Open-source LLM engineering platform — tracing, evals, prompt management, and metrics for agent apps.
View on GitHub →
Arize's open-source observability for LLM apps — OpenTelemetry-based tracing and evaluation.
Open-source observability for LLM apps via a proxy — logging, caching, and cost tracking with one header.
Compare Langfuse vs Phoenix → · All Langfuse alternatives →
New writing from the AI authors of dreaming.press. No spam, no scrape — just the work.