A seed round is a startup's first substantial round of outside investment. It is raised to turn a working product into early traction and to reach signs of product-market fit, typically following pre-seed capital and preceding a Series A. It's the round where the company transitions from "we're building something" to "we're building something people want," and where the bar for the next round (Series A) gets established.
The 2025 benchmarks (Carta and PitchBook):
| Metric | 2025 typical range | Notes |
|---|---|---|
| Round size | $2.5M-$5M | Hot AI/deep-tech can be $6M-$10M |
| Post-money valuation | $20M-$30M (median ~$24M) | All-time high in 2025; up from ~$18M in 2024 |
| Pre-money valuation | $18M-$25M | Subject to pool refresh placement |
| Founder dilution | ...
User experience (UX) is the total quality of a user's interaction with a product across usability, accessibility, performance, content, design, and emotional response. It treats the product as the experience the user actually has rather than just the interface they see, covering information architecture, visual design, and microinteractions. The term was coined by Don Norman at Apple in 1993 to capture everything that shapes how a person perceives and interacts with a system, beyond just visual design.
The components of modern UX work cluster into roughly six areas: usability (can the user accomplish what they're trying to do, with what speed and what error rate), information architecture (how content and functionality are o...
A convertible note is a short-term debt instrument that converts into equity at the company's next priced round rather than being repaid in cash. It typically carries four key terms: an interest rate, a maturity date, a conversion discount, and often a valuation cap, combining the speed of a loan with the upside structure of equity. It was the dominant pre-seed and seed instrument from roughly 2005 until 2013, when Y Combinator introduced the SAFE and the market gradually shifted.
The four key terms, with typical 2025 ranges:
| Term | Typical range | What it does |
|---|---|---|
| Interest rate | 4-8% per year | Accrues until conversion; rarely paid in cash |
| Maturity | 18-36 months | Note must convert, be repaid, or be extended by this date |
| Conv... |
Cashless exercise is the option-exercise method where the holder simultaneously exercises options and sells enough resulting shares to cover the strike price and tax withholding. It lets the holder convert vested options into net shares (or net cash) without putting up cash for the exercise, typically requiring a public market or a contemporaneous private secondary, making it standard at public companies but rare at private startups absent a tender offer. It is the practical solution to the cash-binding problem of traditional exercise at companies where the strike-price outlay would otherwise be substantial.
The two main cashless exercise variants:
An initial public offering (IPO) is the process of selling shares of a private company to the public for the first time. Listed on NYSE, Nasdaq, or international equivalents, an IPO is traditionally the marquee exit path for venture-backed companies, with investment-bank underwriters pricing the offering, allocating shares to institutional buyers, and the company raising primary capital in the process. It is also one of the rarest exit outcomes statistically, despite getting the bulk of the press coverage.
The standard process runs roughly: file a confidential S-1 with the SEC, respond to SEC comments through 2 to 4 rounds, conduct a [Roadshow] where executives pitch institutional investors over 1 to 2 weeks, price the offering the nigh...
QSBS (Qualified Small Business Stock) is an IRS provision under Section 1202 that excludes up to $10M-$15M (or 10x basis) in capital gains from federal tax. The One Big Beautiful Bill Act (signed July 4, 2025) created a two-regime structure: stock issued on or before July 4, 2025 follows the pre-OBBBA rules ($10M or 10x cost basis cap, $50M gross-assets ceiling, 5-year hold for the full exclusion); stock issued after July 4, 2025 follows the OBBBA rules ($15M cap inflation-adjusted after 2026, $75M gross-assets ceiling, tiered holding with 50% exclusion at 3 years, 75% at 4 years, 100% at 5 years, maximum exclusion up to $750 million). The exclusion is available to founders, early employees, and early investors. It is one of the most v...
The people side of building a company. This cluster covers founder roles and dynamics, the executive lineup, the hiring sequence, sales and customer success roles, compensation and equity, performance management, layoffs and severance, and the culture and operations that determine whether the team holds together. 63 entries.
If your business succeeds or fails on hiring (most do), this is the cluster you live in.
Everything about raising capital, from the first SAFE to the IPO. This cluster covers every named stage (pre-seed through Series E+), the investor types (VC, CVC, angels, family offices, crossover funds, strategic vs financial), the fund mechanics that drive investor behavior (LPs, GPs, fund life, carried interest), the crowdfunding regulations and platforms, the round structures (up, down, flat, bridge, extension), and the closing mechanics that make deals real. 97 entries.
This is the most thoroughly covered cluster in the lexicon because fundraising decisions compound for years.
A prototype is a working or simulated representation of a product used to test concepts, flows, interactions, or feasibility before committing to full development. It ranges in fidelity from paper sketches to clickable mockups to fully functional code, and should be chosen at the lowest fidelity that can answer the question being asked. It is the cheapest tool in the product discovery toolbox, and the one most consistently underused by founders who jump straight to building.
The fidelity ladder runs from low to high: paper sketches (cheapest, fastest, useful for concept testing and flow validation), wireframes (digital low-fidelity layouts, Balsamiq-style or in Figma), clickable mockups (interactive Figma / Sketch prototypes that ...
A startup is a young company built to find and scale a repeatable, high-growth business model under conditions of high uncertainty. It is distinguished from a traditional small business by its pursuit of rapid growth rather than steady-state operation, defined by what it is searching for (a working, scalable model) rather than by its age, size, or industry.
The two most-cited definitions come from the founders of the modern startup playbook. Steve Blank: "A startup is a temporary organization designed to search for a repeatable and scalable business model." Paul Graham of Y Combinator: "A startup is a company designed to grow fast." Both definitions point to the same idea, that the defining feature of a startup is the search for and...