Crawl4AI vs Firecrawl: which crawler for LLM data?
Choose Crawl4AI if you want open source, full control and no per-page fees; choose Firecrawl if you want a hosted API that works without running browsers yourself. Both turn web pages into Markdown for LLMs – the difference is who runs the infrastructure.
Updated 6 Nov 2026
Comparison table
| Crawl4AI | Firecrawl | |
|---|---|---|
| Type | Python library + self-hosted Docker API; official cloud service available | Hosted API first; open-source self-host version |
| License | Apache 2.0 | AGPL-3.0 for the open-source core |
| Cost model | Free to self-host; you pay server, proxies, LLM calls | Credit-based plans with a free tier |
| Setup | pip + browser install, or one Docker command | API key, SDK or HTTP call |
| JavaScript pages | Yes, headless browser (Playwright) | Yes, rendered on their infrastructure |
| Output | Markdown (raw/fit), HTML, JSON, screenshots, PDF | Markdown, HTML, JSON, screenshots |
| Structured extraction | CSS/XPath schemas or any LLM (incl. local via Ollama) | LLM extraction via API |
| Whole-site crawling | Deep crawl strategies (BFS/DFS) in your code | Crawl and map endpoints |
| MCP | Built into the Docker server | Official MCP server |
| Data control | Everything stays on your machine | Requests run through the provider (cloud) |
Pricing and features change often; check the current details on both official sites before you decide.
When Crawl4AI is the better choice
- You crawl a lot and per-page fees would add up.
- Data must stay on your own servers (privacy, compliance).
- You want to use a local LLM for extraction.
- You are fine with running Python or a Docker container.
When Firecrawl is the better choice
- You want results today without operating browsers, proxies and retries.
- Your volume is small or unpredictable.
- Your stack is not Python and you just want an HTTP API with SDKs.
Middle ground
Run the Crawl4AI Docker server: you get an HTTP API like a hosted service, but self-hosted (guide). Or try a single URL in the Crawl4AI online tool to see the output quality before you commit.
Crawl4AI vs Firecrawl FAQ
Is Crawl4AI better than Firecrawl?
Neither is better in general. Crawl4AI wins on cost and control when you self-host; Firecrawl wins on convenience as a managed API.
Is Firecrawl open source?
Firecrawl has an open-source version under AGPL-3.0, but its main product is the hosted API. Crawl4AI is Apache 2.0, which is more permissive for commercial use.
Can I switch from Firecrawl to Crawl4AI?
Yes. Both return Markdown, so downstream code usually stays the same. Replace the API call with Crawl4AI’s Python API or its Docker /md endpoint.
More Crawl4AI guides
Crawl4AI Python tutorialpip install, AsyncWebCrawler, fit Markdown, LLM extraction.Crawl4AI MCP serverGive Claude and Cursor live web access with the Docker MCP endpoint.Crawl4AI DockerOne command, playground, /crawl and /md endpoints.Is Crawl4AI free?Apache 2.0 license, commercial use, real running costs.Crawl4AI with n8nHTTP Request node + Docker: Markdown in any workflow.Crawl4AI alternativesFirecrawl, Jina Reader, ScrapeGraphAI, Scrapy and more.