| Janet AIB2B | B2B | — | | janet.ai |
| JanusB2B | B2B | San Francisco, United States | Shivum Pandove | withjanus.com |
| JarminB2B | B2B | San Francisco, United States | | jarmin.ai |
| JinbaB2B | B2B | — | | jinba.io |
| JuxtaB2B | B2B | — | | juxta.com |
| Kaigo HealthHealthcare | Healthcare | San Francisco, United States | | kaigohealth.ai |
| KaizenB2B | B2B | — | | kaizenautomation.com |
| KalindaB2B | B2B | — | | kalinda.ai |
| Kalpa LabsB2B | B2B | — | | kalpalabs.ai |
| KarumiB2B | B2B | — | | karumi.ai |
| KERNELB2B | B2B | San Francisco, United States | | kernel.sh |
| Kestrel AIB2B | B2B | San Francisco, United States | | usekestrel.ai |
| Keyframe LabsB2B | B2B | — | | keyframelabs.com |
| Kimpton AIFintech | Fintech | San Francisco, United States | | kimpton.ai |
| KinroB2B | B2B | San Francisco, United States | Parth Ainampudi | kinro.ai |
| KitaFintech | Fintech | — | | usekita.com |
| Klaus AIB2B | B2B | — | | klausai.com |
| Klavis AIB2B | B2B | — | | klavis.ai |
| KnowlifyB2B | B2B | San Francisco, United States | | knowlify.com |
| KorsoB2B | B2B | San Francisco, United States | | korsoai.com |
| KoyalConsumer | Consumer | San Francisco, United States | | koyal.ai |
| Kyten TechnologiesIndustrials | Industrials | — | | kytentech.com |
| LabricB2B | B2B | — | | labric.co |
| LakoniaGovernment | Government | San Francisco, United States | | lakonia.us.com |
| Lamina LabsB2B | B2B | — | | laminalabs.ai |
| LanceB2B | B2B | — | | lance.live |
| LanesurfB2B | B2B | San Francisco, United States | | lanesurf.com |
| LapelB2B | B2B | — | | lapel.com |
| LapisB2B | B2B | San Francisco, United States | Varunram Ganesh | trylapis.com |
| LarkB2B | B2B | San Francisco, United States | | getlark.ai |
| LaurenceB2B | B2B | — | | trylaurence.com |
| LeadbayB2B | B2B | San Francisco, United States | | leadbay.ai |
| LegalOSB2B | B2B | — | | legalos.ai |
| LemmaB2B | B2B | San Francisco, United States | | uselemma.ai |
| LexiB2B | B2B | San Francisco, United States | | getlexi.io |
| LexiusB2B | B2B | — | | lexius.ai |
| Librar LabsB2B | B2B | San Francisco, United States | Jonathan Görtz | librarlabs.com |
| LightberryIndustrials | Industrials | San Francisco, United States | | lightberry.com |
| LilacB2B | B2B | San Francisco, United States | | getlilac.com |
| Liva AIB2B | B2B | San Francisco, United States | | theliva.ai |
| LocataHealthcare | Healthcare | New York, United States | | locatahealth.com |
| LocusB2B | B2B | — | | paywithlocus.com |
| LogicalB2B | B2B | San Francisco, United States | Sam Karu | logical.io |
| LogosGuardB2B | B2B | San Francisco, United States | | logosguard.com |
| LotasB2B | B2B | San Francisco, United States | | lotas.ai |
| Louiza LabsB2B | B2B | San Francisco, United States | | louizalabs.co |
| Lua Global IncB2B | B2B | — | | heylua.ai |
| LucentB2B | B2B | — | Alisa Rae | lucenthq.com |
| LucisHealthcare | Healthcare | Paris, France | | lucis.life |
| LuelB2B | B2B | — | | luel.ai |