Inference cost is the cost of running AI models to generate outputs, as opposed to training cost which is paid once to create the model. It is measured in dollars per million tokens for LLMs, dollars per image for image generation, and per second for audio and video. Inference cost is the operational cost that determines AI application unit economics, and it has declined dramatically (10-100x) from 2023 to 2026 due to model efficiency improvements, hardware advances, and competitive pricing pressure. It's the cost that scales with usage; getting it right is essential to AI application economics.
The mid-2026 inference cost benchmarks:
| Model class | Input cost (per 1M tokens) | Output cost (per 1M tokens) |
|---|---|---|
| Frontier models (G... |
Vintage year is the year a venture capital fund started deploying capital, typically the year of the fund's first investment or first capital call. The convention applies across PE funds, real estate funds, and other private investment vehicles, and is used by LPs and fund analysts to compare fund performance against peer funds from the same market environment and vintage cohort. It is a critical metric for evaluating fund manager skill versus market timing because funds raised in different years face dramatically different market conditions.
The structural logic: a 2020 vintage fund deploying $200M during 2020-2025 entered the market at very different valuations than a 2022 vintage fund deploying the same capital during 2022-2...
Pre-seed funding is the earliest outside capital a startup raises, typically $250K-$1.5M, occasionally up to $2M for hot teams or sectors. It is used to validate a problem, build a working prototype, or assemble a founding team before there is meaningful revenue, and almost always raised via post-money SAFEs rather than priced equity rounds. It exists as a distinct round because seed rounds grew substantially through the 2010s, creating a gap below them that pre-seed now fills.
The 2025 benchmarks (Carta and PitchBook):
| Metric | 2025 typical range | Notes |
|---|---|---|
| Round size | $250K-$1.5M | Up to $2M for hot teams or AI/deep-tech sectors |
| SAFE cap (valuation cap) | $5M-$15M | Hot teams or specific sectors can push to $20M-$25M |
| Dilutio... |
KPIs (Key Performance Indicators) are the small, deliberately-chosen set of measurable metrics that track progress against strategic objectives. They're used to align teams around what matters, identify performance issues early, and provide consistent reporting cadence to stakeholders (leadership, board, investors). The discipline is choosing the few metrics that actually drive decisions, typically 5-10 at company level and 3-5 per team, rather than tracking dozens of metrics that produce dashboards nobody acts on. The difference between effective and ineffective KPI programs is primarily about choice (which metrics) rather than measurement (how to track).
What makes a metric a KPI:
Strategic significance: tracks something that genuine...
A C corporation, or C corp, is a legal business entity taxed separately from its owners under Subchapter C of the IRS code. The company pays corporate income tax at the entity level, while providing limited liability protection to shareholders. C corps can issue multiple classes of stock and can have unlimited shareholders of any type, including corporations, partnerships, and foreign entities. It is the default legal structure for venture-backed startups in the United States and is required by most venture capital investors.
The defining feature of a C corp is the legal and tax separation between the company and its owners. The company files its own tax return (Form 1120) and pays federal corporate income tax (a flat 21 perce...
Business strategy is the integrated set of choices that determines how a company creates and captures unique value. It includes which markets to serve (and which to exclude), how to position relative to competitors, what to build vs buy vs partner for, how to win in chosen markets, and what trade-offs to accept. The discipline is making explicit choices that produce a differentiated position rather than defaulting to generic "be excellent everywhere" non-strategy that produces no actual competitive advantage. Strategy is choices; without choices, there's no strategy.
What strategy actually is (per Michael Porter and others):
Choices about scope:
Brand positioning is the strategic choice that defines the category, target customer, competitive set, and distinct value a brand represents in the buyer's mind. It is expressed through a positioning statement and reinforced consistently across every customer touchpoint (product, pricing, messaging, channels, visual identity, customer experience). It is the foundational decision that the rest of marketing executes against; bad positioning makes great execution impossible.
The classical positioning frame goes back to Al Ries and Jack Trout's 1981 book Positioning: The Battle for Your Mind, which argued that positioning happens in the buyer's mind, not in the marketer's deck, and that the strongest position is the one that's...
Quota attainment is the percentage of a sales target (quota) a rep or team achieves in a defined period. Two views matter: individual attainment (this rep hit 120% of quota) and team attainment rate (60% of reps hit at least 100% of quota). The team-level rate is the most-watched health metric in B2B sales operations. Healthy teams have 60-70%+ of reps at or above quota. Below 50% signals systematic problems: quota too high, leads too thin, product-market fit issues, hiring problems, or all four.
The math:
Individual attainment = Actual bookings ÷ Quota
A rep with $1M quota who books $850K has 85% attainment.
Team attainment rate = % of reps at or above 100% quota
A 10-person team where 7 hit 100%+ has 70% team attainment.
...Working capital is the difference between current assets and current liabilities, measuring short-term liquidity and ability to meet operational obligations. Current assets include cash, A/R, inventory, and short-term investments; current liabilities include A/P, accrued expenses, deferred revenue, and short-term debt. Positive working capital means more current assets than current liabilities; negative working capital is normal for some business models (subscription companies with annual billing) and concerning for others (companies that owe more than they can collect).
The math:
Working capital = Current assets - Current liabilities
Current assets include:
Market size is the total revenue potential of a market, typically expressed via the TAM/SAM/SOM framework. It's used to communicate the scale of the opportunity to investors, board, and team, and to inform strategic decisions about market entry and expansion. The discipline is to estimate market size bottoms-up (specific customer counts × prices) rather than tops-down (small percentage of huge market), because tops-down estimates are universally distrusted by sophisticated investors. It is one of the most-scrutinized elements of fundraising pitches.
The standard framework:
TAM (Total Addressable Market):