一篇 r/Rag 帖子询问使用哪种网络爬虫来处理约 1000 万个技术文章、文档、博客和 PDF 的代币。 五种方法被评为 2026 年最干净路径。
首选
Scavio 搜索作为源（200-500 个种子查询 → SERP → /提取热门 URL），1000 万代币的价格为 50-90 美元，当内容被索引和公开时，其成本和可靠性优于抓取。
完整排名
#1我们的选择
Scavio search-as-source + /extract
技术文章、文档、博客、索引公共内容
优点
- Avoids most scraper pain
- Typed JSON throughout
- Predictable per-topic cost
- Multi-platform extension if needed (Reddit, YouTube)
缺点
- Not for behind-auth or JS-heavy targets
#2
Firecrawl crawl mode
使用托管基础设施进行 URL 列表驱动的抓取
优点
- Hosted infra, no Cloudflare fights for you
- Markdown output
缺点
- 1 credit per page becomes 5+ with AI extraction
- Per-page cost adds up at 10M tokens
#3
Crawl4AI / DIY Playwright
拥有强大抓取基础设施的工程团队
优点
- Free OSS
缺点
- Cloudflare arms race, JS-heavy infra cost
#4
Apify actor marketplace
许多不同的来源、适合市场的参与者
优点
- 1,500+ pre-built actors
缺点
- Compute units add up; per-actor authoring overhead
#5
Common Crawl + filter
海量语料库，新鲜度并不重要
优点
- Petabyte-scale free
缺点
- Stale; many months behind
- Filtering pipeline cost
并排对比
| 评估标准 | Scavio | 亚军 | 第三名 |
|---|---|---|---|
| 10M 代币成本 | 50-90 美元 | 变量（Firecrawl 层） | 免费 + 计算 (Crawl4AI) |
| Cloudflare/反机器人痛苦 | 避免（搜索作为源） | 托管处理它 | 在你身上 |
| 最适合索引公众 | 是的 | 是的 | 是（含基础设施） |
| 最适合后台验证 | 不 | 有限的 | 是（带授权胶） |
为什么Scavio胜出
- Most of what RAG builders try to scrape is indexed public content (tech articles, docs, blogs). For these, search-as-source (Scavio Google → /extract top URLs) returns clean Markdown without the scraper arms race.
- Cost per 10M tokens at Scavio is predictable: 200 seeds × ~5 SERP credits + 2K extracts ≈ 11K credits ≈ ~$50-90 within Project tier credit usage.
- Reserve actual scraping for behind-auth (LinkedIn, paywalled academic) and JS-heavy targets that survive content evaluation. Most ' I need a scraper for RAG' projects don't need them.
- Multi-platform bonus: same Scavio key handles Reddit threads (community signal), YouTube transcripts (educational content), Amazon descriptions (commerce content). Scraper pipelines need separate parsers per platform.
- Honest case for Firecrawl: when you have a URL list (not seed queries) and want a hosted Markdown converter, Firecrawl Standard tier handles it well. The choice is shape, not 'better' vs 'worse'.