Retell AI

Why it ranks #232

Retell AI, an Agent and workflow builder platform from YC W24, ranks #232 of 999 AI agents and #7 of 33 in Agent and workflow builder platform, with a score of 3.5 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 · Score wrong? Suggest a change

1. Proof

   Do customers use it? 30% of the score

   0

   No public claims of customers or revenue yet.

   Not found: revenue or growth (+4), named customers (+3), a customer result (+2), a customer count (+2), work done at scale (+2)

2. Scale

   Is there a real company behind it? 30% of the score

   6

   50 people.

   • +6
     50 people on its YC page50 to 99 people

   Not found: funding round in its news (+3)

3. Momentum

   Is it shipping and growing now? 25% of the score

   3

   Shows hiring.

   • +3
     Hiring: 24 open rolesSenior Software Engineer, Backend, Senior Software Engineer, Full Stack, Senior Forward Deployed EngineerYC page

   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), a batch in the last year (it is YC Winter 2024) (+1)

4. 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: 68% likely
   • Finishes whole tasks: 23% likely
   • Calls itself an agent: 97% likely

   Level 2: Takes actions in other systems; a person approves key steps.

About Retell AI

Founders

• BWBing WuFounder
• TLTodd LiFounder
• EWEvie WangFounder
• WYWeijia YuFounder
• ZZZexia ZhangFounder

Launches and news

1. News9 May 2024Retell AI lets companies build 'voice agents' to answer phone calls | TechCrunch
2. Launch YC2 Feb 2024🔥 Retell AI – API for building human-like conversational voice AIWe help developers implement human-like voice agents in a day instead of months. Plug in your LLM, a voice agent in born!

Alternatives in Agent and workflow builder platform

The top Agent and workflow builder platform agents by score, with Retell AI in its place.

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