#YC Alumni

Build AI agents by writing in plain English

DeepEval-powered LLM evaluation and observability

Data labeling and AI infrastructure platform powering frontier models for enterprises and governments.

The fastest AI coding assistant for JetBrains IDEs.

AI-native multimodal lakehouse for vector search, training data, and retrieval.

Learn to speak a new language with AI

Understand any codebase instantly — semantic code search powered by AI

Quality control for your software factory with AI checks on every pull request.

AI calendar + project manager that auto-prioritizes your day.

Helicone is an AI gateway and LLM observability platform that helps companies route, debug, and analyze their AI applications.