| 600% | “600%” | Emily Weiss: Glossier achieved 600% growth two years in a row | Emily Weiss | Jul 26, 2017 | — |
| 390% | “390%” | Tan: Jeff Lawson was ousted from Twilio 199 days after voting protections expired | Garry Tan | May 22, 2026 | Supported |
| 300% | “300%” | Tan: Zepto does 1.5M daily orders with $3B GMV at $5B valuation | Garry Tan | Apr 18, 2025 | Supported |
| 200% | “200%” | Adora Cheung: Top YC Demo Day startups grow 5% to 10% weekly | Adora Cheung | Aug 1, 2019 | — |
| 200% | “200%” | Schwartz: Startups should target 100% to 200% SEO traffic growth | Eli Schwartz | Sep 27, 2018 | — |
| 150% | “150%” | Claude Code increased Anthropic engineer productivity by 150 percent | Boris Cherny | Feb 17, 2026 | — |
| 150% | “150%” | Blomfield: Early-stage B2B SaaS startups should target 125% to 150%+ NDR | Tom Blomfield | Dec 15, 2023 | — |
| 125% | “125%” | Blomfield: Early-stage B2B SaaS startups should target 125% to 150%+ NDR | Tom Blomfield | Dec 15, 2023 | — |
| 120% | “120%” | Blomfield: 110% to 120% NDR is a good benchmark for mature SaaS companies | Tom Blomfield | Dec 15, 2023 | — |
| 110% | “110%” | Blomfield: 110% to 120% NDR is a good benchmark for mature SaaS companies | Tom Blomfield | Dec 15, 2023 | — |
| 100% | “hundred percent” | Garry Tan: 80% to 90% test coverage is optimal for AI coding | Garry Tan | May 8, 2026 | — |
| 100% | “hundred percent” | Cherny uninstalled his IDE and lands 20 AI-written PRs daily | Boris Cherny | Feb 17, 2026 | — |
| 100% | “hundred percent” | Claude generates between 70 and 90 percent of Anthropic's codebase | Boris Cherny | Feb 17, 2026 | — |
| 100% | “hundred percent” | Anthropic built the Claude desktop app in 10 days using AI | Boris Cherny | Feb 17, 2026 | — |
| 100% | “hundred percent” | Garry Tan: Reaching 100% Test Coverage Supercharged Coding Velocity with Claude Code | Garry Tan | Feb 6, 2026 | — |
| 100% | “hundred percent” | Tan: Vibe coding cannot yet ship 100% solid production code in 2025 | Garry Tan | Dec 22, 2025 | — |
| 100% | “100%” | Chollet: Ten random people with majority voting score 100% on ARC-2 | François Chollet | Jul 3, 2025 | Open |
| 100% | “hundred percent” | Fei-Fei Li: AI capabilities have completely outrun theoretical understanding | Dr. Fei-Fei Li | Jul 1, 2025 | — |
| 100% | “hundred percent” | The best founders exhibit complete commitment to their current idea | Harj Taggar | Oct 11, 2024 | — |
| 100% | “hundred percent” | Taggar: 100% AI accuracy will create winner-take-all software markets | Harj Taggar | Nov 1, 2024 | — |
| 100% | “hundred percent” | Hu: YC startup DryMerge reached near-100% accuracy by adopting OpenAI's o1 | Diana Hu | Nov 1, 2024 | — |
| 100% | “hundred percent” | Hu: Startups do not die from crashes caused by excessive product demand | Diana Hu | May 30, 2024 | — |
| 100% | “hundred percent” | Flora: Scarcity of giant bootstrapped startups proves bootstrapping forever is suboptimal | Brad Flora | Mar 29, 2023 | — |
| 100% | “100%” | Blomfield: Early-stage B2B SaaS startups should target 125% to 150%+ NDR | Tom Blomfield | Dec 15, 2023 | — |
| 100% | “100%” | Blomfield: Sub-100% NDR means fixing churn before increasing sales spend | Tom Blomfield | Dec 15, 2023 | — |
| 100% | “100%” | Seibel: Investors who only attack competitors are just selling fear | Michael Seibel | Oct 28, 2022 | — |
| 100% | “hundred percent” | Adora Cheung: No single metric tells 100% of a startup's story | Adora Cheung | Aug 1, 2019 | — |
| 100% | “100%” | Buchheit: Focus is a startup's ultimate weapon against tech incumbents | Paul Buchheit | Oct 24, 2018 | — |
| 100% | “hundred percent” | Knoop: In-person retreats build interpersonal empathy necessary for text-heavy remote teams | Mike Knoop | Mar 6, 2019 | — |
| 100% | “hundred percent” | Patel Thompson rejected pivoting Poppy into a profitable, high-priced boutique agency | Avni Patel Thompson | Jan 30, 2019 | — |
| 100% | “100%” | Susskind: Quantum teleportation provides security impossible with classical protocols | Leonard Susskind | Dec 6, 2018 | Supported |
| 100% | “hundred percent” | Tyler Bosmeny sold Clever full-time before the product was even built | Tyler Bosmeny | Sep 26, 2018 | — |
| 100% | “100%” | Cannon: Zapier's early content mistakenly targeted Hacker News over actual customers | Craig Cannon | Sep 19, 2018 | — |
| 100% | “hundred percent” | Cannon: Startup content competes with Elon Musk smoking weed on Joe Rogan | Craig Cannon | Sep 19, 2018 | — |
| 100% | “hundred percent” | Doshi: Email and text verifications lose 60% to 70% of onboarding users | Suhail Doshi | Sep 12, 2018 | — |
| 100% | “100%” | Seibel: Founders should ignore product feedback from investors and friends | Michael Seibel | Sep 5, 2018 | — |
| 100% | “hundred percent” | Graham: Better to have 10% of Robert Morris than average full-time founders | Paul Graham | Sep 1, 2018 | — |
| 100% | “100%” | New Story uses 100% of public donations directly for home construction | Brett Hagler | Apr 4, 2018 | — |
| 100% | “hundred percent” | Altman: Seed investors must evaluate founder growth rate, not current polish | Sam Altman | Mar 6, 2018 | — |
| 100% | “hundred percent” | Thompson and her spouse use a strict alternating primary parent schedule | Avni Patel Thompson | Mar 2, 2018 | — |
| 100% | “hundred percent” | Altman: Brian Chesky spent 20 nights a month dining with non-reporting employees | Sam Altman | May 31, 2017 | — |
| 99.9% | “99.9%” | McGrew: Adding a 'nine' of AI reliability requires 10x more compute | Bob McGrew | Jan 31, 2025 | — |
| 99.9% | “99.9%” | Jocko Willink: Frontline operators out-decision distant commanders 99.9% of the time | Jocko Willink | Jul 20, 2018 | — |
| 99.9% | “99.9%” | Altman: Founders must delegate decisions, not just data-gathering | Sam Altman | May 1, 2017 | — |
| 99% | “99%” | Mellata: AI agent triage leaves a complex 1% requiring investigative dashboards | Karine Malata | Mar 31, 2026 | — |
| 99% | “99%” | Blomfield: In 5 years, 99% of people won't touch their system prompts | Tom Blomfield | May 23, 2025 | — |
| 99% | “99%” | Legal due diligence commoditized as clients refuse paying for manual review | Max Junestrand | Aug 26, 2025 | — |
| 99% | “99%” | McGrew: Adding a 'nine' of AI reliability requires 10x more compute | Bob McGrew | Jan 31, 2025 | — |
| 99% | “99%” | Hale: 99% of YC-Funded Founders Lack a True Founder Unfair Advantage | Kevin Hale | Jul 25, 2019 | — |
| 99% | “99%” | Brownlee: Publishing content at 95% is better than delaying for 99% | Marques Brownlee | Mar 21, 2019 | — |
| 99% | “99%” | Hale: Companies over-optimize for serendipitous chance encounters instead of focused execution | Kevin Hale | Mar 6, 2019 | — |
| 99% | “99%” | Petersen: Academic research ranked freight forwarding as most susceptible to automation | Ryan Petersen | Aug 30, 2018 | Supported |
| 99% | “99%” | Benjamin: Quantum error-correction threshold is now around 99% fidelity | Simon Benjamin | May 25, 2018 | Supported |
| 99% | “99%” | Benjamin: Topological codes brought quantum fault tolerance down to 99% threshold | Simon Benjamin | May 25, 2018 | Supported |
| 99% | “99%” | Buchheit: 99% of people only change behavior when forced | Paul Buchheit | Dec 26, 2016 | — |
| 98% | “98%” | Brex's AI Recruiting Agent Auto-Passes 98% of Security Checks | Pedro Franceschi | Jun 10, 2026 | — |
| 98% | “98%” | Tan: AGI is effectively already here for most knowledge worker tasks | Garry Tan | Nov 1, 2024 | — |
| 98% | “98%” | Young: Pre-mobile software missed the field, where 98% of work happens | Tracy Young | Jun 12, 2019 | — |
| 98% | “98%” | Altman: Vast Majority of People Try to Discourage High Ambition | Sam Altman | Nov 8, 2018 | — |
| 98% | “98%” | Petersen: Flexport is 95% to 98% outbound sales | Ryan Petersen | Aug 30, 2018 | — |
| 98% | “98%” | Slavin Predicts 98% of Americans Will Own Smartphones by 2019 | Kevin Slavin | Dec 6, 2017 | Didn’t hold up |
| 97% | “97%” | Hu: Confluence Labs Saturated the ARC-2 Benchmark at 97% Accuracy | Diana Hu | Mar 27, 2026 | Supported |
| 97% | “97%” | Zapier achieved 97% employee retention over a 12-month period | Wade Foster | Aug 18, 2017 | — |
| 95% | “95%” | Code-based reasoning strategies boosted Gemini 1.5 Flash performance from 5% to 95% | Ian Fisher | Feb 27, 2026 | Not publicly verifiable |
| 95% | “95%” | Masad: Developers will reliably run 1,000 concurrent AI agents within two years | Amjad Masad | Sep 12, 2025 | Open |
| 95% | “95%” | Englander: Model ML auto-generates near-complete earnings summaries from new releases | Chas Englander | Jul 31, 2025 | — |
| 95% | “95%” | Friedman: 25% of YC founders report over 95% AI-generated codebases | Jared Friedman | Mar 5, 2025 | — |
| 95% | “95%” | Zaparde: Airbnb revenue dropped ~95% during initial March 2020 lockdowns | Rujul Zaparde | Jan 8, 2025 | Supported |
| 95% | “95%” | Seibel: 95% of extrinsically motivated startups die within three years | Michael Seibel | Jan 5, 2022 | — |
| 95% | “95%” | Rossmann: MOOCs have an industry standard completion rate of 2% to 5% | Jeremy Rossmann | Jun 19, 2019 | Supported |
| 95% | “95%” | Brownlee: Publishing content at 95% is better than delaying for 99% | Marques Brownlee | Mar 21, 2019 | — |
| 95% | “95%” | Werner Vogels: 95% of AWS features are direct customer requests | Dr. Werner Vogels | Nov 11, 2018 | — |
| 95% | “95%” | Gil: The most successful startups succeed regardless of their investors | Elad Gil | Oct 18, 2018 | — |
| 95% | “95%” | Founders anchor on rare praise and ignore overwhelming negative feedback | Mathilde Collin | Oct 3, 2018 | — |
| 95% | “95%” | Petersen: Flexport is 95% to 98% outbound sales | Ryan Petersen | Aug 30, 2018 | — |
| 95% | “95%” | Zapier adopted the Manager Tools podcast framework for internal company management | Wade Foster | Aug 18, 2017 | — |
| 95% | “95%” | Shanahan: Ex Machina's script was 95% complete before his advisory involvement | Murray Shanahan | Jun 28, 2017 | — |
| 95% | “95%” | Buchheit: Median startup is worth zero and 95% are bad investments | Paul Buchheit | Dec 26, 2016 | — |
| 93% | “93%” | A 7% monthly churn rate compounds to a 58% annual revenue loss | Suhail Doshi | Sep 12, 2018 | Supported |
| 91% | “91%” | Adora Cheung: Tracking one primary metric outweighs juggling multiple variables | Adora Cheung | Aug 1, 2019 | — |
| 90% | “90%” | Garry Tan: 80% to 90% test coverage is optimal for AI coding | Garry Tan | May 8, 2026 | — |
| 90% | “90%” | Claude generates between 70 and 90 percent of Anthropic's codebase | Boris Cherny | Feb 17, 2026 | — |
| 90% | “90%” | Tan: Enterprise incompetence slows down dangerous AI fast takeoff | Garry Tan | Dec 22, 2025 | — |
| 90% | “90%” | Musk: There is a 10% to 20% chance AI causes annihilation | Elon Musk | Jun 19, 2025 | — |
| 90% | “90%” | Garry Tan: Up to 90% of Current Y Combinator Startups Are AI | Garry Tan | Apr 4, 2025 | — |
| 90% | “90%” | Heller: Most AI app developers fail to run evaluations or study workflows | Jake Heller | Oct 28, 2025 | — |
| 90% | “90%” | Blomfield: 90% of B2B Founders Get Stuck in Unpaid Design Partnerships | Tom Blomfield | Aug 15, 2025 | — |
| 90% | “90%” | Founders should expect to throw away 90% of their early startup code | Nicolas Dessaigne | Nov 26, 2024 | — |
| 90% | “90%” | Taggar: 90% of prospective founders should prioritize finding a co-founder over starting solo | Harj Taggar | Sep 27, 2024 | — |
| 90% | “90%” | Pei: 90% of Nothing's first 5,000 Ear (1) units had charging defects | Carl Pei | Aug 13, 2024 | — |
| 90% | “90%” | Pei: Early hardware founders must act like Tim Cook, not Jony Ive | Carl Pei | Aug 13, 2024 | — |
| 90% | “90%” | Blomfield: The value equation gets 80% to 90% of pricing right | Tom Blomfield | Jul 25, 2024 | — |
| 90% | “90%” | Blomfield: Software startups should target 80% to 90% gross margins | Tom Blomfield | Jul 25, 2024 | — |
| 90% | “90%” | Taggar: VCs lack deep insights and know enough to be dangerous | Harj Taggar | Apr 29, 2022 | — |
| 90% | “90%” | Adora Cheung: Tracking one primary metric outweighs juggling multiple variables | Adora Cheung | Aug 1, 2019 | — |
| 90% | “90%” | Adora Cheung: No single metric tells 100% of a startup's story | Adora Cheung | Aug 1, 2019 | — |
| 90% | “90%” | Hua: 90% of California cannabis dispensaries are mom-and-pop shops | David Hua | Oct 11, 2018 | — |
| 90% | “90%” | Ning: Over 90% of transactions for cannabis distributor Nabis are cash | Vincent Ning | Oct 11, 2018 | — |
| 90% | “90%” | Rossmann: 90% of Make School students choose full Income Share Agreements | Jeremy Rossmann | Jun 19, 2019 | — |
| 90% | “90%” | Vidit Aatrey: 90% of Indian commerce occurs in mom-and-pop stores | Vidit Aatrey | May 22, 2019 | Supported |
| 90% | “90%” | 90% of Meesho users are women and 80% live in smaller cities | Vidit Aatrey | May 22, 2019 | Partly supported |
| 90% | “90%” | Brownlee: Engine sound is overrated for the vast majority of car buyers | Marques Brownlee | Mar 21, 2019 | — |
| 90% | “90%” | Hale: Pausing Wufoo discussions after 15 minutes resolved 90% of issues naturally | Kevin Hale | Mar 6, 2019 | — |
| 90% | “90%” | Khosla: 90% of VCs add no value, 70% add negative value | Vinod Khosla | Jan 9, 2019 | — |
| 90% | “90%” | Altman: Taking random meetings pays off despite 90% being wasted time | Sam Altman | Nov 8, 2018 | — |
| 90% | “90%” | French-Owen: 90% of Node shops run code written by TJ Holowaychuk | Calvin French-Owen | Oct 10, 2018 | — |
| 90% | “90%” | Mathilde Collin: Slack cannot replace email for external business communication | Mathilde Collin | Oct 3, 2018 | — |
| 90% | “90%” | Modernized interfaces could keep workers in their inbox 90% of the time | Mathilde Collin | Oct 3, 2018 | — |
| 90% | “90%” | Mitchell: Rezi screens tenants better than independent landlords in 90% of cases | Sean Mitchell | May 4, 2018 | — |
| 90% | “90%” | Mr. Money Mustache: US car usage should be cut by 90% | Mr. Money Mustache | Sep 27, 2017 | — |
| 90% | “90%” | Allen: VCs Prefer Most of Their Portfolio Companies to Fail | Courtland Allen | Sep 25, 2017 | — |
| 90% | “90%” | Wojcicki: 1969 JAMA study found 90% of doctors withheld cancer diagnoses | Anne Wojcicki | Apr 13, 2018 | Supported |
| 90% | “90%” | Altman: Ninety percent of angel capital goes into bad ideas disguised as good | Sam Altman | Mar 6, 2018 | — |
| 90% | “90%” | Chaudhary: ClassDojo is in 90% of US K-8 schools | Sam Chaudhary | Jan 24, 2018 | Supported |
| 90% | “90%” | Hackett: Startups cannot get acquired with only one month of runway | Matt Hackett | Nov 1, 2017 | — |
| 90% | “90%” | Kilar: 90% of people are not comfortable with Amazon-style culture | Jason Kilar | Jun 1, 2017 | — |
| 90% | “90%” | Nathu: Startup co-founders should generally split equity more or less equally | Kirsty Nathoo | Feb 23, 2015 | — |
| 87% | “87%” | Chaubard: 7M parameter TRM scored 87% on ARC Prize 1 | Francois Chaubard | May 1, 2026 | Contradicted |
| 85% | “85%” | Allred: Lambda School graduates more than 85% of its starting students | Austen Allred | Apr 3, 2019 | Contradicted |
| 83% | “83%” | Hale: 63% of 2018 Startup School participants were solo founders | Kevin Hale | Jul 3, 2019 | — |
| 81% | “81%” | Nahm: 81% of Lever's engineering team was proactively sourced | Sarah Nahm | Jul 10, 2019 | — |
| 80% | “80%” | Stuart: Bypassing NCCL intermediate buffers speeds up all-reduce by 80% | Stuart (Stu) | Jul 29, 2026 | Supported |
| 80% | “80%” | Anthropic Deleted 80% of Claude Code System Prompt for Opus 5 | Boris Cherny | Jul 27, 2026 | Supported |
| 80% | “80%” | Franceschi: Founders Should Build Custom AI Solutions for Unsolved Daily Problems | Pedro Franceschi | Jun 10, 2026 | — |
| 80% | “80%” | Ries: Twilio fired Jeff Lawson despite revenue growth since IPO | Eric Ries | May 22, 2026 | Supported |
| 80% | “80%” | Jha: 80% of Emergent users have zero programming knowledge | Mukund Jha | Mar 16, 2026 | — |
| 80% | “80%” | Steinberger: 80% of consumer apps will disappear due to AI agents | Peter Steinberger | Feb 7, 2026 | — |
| 80% | “80%” | Skates: The hype around AI killing SaaS is way overblown | Spencer Skates | Dec 3, 2025 | — |
| 80% | “80%” | Hu: Cursor usage in YC batches jumped from single digits to 80% | Diana Hu | Sep 3, 2025 | — |
| 80% | “80%” | Finn: Architectural fix boosted robot language following rate from 20% to 80% | Chelsea Finn | Jul 22, 2025 | Supported |
| 80% | “80%” | Field: Over 80% of Figma users are outside the United States | Dylan Field | Mar 13, 2025 | — |
| 80% | “80%” | The best founders exhibit complete commitment to their current idea | Harj Taggar | Oct 11, 2024 | — |
| 80% | “80%” | Hu: YC startup DryMerge reached near-100% accuracy by adopting OpenAI's o1 | Diana Hu | Nov 1, 2024 | — |
| 80% | “80%” | Seibel: Most YC office hours diverge entirely from founders' initial questions | Michael Seibel | Feb 23, 2023 | — |
| 80% | “80%” | Blomfield: Top consumer startups get over 80% of growth organically | Tom Blomfield | Jan 6, 2024 | — |
| 80% | “80%” | Alströmer: GitHub retains 80% of users after month one and 30% after five years | Gustaf Alströmer | Aug 15, 2019 | — |
| 80% | “80%” | Migicovsky: Top investors prefer startups targeting small initial markets | Eric Migicovsky | Oct 12, 2018 | — |
| 80% | “80%” | Ning: 80% of US cannabis historically came from California | Vincent Ning | Oct 11, 2018 | Partly supported |
| 80% | “80%” | Hockenmaier: Scaling to $100M revenue typically requires one dominant channel | Dan Hockenmaier | Jun 26, 2019 | — |
| 80% | “80%” | 90% of Meesho users are women and 80% live in smaller cities | Vidit Aatrey | May 22, 2019 | Partly supported |
| 80% | “80%” | Donohue: Only 16% of Instapaper URLs appeared on Pinterest on day one | Brian Donohue | Nov 14, 2018 | — |
| 80% | “80%” | As of 2018, Front's workforce was 80% San Francisco and 20% Paris | Mathilde Collin | Oct 3, 2018 | — |
| 80% | “80%” | Collison in 2018: Over 80% of US adults bought from Stripe merchants | Patrick Collison | Oct 3, 2018 | — |
| 80% | “80%” | Reinhardt: 80% of students ignored Segment's first product to browse Facebook | Peter Reinhardt | Sep 6, 2018 | — |
| 80% | “80%” | Rusenko: Weebly achieved an 80% NPS in its early days | David Rusenko | Sep 5, 2018 | — |
| 80% | “80%” | Altman: Building a product users spontaneously recommend is 80% of startup success | Sam Altman | Aug 29, 2018 | — |
| 80% | “80%” | Hoover: Manual Twitter outreach converted 80% of makers to join Product Hunt | Ryan Hoover | Oct 4, 2017 | — |
| 80% | “80%” | Altman: 80% of investors outsource 80% of decisions to other investors | Sam Altman | Mar 6, 2018 | — |
| 80% | “80%” | Choksi: Great content is 80% about killing bad ideas | Sonal Choksi | Oct 13, 2017 | — |
| 80% | “80%” | Bartram: Top Engineers Pass at Most 80% of Their Tech Interviews | Ammon Bartram | May 17, 2017 | — |
| 80% | “80%” | Bartram: 80% of Published Interview Advice Fails Under Empirical Testing | Ammon Bartram | May 17, 2017 | — |
| 80% | “80%” | Musk: 80% of my time is spent on engineering and design | Elon Musk | Sep 15, 2016 | — |
| 79% | “79%” | Emily Weiss: 79% of Glossier's growth came from peer-to-peer recommendations | Emily Weiss | Jul 26, 2017 | — |
| 78% | “78%” | Dill: Over 78% of the Forbes AI 50 use Stripe | Katie Dill | Apr 22, 2026 | Supported |
| 77% | “77%” | Emily Weiss: Glossier is 77% female with a 40% female tech team | Emily Weiss | Jul 26, 2017 | — |
| 75% | “75%” | Seibel: Subsidizing unit economics creates artificial demand that vanishes when prices rise | Michael Seibel | Jan 24, 2020 | — |
| 75% | “75%” | Srini: Roughly 75% of ZeroDown customers buy homes within three weeks | Laks Srini | Dec 11, 2019 | — |
| 75% | “75%” | Cutts: Around 75% of USDS personnel joined under the Trump administration | Matt Cutts | Dec 4, 2019 | Not publicly verifiable |
| 75% | “75%” | Rossmann: Up to 75% of elite university students have wealthy parents | Jeremy Rossmann | Jun 19, 2019 | Supported |
| 75% | “75%” | Garg: Gobble had 75% enterprise revenue when raising Series A | Ooshma Garg | Sep 8, 2018 | — |
| 75% | “75%” | Petersen: Flexport expects roughly 75% gross margins per clearance | Ryan Petersen | Oct 26, 2013 | — |
| 74% | “74%” | 74% of YC dev tool startups have exclusively technical co-founders | Nicolas Dessaigne | Nov 26, 2024 | — |
| 70% | “70%” | Chaubard: HRM scored 70% on ARC Prize 1 without pre-training | Francois Chaubard | May 1, 2026 | Partly supported |
| 70% | “70%” | Chaubard: 7M parameter TRM scored 87% on ARC Prize 1 | Francois Chaubard | May 1, 2026 | Contradicted |
| 70% | “70%” | Massad: Replit-native agencies are 60% to 70% cheaper than traditional firms | Amjad Masad | Apr 25, 2026 | — |
| 70% | “70%” | Mercury data shows 70 percent of startups choose Claude | Boris Cherny | Feb 17, 2026 | Contradicted |
| 70% | “70%” | Palicha: 70% of Zepto markets profitable, mature markets at 4-5% EBITDA | Aadit Palicha | Apr 18, 2025 | — |
| 70% | “70%” | Over 70% of the top 100 YC companies generated their ideas organically | Jared Friedman | Nov 17, 2022 | — |
| 70% | “70%” | Alströmer: Word of mouth drove over 50% of Airbnb guests and 70% of hosts | Gustaf Alströmer | Jun 26, 2019 | — |
| 70% | “70%” | Aatrey: 70% of Meesho users are housewives | Vidit Aatrey | May 22, 2019 | — |
| 70% | “70%” | Dennis: Just seven US furniture brands drive 65–70% of AptDeco's sales | Kalam Dennis | Dec 14, 2018 | — |
| 70% | “70%” | Khosla: 90% of VCs add no value, 70% add negative value | Vinod Khosla | Jan 9, 2019 | — |
| 70% | “70%” | Collison in 2018: Over 80% of US adults bought from Stripe merchants | Patrick Collison | Oct 3, 2018 | — |
| 70% | “70%” | Bosmeny: Top Salespeople Listen 70% of the Time on Calls | Tyler Bosmeny | Sep 26, 2018 | — |
| 70% | “70%” | Brundage: AI will achieve superhuman performance in StarCraft within three years | Miles Brundage | Apr 25, 2018 | Held up |
| 70% | “70%” | Fagiri: In-house delivery grew AptDeco word-of-mouth from 10% to 70% | Reham Fagiri | Oct 11, 2016 | — |
| 67% | “67%” | Epstein: SaaS, transactional, and marketplaces make up 67% of top YC startups | Aaron Epstein | Dec 15, 2022 | Supported |
| 67% | “67%” | Hua: 67% of California lacks local regulations, blocking state cannabis permits | David Hua | Oct 11, 2018 | Supported |
| 65% | “65%” | Pomel: Major Datadog Investor Dumped All Shares When COVID Lockdowns Began | Olivier Pomel | Jul 24, 2026 | Partly supported |
| 63% | “63%” | Hale: 63% of 2018 Startup School participants were solo founders | Kevin Hale | Jul 3, 2019 | — |
| 60% | “60%” | Ries: Foundation-owned companies are 6x more likely to reach year 50 | Eric Ries | May 22, 2026 | Partly supported |
| 60% | “sixty percent” | Tan: DoorDash holds mid-sixty percent of US food delivery market | Garry Tan | Mar 26, 2025 | Supported |
| 60% | “60%” | Xu: DoorDash has over 7 million drivers; nearly 60% are women | Tony Xu | Mar 26, 2025 | Supported |
| 60% | “60%” | Finn: Full Pre-Training Mixture Boosts Robot Performance Over 20% in Novel Homes | Chelsea Finn | Jul 22, 2025 | Supported |
| 60% | “60%” | Tan: $50M ARR YC company automated 60% of support to reach profitability | Garry Tan | Nov 1, 2024 | — |
| 60% | “60%” | Seibel: 60% of Y Combinator companies were previously rejected by YC | Michael Seibel | Apr 29, 2022 | — |
| 60% | “60%” | Reinhardt: 80% of students ignored Segment's first product to browse Facebook | Peter Reinhardt | Sep 6, 2018 | — |
| 60% | “60%” | Xie (2018): 60% of token sale funds are raised in presales | Linda Xie | May 2, 2018 | Supported |
| 60% | “60%” | Allen: About 60% of Indie Hackers traffic is outside the US | Courtland Allen | Sep 25, 2017 | — |
| 60% | “60%” | Altman leaves 50% to 60% of his schedule open for YC founders | Sam Altman | Feb 23, 2018 | — |
| 59% | “59%” | Hale: 63% of 2018 Startup School participants were solo founders | Kevin Hale | Jul 3, 2019 | — |
| 58% | “58%” | A 7% monthly churn rate compounds to a 58% annual revenue loss | Suhail Doshi | Sep 12, 2018 | Supported |
| 56% | “56%” | Ralston: 56% of companies finished Startup School last year | Geoff Ralston | Aug 7, 2018 | Supported |
| 55% | “55%” | Poetiq scored 55% on Humanity's Last Exam, outperforming Claude Opus 4.6 | Ian Fisher | Feb 27, 2026 | Supported |
| 54% | “54%” | Poetiq outperformed Gemini 3 Deep Think on ARC-AGI-2 at half the cost | Ian Fisher | Feb 27, 2026 | Supported |
| 53.1% | “53.1%” | Poetiq scored 55% on Humanity's Last Exam, outperforming Claude Opus 4.6 | Ian Fisher | Feb 27, 2026 | Supported |
| 52% | “52%” | Hu: Anthropic saw over 52% growth among YC applicant tech stacks | Diana Hu | Dec 22, 2025 | — |
| 52% | “52%” | Reeves: ~550k US Employers Form Yearly; 52% Reach Year Five | Josh Reeves | Mar 18, 2025 | Supported |
| 52% | “52%” | Hale: 63% of 2018 Startup School participants were solo founders | Kevin Hale | Jul 3, 2019 | — |
| 51% | “51%” | Ralston: Unequal equity splits like 51/49 are better to maintain control | Geoff Ralston | Sep 1, 2018 | — |
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