Callback

Why it ranks #931

Callback, an Agent and workflow builder platform from YC S24, ranks #931 of 999 AI agents and #32 of 33 in Agent and workflow builder platform, with a score of 1.2 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

   1

   2 people.

   • +1
     2 people on its YC page2 people

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

3. Momentum

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

   0

   Nothing new in the last 6 months.

   Not found: launch YC post in the last 6 months (+3), open roles on YC (+2), 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 Summer 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: 74% likely
   • Finishes whole tasks: 15% likely
   • Calls itself an agent: 4% likely
   • An AI-native service: it sells the finished work, so it counts as an agent at any level

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

About Callback

Founders

• AXAlan XieFounder/CEO
• PBPaulo BautistaFounder (COO)

Launches and news

1. Launch YC4 Sep 2024Callback - AI business process outsourcingA faster and more accurate AI-native BPO.

Alternatives in Agent and workflow builder platform

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

1. 1Glean AgentsAgent and workflow builder platformby GleanGlean’s agentic engine lets agents reason through tasks, plan next steps, and take action using enterprise context.Proof2Scale10Momentum6Autonomy8Score6.3
2. 2HappyRobotAgent and workflow builder platformS23Intelligence that runs your operations.Proof0Scale9Momentum3Autonomy8Score4.6
3. 3SkyvernAgent and workflow builder platformS23Open Source AI Agent to automate browser workflows via an APIProof0Scale4Momentum7Autonomy8Score4.2
4. 4GumloopAgent and workflow builder platformW24The multiplayer AI agent builder. Let anyone build, IT controls accessProof0Scale8Momentum2Autonomy8Score4.1
5. 5DataleapAgent and workflow builder platformS24AI Employees for the EnterpriseProof3Scale3Momentum3Autonomy8Score3.8
6. 32CallbackAgent and workflow builder platformS24Effortless AI automation for business operationsProof0Scale1Momentum0Autonomy6Score1.2

All 33 Agent and workflow builder platform agents →