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We build the data infrastructure for AI.

Spider is a research lab for web data quality. Its one API crawls, scrapes and searches the web and returns clean markdown or JSON for AI agents and RAG pipelines. We do the work in public: an open source core, open benchmarks, and a bill that reads $0 when a page fails.

  1. 2023

    spider, open source

    A low-latency Rust crawler. Concurrent by default, designed to crawl thousands of pages a second on a single host. MIT-licensed at github.com/spider-rs/spider.

  2. 2024

    Spider

    The same crawler, hosted. Proxies, browser rendering, and auto-scaling rolled in. JavaScript rendering included; pay only for bandwidth and compute used.

  3. 2025

    AI extraction

    Send a prompt and a URL, get structured JSON. Selectors and parsers are still there if you want them, but most teams stop reaching for them.

  4. 2026

    The quality lab

    Silk, our extraction model. Browser Fidelity Bench V1, published with methodology. The work shifted from moving pages fast to proving the data is right: fidelity, completeness, freshness, provenance.

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support@spider.cloud
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github.com/spider-rs
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@spider_rust
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The Spider team · BAGELMEN LLC · © 2026

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