The quality bar for web data.
The numbers below come from published benchmarks and production monitoring. The bench is a public repo, so you can run it yourself.
- 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 80 real anti-bot tasks behind Cloudflare, Akamai, PerimeterX, and DataDome. Higher is better.
Spider passed 80/80 anti-bot tasks on Sep 18, 2026, through the session proxy that production requests use. Other providers retain the March 22, 2026 readings published in the blog; they were not re-measured.
The page as it is.
Fidelity means readability-cleaned output in the format you asked for, 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, all from the same API.
Metadata on every record
Source URL, timestamps, and status fields ship with each record, so provenance is auditable.
Silk AI extraction
Our custom extraction model returns schema-shaped JSON for pipelines that need fields.
How Silk worksSub-second delivery.
Freshness is the 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$19/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. 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. The production figures carry their own source lines.
spider-rs/benchmark ↗Open methodology
We publish the task list and the scoring with every benchmark we cite. Past runs stay on the research page.
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 (100%) | $0 | 99.9% | <1s |
ScrapingBee | ✓ | ✓ | n/a | not tested | $49 | 98% | 3.14s |
Firecrawl | ✓ | ✓ | ✓ | not tested | $19 | ~95% | ~3s |
Bright Data | ✓ | ✓ | n/a | not tested | $500 | ~95% | ~5s |
Apify | ✓ | ✓ | ✓ | not tested | $49 | ~90% | ~4s |
Crawl4AI OSS | n/a | ✓ | ✓ | not tested | $0 | varies | varies |
Source · published pricing + Spider production monitoring
What ships.
The product behind the numbers.
Extraction from a prompt
Ask for the fields you want in plain language and they come back as JSON on your schema, so you never write a selector or parse HTML yourself. The markdown is ready to feed a model as it is.
Anti-bot bypass
Stealth browsing with randomized fingerprints and rotating proxies. Blocked requests retry on their own, and we do not bill for the ones that never land.
Drop-in integrations
Works with LangChain, LlamaIndex, CrewAI, and AutoGen. SDKs for Python, Node, Rust, and Go.
Hold us to these numbers.
Free credits on signup. No monthly minimum.