YC AI visibility / Winter 2019
Most AI-visible companies in YC Winter 2019
We scored 50 active B2B and fintech companies from Y Combinator's Winter 2019 batch on how easily ChatGPT, Perplexity, Claude and AI agents can find, understand and use them. Cosmic leads with 98/100. Data from our crawl on October 18, 2026; scores are a homepage snapshot, not live.
Winter 2019 average score
All-YC average (+4 for this batch)
of this batch have no llms.txt (all YC: 55%)
| # | Company | Score | Crawlers | Content | Schema | Agents |
|---|---|---|---|---|---|---|
| 1 | Cosmic cosmicjs.com | 98 | 95 | 100 | 100 | 100 |
| 2 | Caribou usecaribou.com | 95 | 95 | 100 | 100 | 83 |
| 2 | Sapling.ai sapling.ai | 95 | 95 | 87 | 100 | 100 |
| 4 | Ashby ashbyhq.com | 93 | 95 | 94 | 100 | 83 |
| 4 | Demodesk demodesk.com | 93 | 92 | 100 | 100 | 83 |
| 4 | Mobot mobot.io | 93 | 95 | 94 | 100 | 83 |
| 4 | Numero numero.ai | 93 | 95 | 100 | 88 | 83 |
| 4 | Termius termius.com | 93 | 100 | 89 | 100 | 83 |
| 9 | Aura Vision auravision.ai | 92 | 95 | 94 | 100 | 78 |
| 9 | GoLinks golinks.io | 92 | 92 | 94 | 100 | 83 |
| 11 | FIRST firstdelivery.com | 91 | 95 | 100 | 88 | 74 |
| 11 | Middesk middesk.com | 91 | 92 | 89 | 100 | 88 |
| 11 | NALA nala.com | 91 | 89 | 94 | 100 | 83 |
| 11 | Superb AI superb-ai.com | 91 | 95 | 87 | 100 | 83 |
| 15 | Alpaca alpaca.markets | 90 | 91 | 89 | 100 | 83 |
| 15 | Latchel latchel.com | 90 | 95 | 100 | 100 | 62 |
| 15 | OutRival, Inc. outrival.com | 90 | 95 | 94 | 100 | 71 |
| 15 | Sorting Robotics sortingrobotics.com | 90 | 92 | 94 | 100 | 74 |
| 15 | WeatherCheck weathercheck.co | 90 | 95 | 96 | 88 | 74 |
| 20 | Keynua keynua.com | 87 | 95 | 74 | 100 | 83 |
| 20 | Spire Law spirelawfirm.com | 87 | 92 | 94 | 88 | 71 |
| 22 | Landed gotlanded.com | 86 | 76 | 94 | 100 | 83 |
| 22 | Switchboard onswitchboard.com | 86 | 95 | 87 | 100 | 64 |
| 24 | Mudrex mudrex.com | 85 | 95 | 96 | 100 | 47 |
| 25 | Supernova supernova.io | 84 | 95 | 87 | 20 | 100 |
| 26 | Upsolve upsolve.org | 83 | 95 | 89 | 100 | 47 |
| 27 | AI Insurance aiinsurance.io | 80 | 95 | 94 | 88 | 35 |
| 27 | Avo avo.app | 80 | 95 | 89 | 20 | 83 |
| 27 | Emi Labs emilabs.ai | 80 | 95 | 94 | 100 | 26 |
| 27 | Okteto okteto.com | 80 | 95 | 94 | 8 | 83 |
| 27 | Shipper shipper.id | 80 | 100 | 81 | 100 | 35 |
| 32 | Truora truora.com | 79 | 95 | 94 | 20 | 71 |
| 33 | Postscript postscript.io | 78 | 95 | 72 | 100 | 47 |
| 34 | Ultralight ultralig.ht | 77 | 89 | 78 | 8 | 100 |
| 35 | Keeper keepertax.com | 75 | 95 | 100 | 20 | 47 |
| 36 | Globe globe.exchange | 73 | 95 | 78 | 20 | 64 |
| 37 | Verto vertofx.com | 72 | 95 | 87 | 20 | 47 |
| 38 | Dagger dagger.io | 71 | 95 | 55 | 20 | 83 |
| 38 | Nabis nabis.com | 71 | 95 | 93 | 20 | 35 |
| 38 | Nowports nowports.com | 71 | 95 | 91 | 20 | 38 |
| 41 | Cuanto cuanto.app | 69 | 80 | 94 | 20 | 47 |
| 41 | Reelables reelables.com | 69 | 85 | 74 | 88 | 26 |
| 43 | Dyneti Technologies dyneti.com | 67 | 85 | 89 | 8 | 47 |
| 43 | Flockjay flockjay.com | 67 | 95 | 79 | 20 | 35 |
| 45 | Atlas atlascard.com | 66 | 100 | 68 | 20 | 38 |
| 45 | JuziBot juzibot.com | 66 | 95 | 91 | 8 | 26 |
| 47 | Canopy (was Encarte) heycanopy.com | 62 | 85 | 79 | 8 | 38 |
| 48 | Dockup getdockup.com | 55 | 80 | 61 | 8 | 38 |
| 49 | Spring in Africa springinafrica.com | 52 | 85 | 49 | 20 | 26 |
| 50 | PatternFast (prior patternfast.com | 44 | 95 | 14 | 8 | 26 |
Sub-scores: Crawlers = AI crawler access, Content = answer-engine content, Schema = structured data, Agents = agent readiness (llms.txt, API/MCP). Ties share a rank.
YC Winter 2019 vs all of YC
| Area | Winter 2019 | All YC |
|---|---|---|
| Overall score | 81 | 77 |
| AI crawler access | 93 | 93 |
| Answer-engine content | 86 | 82 |
| Structured data | 65 | 62 |
| Agent readiness | 64 | 56 |
Most common gaps in YC Winter 2019
Want to climb the leaderboard? The RankRoot Traffic Boost ($49 once) includes 7 days of Pro to audit up to 50 pages per scan and generate llms.txt, llms-full.txt and per-page JSON-LD, and your product featured across RankRoot for 30 days (homepage, launch directory, your industry page and the tool AI agents use to find products), live today with a dofollow link and a public count of every visitor sent. Get the Traffic Boost · $49 · or have it done for you
Show your rank in YC Winter 2019
Add a badge to your site, docs or README that links to this leaderboard. Replace cosmicjs.com with your domain, or copy the ready-made snippet from your company's page. Example for Cosmic:
<a href="https://getrankroot.com/yc/winter-2019"><img src="https://getrankroot.com/api/badge/yc?domain=cosmicjs.com" alt="YC Winter 2019 · AI visibility #1 of 50" height="20"></a>
[](https://getrankroot.com/yc/winter-2019)
Other YC batches
All YC companiesFall 2026Summer 2026Spring 2026Winter 2026Fall 2025Summer 2025Spring 2025Winter 2025Fall 2024Summer 2024Winter 2024Summer 2023Winter 2023Summer 2022Winter 2022Summer 2021Winter 2021Summer 2020Winter 2020Summer 2019Summer 2018Winter 2018Summer 2017Winter 2017Summer 2016Winter 2016Summer 2015Winter 2015Summer 2014Winter 2014Summer 2013Winter 2013Summer 2012Winter 2012Summer 2011Winter 2011
Methodology: how the YC dataset was built. Batch labels come from Y Combinator's public directory; RankRoot is not affiliated with Y Combinator.