Bullpen Blog

Pitch deck guides, fundraising strategies, startup metrics, and stories from founders who've been there. Built by the team behind AI-powered pitch evaluation.

Topics

Pitch Deck Mastery

Build decks that raise capital — slide by slide.

30 articles

Funding Strategies

From pre-seed to Series A, the fundraising playbook.

28 articles

Startup Metrics & KPIs

The numbers that investors actually look for.

28 articles

Founder Stories & Ecosystem

Real stories from the trenches of building companies.

28 articles

Accelerators & Incubators

Get into top programs and make the most of them.

28 articles

GTM & Growth

Launch, get customers, and scale.

28 articles

AcceleratorsMay 4, 2026

The Ultimate Guide to Startup Accelerators: How to Get In and Make the Most of It

Everything you need to know about startup accelerators — from Y Combinator to Techstars, how to apply, what programs look for, and how to maximize your time in one.

9 min read·

#accelerators#y-combinator#techstars

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FoundersMay 4, 2026

How Real Founders Raised Their First Million: Lessons from the Trenches

Real stories from founders who have been through it — fundraising wins, failures, pivots, and the lessons they learned building their companies.

9 min read·

#founders#startup-stories

FundingMay 4, 2026

The Startup Fundraising Playbook: From Pre-Seed to Series A

A comprehensive guide to the startup fundraising lifecycle — when to raise, how much to raise, which instruments to use, how valuation works, and how to navigate term sheets.

15 min read·

#fundraising#venture-capital

GTM & GrowthMay 4, 2026

Startup GTM Strategy: How to Launch and Get Your First 100 Customers

A complete guide to go-to-market strategy for early-stage startups — choosing your model, pricing, distribution channels, and building a growth engine from scratch.

9 min read·

#gtm#growth

Pitch DecksMay 4, 2026

The Complete Guide to Building a Pitch Deck That Raises Capital

A comprehensive breakdown of what makes a pitch deck work — from the 10-slide structure to investor psychology, design principles, and common mistakes. Written for founders actively fundraising.

20 min read·

#pitch-deck#fundraising

MetricsMay 4, 2026

Startup Metrics That Matter: What Investors Actually Look For

A deep dive into the metrics that investors care about — unit economics, growth efficiency, retention, and the numbers that separate funded startups from the rest.

13 min read·

#metrics#saas-metrics

Pitch DecksMay 5, 2026

5 Real Pitch Decks That Raised Money — Slide-by-Slide Analysis from the Actual Decks

We analyzed the actual pitch decks from Airbnb, Buffer, Uber, Front, and Dropbox — sourced from original slides, VC course breakdowns, and founder presentations. Here's what each slide was doing, why it worked, and what you can copy.

13 min read·

#pitch-deck#fundraising

FundingMay 7, 2026

The Pre-Seed Fundraising Playbook: From Zero to $1M

Everything first-time founders need to know about raising a pre-seed round in 2026 — check sizes, valuation caps, investors at this stage, what milestones to hit, and how the landscape has changed since 2020. Backed by real data from Carta, PitchBook, and Y Combinator.

8 min read·

#fundraising#pre-seed

MetricsMay 8, 2026

Complete Guide to Customer Acquisition Cost (CAC)

Deep-dive into calculating CAC across channels — what to include, what to exclude, what healthy looks like by stage, and the mistakes that make investors question your numbers.

6 min read·

#cac#unit-economics

FoundersMay 9, 2026

What I Learned from My First Failed Startup

The honest story of a first startup that didn't make it — what went wrong, what I learned, and why failing early might be the best thing that ever happened to me.

7 min read·

#failure#founder-lessons

AcceleratorsMay 10, 2026

The Complete Y Combinator Application Guide

How to write a YC application that actually gets you an interview — the exact questions, what partners look for, the video, the interview, and what the data says about who gets in.

9 min read·

#y-combinator#yc

GTM & GrowthMay 11, 2026