The quality bar for web data.
The numbers below come from published benchmarks and production monitoring. Reproduce them.
- success rate
- 99.9%
- stealth bench
- #1
- response
- <1s
- failed requests
- $0
#1 on Stealth Bench V1.
Completeness means the hard pages too: success rate across 71 real anti-bot tasks — Cloudflare, Akamai, PerimeterX, DataDome. Higher is better.
The page as it is.
Fidelity means readability-cleaned output in every shape your pipeline needs, with the record's origin attached.
Readability-cleaned markdown
Main-content extraction strips nav, boilerplate, and cookie banners at fetch time.
Every output format
HTML, Markdown, plain text, screenshots, PDFs, and structured JSON. One API, every shape your pipeline needs.
Metadata on every record
Source URL, timestamps, and status fields ship with each record — provenance you can audit.
Silk AI extraction
Our custom extraction model returns schema-shaped JSON for pipelines that need fields.
How Silk worksSub-second delivery.
Freshness is a quality metric: time from API request to data delivery, measured across production workloads. Lower is better.
- Spider<1s
- Firecrawl~3s
- ScrapingBee3.14s
- Apify~4s
- Bright Data~5s
Source · published benchmarks + Spider production monitoring
$0 before your first request.
What you owe each month before collecting a single page. Spider has no minimum, and a failed request bills $0.
- Spider$0/mo
- Firecrawl$19/mo
- Apify$49/mo
- ScrapingBee$49/mo
- Netnut$300/mo
- Bright Data$500/mo
Source · published vendor pricing
Audit us.
Provenance means every claim on this page traces to code or a run you can reproduce.
MIT-licensed core
Our crawler is MIT-licensed with thousands of GitHub stars. Audit the code, self-host it, or use the managed API.
spider-rs/spider ↗Open benchmark repo
The stealth benchmark on this page lives in a public repo. Clone it and rerun it; production figures carry their own source lines.
spider-rs/benchmark ↗Open methodology
Task lists, scoring, and run history are published alongside every benchmark we cite.
One row that does everything.
Feature-for-feature against the other web data APIs.
| Service | REST API | JS Render | AI Extract | Stealth | Min /mo | Success | Speed |
|---|---|---|---|---|---|---|---|
Spider | ✓ | ✓ | ✓ | #1 (84.5%) | $0 | 99.9% | <1s |
ScrapingBee | ✓ | ✓ | — | not tested | $49 | 98% | 3.14s |
Firecrawl | ✓ | ✓ | ✓ | not tested | $19 | ~95% | ~3s |
Bright Data | ✓ | ✓ | — | not tested | $500 | ~95% | ~5s |
Apify | ✓ | ✓ | ✓ | not tested | $49 | ~90% | ~4s |
Crawl4AI OSS | — | ✓ | ✓ | not tested | $0 | varies | varies |
Source · published pricing + Spider production monitoring
What ships.
The surface behind the numbers.
AI-native extraction
Pull structured data with natural-language prompts. LLM-ready markdown, JSON schemas, and field extraction — no selectors, no parsing.
Anti-bot bypass
Stealth browsing with fingerprint randomization, smart proxy rotation, and automatic retries. You get the data; we handle the rest.
Drop-in integrations
Works with LangChain, LlamaIndex, CrewAI, AutoGen, and every major AI framework. SDKs for Python, Node, Rust, and Go.
Hold us to these numbers.
Free credits on signup. No monthly minimum.