Automated SDR & BDR prospecting and outbound sales workflows using AI.

Top 10 YC launch of all time!

We're backed by Y Combinator (S23)

Connect with any prospect
like you actually know them.

Automate SDR and BDR prospecting & outbound sales workflows using AI.

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Most businesses' email deliverability rates are awful.

There are 40+ common pitfalls that land your emails in the spam folder. We use every trick in the book to evade them.

Cold start

Unsigned messages

Simultaneous blasts

Bouncing messages

Templated emails

Domain exhaustion

'Spiky' email volume

Near-identical emails

Blind blasting

Degrading health

Excessive links

Flagged keywords

Target companies with hyper-precision.

Fiber AI pulls in data from 50+ providers, including BuiltWith, Crunchbase, LinkedIn, Gartner, and more. Reach all the companies you care about, and none of the ones you don't.

Find all companies that...

Did YC in the last 2 years

Are between Series A–C

Based in SF Bay Area

Raised from a16z or Sequoia

Eng team is growing ≥50% YoY

Use ElasticSearch

Identify the ideal prospect at any company.

Once you've found companies you want to target, just tell us who you're looking for, and watch Fiber AI filter to get the highest-priority prospects.

Find all employees who...

Joined their company 2+ years ago

Work on LLM infra

Live within 20 miles of San Francisco

Previously worked at Google

Have expertise in Rust

Find verified contact info for your prospects.

Fiber AI rigorously vets every piece of information we find, including four layers of bounce detection for email addresses.

Name	LinkedIn	Email	Phone	Address
Isabel Smith Isabel Smith	/isabel-smith	isabel@company.com	(212) 555-1234	123 Broadway, New York, NY 10010
Gary Wright Gary Wright	/gary-wright	gary@company.com	(415) 555-6789	1 Market St, San Francisco, CA 94101
Jasmine Shah Jasmine Shah	/jasmine-shah	jasmine@company.com	(312) 555-5050	100 S State St, Chicago, IL 60606

Find the "golden nugget" to make your outreach truly personal.

Fiber AI uses all the information at its disposal to craft an ultra-personalized hook that's near-guaranteed to get an open — and a response.

Wrote blog post on road trips

Went to Harvard

Worked at Google MTV

Tweets about chess

To:

Robert Zhen

Subject: Highway 395 >>> the PCH

Our personalized outreach has closed...

Mark Cuban

Owner, Dallas Mavericks

Nir Eyal

Bestselling Author, Hooked

Mike Novogratz

CEO, Galaxy Investment Partners

Arianna Simpson

General Partner, Andreessen Horowitz

Jason Calacanis

Co-Host, All-In Podcast

...and CEOs / VPs at:

Your road to hypergrowth begins here.

When you book a demo, we're not just going to give you yet another product tour. Instead, we'll spend half the time learning about your growth strategy and the other half brainstorming how Fiber AI can kick it up a notch... or three.