Crawl4AI itself is free and open-source. But running it at scale requires servers ($20–$200/month), residential proxies ($50–$400/month), and ongoing engineering time to maintain. AlterLab starts at $0.0002/request with no infrastructure to manage — for many teams, the total cost is lower and the setup time is a fraction.

When should I use Crawl4AI instead of AlterLab?

Crawl4AI is a great choice for local prototyping, research projects where you control the target sites, and teams with dedicated DevOps resources who prefer full control. AlterLab is the better fit when you need production reliability, automatic website compatibility, and want to focus on your data rather than infrastructure.

Can AlterLab replace Crawl4AI in production?

Yes. AlterLab provides everything Crawl4AI does — JavaScript rendering, markdown output, structured extraction — plus a managed proxy network, 5-tier intelligent routing, and challenge resolution. You get production-grade reliability without running your own infrastructure.

How hard is it to migrate from Crawl4AI to AlterLab?

Migration takes about 15 minutes. Replace the Crawl4AI library call with a simple POST request to AlterLab's API. AlterLab returns markdown, HTML, and structured JSON in a single response — no async setup, no proxy configuration required.

Does AlterLab have a free tier like Crawl4AI?

Yes — AlterLab offers up to 5,000 free requests with no credit card required. After that, pay-as-you-go from $0.0002 per request. Your balance never expires, so there's no pressure to use up credits before a reset date.

What's the difference between Crawl4AI and a managed scraping API?

Crawl4AI is a Python library you install and run on your own infrastructure. A managed API like AlterLab handles the infrastructure, proxy network, challenge resolution, and scaling for you. You send a request and get data back — no servers, no proxy contracts, no maintenance.

Crawl4AI Alternative

Crawl4AI Is Great for Prototyping. AlterLab Is Built for Scale.

Crawl4AI is free, but you pay in infrastructure and engineering time. AlterLab is a managed API from $0.0002/request — no servers, no maintenance, no surprises.

60%

Cheaper than Crawl4AI

Based on average usage across all tiers

99.9% uptime

195+ countries

No credit card

Zero infrastructure to manage — fully managed API

Automatic website compatibility — no manual configuration

5-tier intelligent routing — pay only for what each URL needs

Built-in challenge resolution — handles complex sites automatically

Scales from 1 to 1M requests without engineering work

99.9% uptime target — not dependent on your own servers

See Pricing Comparison

Common frustrations

Why developers leave Crawl4AI

Real pain points from developers who switched to AlterLab

Self-hosting eats engineering time

Crawl4AI requires provisioning servers, managing proxies, handling updates, and debugging infrastructure failures. Every hour spent on ops is an hour not spent on your product.

Proxy costs add up fast

Crawl4AI works best with residential proxies — which cost $50–$400/month at scale. When you add server costs, 'free' open-source often costs more than a managed API.

Limited website compatibility without proxy setup

Without a quality proxy network and challenge resolution, Crawl4AI struggles with protected sites. AlterLab handles this automatically across 5 tiers.

Feature-by-Feature

Every feature, side by side

See exactly how AlterLab compares to Crawl4AI across all key features

Feature	AlterLab Winner	Crawl4AI
Managed hosting No servers to provision or maintain
Automatic scaling Scales with request volume automatically
Uptime target Availability target	99.9% target	Self-managed
Proxy network Built-in residential proxy pool	10M+ IPs, 195 countries	Must provide own proxies

Save 60% vs Crawl4AI

Same features, 60% less

Get the same capabilities at a fraction of the cost. Start with up to 5,000 free requests — no credit card required.

View Detailed Pricing

AlterLab vs Crawl4AI price per 1,000 requests
Workload	AlterLab per 1k	Crawl4AI per 1k
Basic HTML	$0.20 $0.0002 per request	$0.50 $0.0005 per request
JavaScript rendering	$4.00 $0.004 per request	$8.00 $0.008 per request

Interactive Calculator

See How Much You Save

Drag the slider to calculate your exact savings vs Crawl4AI

pricing-calculator

Scraping Mode

Monthly Volume

100K

Best Price

AlterLab

$20.00

$0.0002 per request

Crawl4AI

$50.00

$0.0005 per request

Your Monthly Savings

$30.00

60% less every month with AlterLab

That's $360.00 back in your budget annually

No credit card

Up to 5,000 free requests

2-min setup

Live API Preview

See AlterLab in action

One endpoint. Any website. Results in under 2 seconds. No Crawl4AI complexity.

AlterLab API Playground

Click Run to see the response

// Response will appear here...

Try it yourself with up to 5,000 free requests

No credit card required. Get your API key in 30 seconds.

Migration Time: 15 minutes

Switch from Crawl4AI in 15 minutes

Simple easy migration process. No downtime, no complex setup.

Migration Steps

Code Migration Example

Before (Crawl4AI)

Python

import asyncio
from crawl4ai import AsyncWebCrawler

async def main():
    async with AsyncWebCrawler() as crawler:
        result = await crawler.arun(
            url="https://example.com"
        )
        print(result.markdown)

asyncio.run(main())

After (AlterLab)

Python

import requests

response = requests.post(
    "https://api.alterlab.io/v1/scrape",
    headers={"X-API-Key": "YOUR_ALTERLAB_KEY"},
    json={"url": "https://example.com"}
)
print(response.json()["markdown"])

Compatibility Notes

•AlterLab returns markdown, HTML, plain text, and JSON in a single response
•No async setup required — standard synchronous HTTP POST
•Proxy configuration is handled automatically by AlterLab's tier system
•render_js: "auto" renders in a browser only when the page needs it; true forces browser rendering