LLM Training Corpora
Build search engines and LLM datasets.
Concurrent crawls across hundreds of thousands of IPs with smart retry and politeness defaults. Power foundation-model training, search indexing, and vector datasets at scale.
- Unlimited concurrent sessions
- Geo-balanced collection
- Robots.txt aware
IPv6 unlimited flat-fee is unbeatable for crawl-the-internet workloads at TB scale.
Explore IPv6Why teams choose Rainproxy for llm training corpora.
Training a foundation model, fine-tuning a domain LLM or building a RAG corpus all start with the same hard problem: collecting clean, diverse, high-volume web data without getting throttled or blocked. Rainproxy is the proxy layer behind several of the largest open-web crawls in production today, with hundreds of thousands of concurrent sessions and full IPv6 subnets purpose-built for crawl workloads.
Unlike per-GB residential plans that punish you for scale, our IPv6 product runs on a flat monthly fee — so a billion-page crawl costs the same as a hundred-million-page crawl. Smart retry, automatic backoff and robots.txt awareness are built in, so your engineers focus on the parser and the schema, not on babysitting blocks.
Built for serious llm training corpora workloads.
Flat-fee IPv6 at TB scale
Unlimited bandwidth on dedicated IPv6 /48 subnets — the only sustainable economics for crawling the open web.
Geo-balanced collection
Round-robin across 12 regions keeps your dataset diverse and avoids regional content bias in your training data.
Crawl-aware retry
Exponential backoff, polite per-host concurrency caps and robots.txt support out of the box.
Compatible with every crawler
Scrapy, Apache Nutch, Colly, Crawlee, Common Crawl tooling and bespoke Python/Go crawlers.
From zero to production in three steps.
Seed your queue
Push URLs into your scraper. We handle the pool, sessions and rotation.
Parallelize at will
Run thousands of concurrent sessions across IPv6 subnets without paying per GB.
Auto-balance geos
Geo-balanced collection ensures your corpus isn't biased to a single region.
Drop-in for the tools you already use.
Frequently asked questions.
What's the best proxy type for LLM training data collection?+
For pure open-web crawls at scale, IPv6 is the most cost-effective option — flat monthly pricing, no bandwidth metering, and most modern sites accept IPv6. For sites that require residential trust, blend in residential proxies on the routes that need them.
Can I crawl billions of pages without bandwidth costs spiraling?+
Yes. The Rainproxy IPv6 product is flat-fee per month with unlimited bandwidth, which is why foundation-model teams use it for full-internet crawls.
Is your network robots.txt compliant?+
Our defaults honor robots.txt and per-host concurrency politeness, but the choice is ultimately in your crawler. We document best practices for ethical, large-scale collection.