Generative AI is the category of AI systems that create new content (text, images, code, audio, video, 3D) rather than classifying or analyzing existing data. The November 2022 release of ChatGPT marked the cultural and commercial inflection point that transformed generative AI from research curiosity to mainstream technology used by hundreds of millions of people within months. It's the category of AI that produces output rather than just labels or predictions.
The pre-ChatGPT history (compressed):
2014: Generative Adversarial Networks (GANs) introduced. First major generative image breakthrough.
2017: Google's "Attention is All You Need" paper introduces the Transformer architecture (the foundation for modern LLMs).
2018: Op...
Demo day is the event ending an accelerator program where each startup pitches a large invited audience of investors in 2 to 6 minutes. The audience also includes press, partners, and ecosystem players, and the pitch is designed to drive follow-up meetings and term sheets within the days and weeks after the event. It is the marquee fundraising moment for accelerator cohorts and has become a meaningful slice of the early-stage venture funding rhythm, often serving as the early-stage alternative to a traditional [Roadshow].
The format and major examples: Y Combinator demo day (the canonical version, originated 2005, now hosts the largest invited investor audiences for any accelerator; YC demo days have moved between in-person and rem...
A side letter is a separate agreement granting a specific investor terms or rights different from those given to other investors in the same round. Also used between a VC fund and one of its LPs, side letters accommodate investor-specific requirements such as enhanced information rights, lower fees, tax-related representations for tax-exempt investors, restrictions on certain investment activities, or other bespoke provisions, without modifying the main financing documents that apply to all investors. Side letters are the mechanism by which differentiated investor relationships get formalized while keeping the primary deal documents uniform.
The common uses in venture financing:
An up round is a funding round raised at a higher valuation than the company's previous round. It signals that the company has grown in value since the last financing and dilutes existing shareholders less per dollar raised than a flat or down round would. Up rounds are the default expectation in a healthy venture trajectory: each round prices the company higher than the last as it hits milestones, grows revenue, and demonstrates the path to the next milestone.
Typical step-up benchmarks (2025):
| Round transition | Healthy step-up | Strong step-up | Suspect step-up |
|---|---|---|---|
| Seed → Series A | 2-3x | 3-5x | >5x (sets very high bar) |
| Series A → Series B | 2-3x | 3-4x | >4x |
| Series B → Series C | 1.5-2.5x | 2.5-3.5x | >3.5x |
| Series C → Series D+ | 1.3-2x | 2-3x | >... |
The Jumpstart Our Business Startups (JOBS) Act is bipartisan US legislation signed into law in April 2012 that liberalized US securities regulations for smaller companies. It had three major impacts on startup fundraising: (1) creating the framework for equity crowdfunding under Regulation CF (operationalized 2016), (2) expanding Regulation A from a rarely-used $5M cap into Reg A+ with a $50M cap (later raised to $75M), and (3) creating the Emerging Growth Company (EGC) category that simplified IPO disclosure requirements for companies under $1.235 billion (2024 threshold) in revenue. It is the most significant securities-law reform affecting startup capital access in decades.
The three major changes:
A sales pipeline is the staged view of all potential deals currently moving through a company's sales process. Each deal is assigned to a stage (Lead, Qualified, Discovery, Proposal, Negotiation, Closed-Won/Closed-Lost) and weighted by close probability. The pipeline is used to forecast revenue, evaluate sales rep productivity, identify bottlenecks in deal progression, and drive sales-team capacity planning. It's the most-watched operational view in any sales-led B2B company.
The standard pipeline stages:
| Stage | What it means | Typical close probability |
|---|---|---|
| Lead / MQL | Marketing-qualified inbound, not yet contacted | 5-10% |
| SQL / Discovery | Qualified by sales, discovery call scheduled | 10-20% |
| Demo / Solution | Product demo comple... |
A crossover investor is an investor that participates in both private late-stage venture rounds and public-market follow-on rounds after companies IPO. The private participation typically covers Series D, E, F or pre-IPO rounds, bridging the traditional divide between private VC and public-market investors and often providing the "crossover" round that signals a company's readiness for IPO. The investor continues to hold and add to positions across the IPO event into the public market. It is the investor category that fills the gap between late-stage venture and traditional mutual funds, and the category that grew dramatically in the 2018-2022 period before contracting in 2022-2024.
The major crossover firms: Tiger Global...
A warm intro is an introduction to an investor (or customer, partner, hire) made by a mutual trusted contact who can vouch for the founder. It dramatically outperforms cold outreach in conversion rates (often producing 5-10x higher response rates and meeting conversion), with warm intros being the dominant path to investor meetings in the venture industry and the introduction format most investors strongly prefer. Cold outreach works occasionally; warm intros work systematically. A good warm intro is typically what unlocks the formal [Partner Introduction] inside a venture firm.
The warm-intro structure:
Double opt-in (standard practice):
Restricted stock is an outright grant of common stock subject to vesting and company repurchase rights for unvested shares. Used primarily for founders and very early employees in C-corp startups, the recipient owns the shares from grant date, can file an 83(b) election to lock in tax treatment at the near-zero grant-date value, and starts the long-term capital-gains holding clock immediately. It is structurally different from stock options (which are rights-to-buy, not ownership) and from RSUs (which are promises to deliver shares in the future).
The mechanic of a restricted stock award:
A scale-up is a company that has achieved product-market fit and entered the growth and scaling phase, typically 50-500 employees with predictable revenue growth. It is characterized by annual revenue growth rates of 20%+ year-over-year (often 40-100% for high-performers), maturing functional organization with department heads running their domains (VP Engineering, VP Sales, VP Marketing rather than founders running everything), Series B and later funding stages, and operational focus on scaling a proven model rather than discovering one. It is the structural phase between early-stage startup and mature company, with distinctly different operating dynamics from either.
The defining characteristics of scale-ups: