Langfuse
Traces, evals, prompt management and metrics to debug and improve your LLM application. Onboard via https://langfuse.com Langfuse helps you build and improve LLM applications across the entire lifecycle: - Develop: Observability, Langfuse UI & Prompt Management - Monitor: Traces, Analytics, Metrics & Evaluations - Test: Experiments, Releases & Datasets We are hiring: https://langfuse.com/careers Langfuse was acquired by Clickhouse in January of 2026.
Y Combinator
yc-company-directory #5379Traces, evals, prompt management and metrics to debug and improve your LLM application. Onboard via https://langfuse.com Langfuse helps you build and improve LLM applications across the entire lifecycle: - Develop: Observability, Langfuse UI & Prompt Management - Monitor: Traces, Analytics, Metrics & Evaluations - Test: Experiments, Releases & Datasets We are hiring: https://langfuse.com/careers Langfuse was acquired by Clickhouse in January of 2026.
sourceLangfuse is classified as AI infrastructure from source descriptions and fund-directory context. Similar companies below are ranked from offline product facets and meaningful description overlap; category and source affiliation can only strengthen an existing product match. For lookup-created rows, the profile starts as pending enrichment until deeper source collection runs.
Local clusters rerank extracted product concepts and description terms. The generated graph remains the fallback for sparse descriptions: offline reciprocal product-similarity graph: extracted concepts + description terms + bounded category/affiliation boosts. Minimum fallback score: 0; max competitors: 6.
Companies similar to Langfuse
A deterministic local cluster built from offline product facets and meaningful description terms. Category and selected-institution affiliation provide bounded tie-breaks. Open any peer to continue exploring its cluster.
Parea
match 92Parea AI is the essential developer platform for debugging and monitoring every stage of LLM application development. We provide testing, evaluation, and monitoring in one unified platform. These capabilities help developers get visibility into LLM responses, quickly test and optimize prompts, and ensure customers get the best user experience.
shared extracted concept terms: evaluation, prompt, llm, application; shared product terms: prompt, llm, application, monitor; same category: AI infrastructure; shared affiliation: Y Combinator
Humanloop
match 74Humanloop is the LLM evals platform for enterprises. Teams at Gusto, Vanta and Duolingo use Humanloop to ship reliable AI products. We enable you to adopt best practices for prompt management, evaluation and observability.
shared extracted concepts: prompt management; shared product terms: llm, eval, prompt, management; same category: AI infrastructure; shared affiliation: Y Combinator
Hegel AI
match 70We build tools for developing applications with generative AI models. Whether you are using LLMs, vector databases, and text-to-image models like Stable Diffusion, our tools help you find the right model, prompt, configuration and consistently monitor their behaviors in production. --- **PromptTools**: the first open-source, developer-focused SDK for experimenting with and evaluating prompts, models, and vector databases. You can try the repo here: https://github.com/hegelai/prompttools. If you'
shared extracted concept terms: prompt; shared product terms: develop, application, prompt, monitor; same category: AI infrastructure; shared affiliation: Y Combinator
Watchsend
match 53Watchsend (YC S13) makes actionable software analytics that tells you where problems are and how to fix them by recording an entire app's state to extract behaviors, actionable analytics and visualize ordinary metrics in the context of the application's appearance, all in the familiar form of video.
shared extracted concept terms: analytic, application; shared product terms: metric, application, entire, analytic; shared affiliation: Y Combinator
SigNoz
match 53SigNoz is an open-source observability platform native to OpenTelemetry with logs, traces and metrics in a single application. An open-source alternative to DataDog, NewRelic, etc. Open source Application Performance Monitoring (APM) & Observability too
shared extracted concepts: observability; shared product terms: trace, metric, application, observability; shared affiliation: Y Combinator
Tech1M
match 52We solve hiring challenges for managers by matching them with skilled talent and streamlining the hiring process. Our platform offers video applications, global talent management, and secure payment options to reduce turnover and improve accessibility
shared extracted concept terms: management, application; shared product terms: management, improve, application, hiring