Surfer SEO

Free tier

AI-powered SEO content optimization platform to rank higher on Google

Free tier available·All audiences·Powered by OpenAI·API available

Key strengths

Real-time content scoring against top-ranking pagesAI-generated SEO-optimized article outlines and draftsNLP-based keyword clustering and semantic analysisSERP analysis with competitor content gap detectionDeep integration with Google Docs and WordPress

Free tier + paid plans · from $89 USD/mo

Wrocław, Poland

Founded 2017

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Surfer SEO operates by crawling live SERP data for a target keyword, extracting over 500 on-page ranking factors from the top-ranking pages, and applying NLP and machine learning to identify the semantic patterns behind high-performing content. It exposes a Content Editor with real-time scoring, a keyword research module with clustering powered by semantic similarity, and an AI writing assistant (Surfer AI) built on top of OpenAI models. The platform offers a REST API for programmatic access, webhooks, and native integrations with Google Docs, WordPress, Jasper, and Semrush, making it embeddable into existing content workflows.

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