Caleb Peffer (Hiring!) (@CalebPeffer) / X

Caleb Peffer (Hiring!)

1,463 posts

Caleb Peffer (Hiring!)

@CalebPeffer

Co-founder and CEO @firecrawl ️‍🔥 Prompting humans and machines. Be the best version of yourself.

San Francisco

Joined December 2020

Pinned
Caleb Peffer (Hiring!)
@CalebPeffer
Aug 19, 2025
Excited to announce @firecrawl's $14.5M Series A 🔥 We've grown 15x in the past 12 months. The demand for clean web data in AI is real. Here's the story of how we built the web data layer for AI - starting from a side project to powering how 350k+ builders get web data 🧵
117K
Caleb Peffer (Hiring!)
@CalebPeffer
Jan 30, 2025
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263K
Caleb Peffer (Hiring!)
@CalebPeffer
Feb 1, 2025
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235K
Caleb Peffer (Hiring!)
@CalebPeffer
Oct 12, 2025
Next week we're open sourcing Agent Builder - a visual n8n-style workflow builder for AI agents. Build AI agent workflows with a visual canvas by connecting @firecrawl, LLMs, logic nodes, and MCPs, then deploy as an API. Stay tuned for this one 👀
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Caleb Peffer (Hiring!)
@CalebPeffer
Jul 20, 2025
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Caleb Peffer (Hiring!)
@CalebPeffer
Jun 22, 2025
Next week we’re launching Fireplexity, our open source Perplexity clone. Ask any question and get AI-powered answers with cited sources, all powered by Firecrawl's /search and /scrape capabilities. Build your own AI answer engine in just 3 days - follow to stay tuned!
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Caleb Peffer (Hiring!)
@CalebPeffer
May 9, 2025
I'm spending $1 million to hire AI agents for our startup @firecrawl The future belongs to those who can build and control armies of AI agents. We're hiring hundreds of them (and their creators) across our business. See if your agent (or you) can make it.
156K
Caleb Peffer (Hiring!)
@CalebPeffer
Mar 4, 2025
Excited to announce Claude 3.7 Trend Finder 🔦 Use Anthropic's new model to monitor & extract trends on blogs and socials with @firecrawl and the X API. It collects posts from key influencers and sites, tracks the latest trends, and then pings you on Slack or Discord.
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Caleb Peffer (Hiring!)
@CalebPeffer
Jul 9, 2024
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Caleb Peffer (Hiring!)
@CalebPeffer
Feb 24, 2025
Introducing Claude 3.7 Web Crawler 🕸️ It finds pages, re-ranks them, then navigates entire websites with Anthropic's new model, returning data according to the entered objective. Powered by 3.7 Sonnet for powerful near-instant responses and @firecrawl
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Caleb Peffer (Hiring!)
@CalebPeffer
Aug 31, 2025
Next week we're open-sourcing our website AI readiness checker 🤖 It runs a complete audit with @firecrawl including: - LLMs.txt compliance - AI-readable content quality - Proper sitemap structure - Plus 10+ other checks Stay tuned to find out where your site stands 👀
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37K
Caleb Peffer (Hiring!)
@CalebPeffer
Oct 16, 2025
Announcing Open Agent Builder - A @firecrawl powered n8n-style workflow builder example app Build AI agent workflows with a visual canvas by connecting Firecrawl, LLMs, logic nodes, and MCPs, then deploy as an API. Fork the repo and build your own workflow app today 👇
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Caleb Peffer (Hiring!)
@CalebPeffer
Apr 28, 2023
In honor of Pinecone's Series B: We use postgres + pgvector with @supabase and it works great
60K
Caleb Peffer (Hiring!)
@CalebPeffer
Sep 3, 2025
Introducing our website AI readiness checker 🤖 It runs a complete audit with @firecrawl including: - LLMs.txt compliance - AI-readable content quality - Proper sitemap structure - Plus 10+ other checks Find out where your site stands 👀
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49K