Weights and Biases competitors

Open-source observability platform providing dashboards, metrics, logs, and traces, recognized as a Leader in the 2025 Gartner Magic Quadrant for Observability Platforms.

Observability and AI Monitoring · Series E $250M

Observability and AI Monitoring

Series E

$250M

HQ

Cloud-scale observability platform that added LLM Observability for end-to-end tracing across AI agents with visibility into inputs, outputs, latency, token usage, and errors.

Observability and AI Monitoring · IPO $648M

Observability and AI Monitoring

IPO

$648M

HQ