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CallingBox

S25
2 people|Active|Website
Developer ToolsSaaSInfrastructureAI
96°Major Pivot
Before

Auto-optimizer for AI agents

After

The API for AI phone calls

Full description — before

Our mission is to build self-improving AI agents. We're here to close the last mile reliability gap. Through calibrated llm judges and automatic evaluations, we help companies optimize their agents 10x faster than doing manual experimentation.

Full description — after

Make AI phone calls from a single API call.

Category shift
AI Coding AssistantsVoice AI & Customer Support
Summary

Company pivoted from building AI agent optimization tools to providing an API for making AI phone calls - completely different product, market, and use case.

Detected 2 days ago · 2026-04-22