Hosted web and API service |
| Limits and scaling | No rate limits; failed calls uncharged | Free plan capped at 50 requests daily |
YepAPI Choose YepAPI if
- Choose YepAPI if your app needs SEO, SERP or scraping data.
- Choose YepAPI if you want data and AI endpoints behind one key.
- Choose YepAPI if per-call billing and no rate limits fit your workload.
OpenRouter Choose OpenRouter if
- Choose OpenRouter if you need to compare or route across AI models.
- Choose OpenRouter if OpenAI-compatible requests fit your application.
- Choose OpenRouter if its free models and daily request allowance suit your trial.
02Pricing at real usage
YepAPI has no monthly subscription or minimum: its pricing page lists a $5 signup credit, then per-call or other metered charges. The homepage lists Google SERP at $0.01 per call and scraping at $0.01; SEO keyword overview starts at $0.03. Failed calls are not charged, and YepAPI says it has no rate limits. OpenRouter’s Free plan includes 25+ free models and four free providers, capped at 50 requests per day. Paid-model use has no listed subscription: Standard adds a 5.5% fee when you buy credits, while Business adds 8%, on top of model list prices. Standard and Business include $25,000 per month of BYOK inference without fees; above that, a 5% fee applies. Enterprise is contract-priced. The cost comparison depends on workload: YepAPI charges for data and AI calls, while OpenRouter’s bill follows model usage plus credit fees.
03API, SDKs and integration
YepAPI exposes endpoint calls under one API key, with JSON responses across SEO, SERP, scraping, social and commerce data, and AI models. The homepage shows POST endpoints such as /v1/seo/keywords/overview, /v1/serp/google and /v1/scrape; it links to API docs and an llms.txt prompt for coding agents. It also names Claude Code, Cursor and Codex, plus an MCP server and agent skills.
OpenRouter offers an OpenAI-compatible API for 600+ models from 80+ providers. Requests can use automatic model and provider routing, and developers can bring provider keys. Its web dashboard groups requests, models and spend. Neither vendor lists language-specific SDKs or a CLI on its homepage; check the docs before choosing a language-specific wrapper. For either service, verify the request and response shape for the endpoints or models you deploy: a shared API does not make every provider’s capabilities identical.
04Open source, self-hosting and lock-in
YepAPI and OpenRouter are hosted API services; neither is presented as self-hostable in the vendor pages. Neither vendor publishes an open-source license or data-export commitment there, so ask about export and hosting options before making either a core dependency.
Lock-in comes mainly from request shape and service scope. YepAPI combines SEO, scraping, social, commerce and AI endpoints behind its own API key and JSON format. Replacing it means mapping each data endpoint to another provider as well as changing AI calls. OpenRouter’s OpenAI-compatible interface can reduce changes for compatible clients, but routing, provider-specific model names, policies and billing still depend on OpenRouter. Keep a provider-neutral adapter in your application, store prompts and outputs in your own database, and check export and retention terms before sending production data.
Questions people ask
Is YepAPI or OpenRouter better for an AI application?
OpenRouter fits applications centered on AI inference that need access to 600+ models from 80+ providers through an OpenAI-compatible API. YepAPI fits when AI is one part of an application that also needs SEO, SERP, scraping, social or commerce data. The right choice depends on the endpoints your code needs.
Can YepAPI replace OpenRouter?
Not as a direct drop-in based on the published API descriptions. YepAPI offers AI models alongside data endpoints, while OpenRouter provides an OpenAI-compatible interface and automatic model and provider routing. Check the exact model names, request formats and routing behavior your application relies on before planning a migration.
What does OpenRouter charge for paid models?
The pricing page says customers pay model list prices plus applicable credit-purchase fees. Standard lists a 5.5% credit-purchase fee and Business lists 8%. Standard and Business also include $25,000 per month of BYOK inference without fees; a 5% fee applies above that allowance.
What are the free-tier limits?
OpenRouter’s Free plan includes 25+ free models, four free providers and 50 requests per day. YepAPI offers a $5 signup credit rather than a free plan; its pricing page says failed calls are not charged and it has no rate limits. Check the vendors’ current pricing pages before setting usage budgets.