Cardinal

Revenue Agents for GTM teams

2.8Score#416 of 999 agents#21 of 44 in SDR

Why it ranks #416

Cardinal, an AI SDR from YC W26, ranks #416 of 999 AI agents and #21 of 44 in SDR, with a score of 2.8 of 10. Data as of 3 Oct 2026.

The score adds four parts, each 0 to 10, by weight. Every point comes from public evidence. How scoring works ·

Proof 3 × 30% 0.9
Scale 0 × 30% 0.0
Momentum 4 × 25% 1.0
Autonomy 6 × 15% 0.9
= 2.8

Proof
Do customers use it? 30% of the score
3
Claims named customers.
- +3
  Named customers
  “We’re launching Cardinal publicly today - co’s like Mintlify, Deepgram, Giga, etc. use us to build revenue agents & design how they sell.”
  YC page
Not found: revenue or growth (+4), a customer result (+2), a customer count (+2), work done at scale (+2)
Scale
Is there a real company behind it? 30% of the score
0
Team size and funding not listed.
Not found: funding round in its news (+3)
Momentum
Is it shipping and growing now? 25% of the score
4
Shows hiring and a new batch.
- +3
  Hiring: 5 open rolesFounding Engineer, Founding AE, Founding Design Engineer, CardinalYC page
- +1
  New: YC Winter 2026
Not found: launch YC post in the last 6 months (+3), new traction claim in the last 6 months (+2), funding news in the last year (+2)
Autonomy
How much of the job does it do on its own? 15% of the score
6
Supervised agent: takes actions in other systems; a person approves key steps.
- +6
  Level 2 of 4: Supervised agentTakes actions in other systems; a person approves key steps.
What the model read
- Acts in other systems: 81% likely
- Finishes whole tasks: 33% likely
- Calls itself an agent: 91% likely
Level 2: Takes actions in other systems; a person approves key steps.

About Cardinal

Hey YC! We're Devi and Jianna - the founders of Cardinal.

Hey guys! We’re launching Cardinal publicly today - co’s like Mintlify, Deepgram, Giga, etc. use us to build revenue agents & design how they sell.

The Problem

“Spray and Pray” outbound is dead. The best teams at outbound do it with extreme precision. Finding things in common with your customers, staying in touch with them through their content, mapping inbound from signups and ads, tracking website visitors, monitoring various signals, etc. This sounds great in theory, but in reality involves stringing together 10+ tools and hiring a GTM engineer.

That’s where Cardinal comes in.

Cardinal is an AI platform for precision outbound. Our agents can create workflows that normally require the work of fulltime GTM engineers.

If you're a founder or sales leader looking to bring AI into your sales org, would love to chat!