Updated March 10, 2026
AlterLab is an enterprise-grade web scraping API designed specifically for LLM and RAG pipelines. It bypasses anti-bot systems and extracts data from JavaScript-heavy sites, PDFs, and dynamic content with sub-2-second response times. Unlike general scrapers that output markdown dumps, AlterLab delivers structured JSON output optimized for AI consumption with tiered pricing by page complexity.
ScrapeGraphAI is an open-source web scraping library that uses LLMs to automatically extract structured data from websites. Instead of writing CSS selectors or XPath queries, developers describe what data they want in natural language. Supports multiple LLM providers and handles dynamic JavaScript-rendered pages.
Core capabilities each platform advertises.
What each tool does well, and the limitations to keep in mind.
Pros
Cons
Choose AlterLab if you wantChoose if you want
Choose ScrapeGraphAI if you wantChoose if you want
Respan lets you trace LLM and agent calls across any model or framework, A/B test prompts on production traffic, and route requests across 500+ models through one gateway.