YC active company list audit

Helicone

Helicone: LLM Observability for Developers. Headquartered in San Francisco, CA, United States. Current operating status: acquired.

Oomira checked this YC company record against source evidence and keeps the current facts, observed dates, and provenance visible before the interactive app loads.

18 facts2 sources3 superseded claims

What changed in the audit

external name

Prompt Zero -> Helicone
2026-06-12 · yc-oss record id 27919: field "former_names" includes "Prompt Zero"

external name

TableTalk -> Helicone
2026-06-12 · yc-oss record id 27919: field "former_names" includes "TableTalk"

external name

Valyr -> Helicone
2026-06-12 · yc-oss record id 27919: field "former_names" includes "Valyr"

Summary: LLM Observability for Developers
Description: Helicone.ai is creating an advanced observability platform tailored for developers working with Large Language Models (LLMs). Our goal is to simplify and enhance the operational s...
Website: https://www.helicone.ai/
Headquarters: San Francisco, CA, United States
Operating status: acquired
Industry: B2B
Industry: Analytics

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