Langfuse (YC W23)

langfuse.com

San Francisco, California, United States

11-50 employees

LinkedIn Profile

About Langfuse (YC W23)

langfuse, large language models, observability, prompt management, evaluations, testing, open source, llm, ai, analytics, artificial intelligence, software development, evaluation tools, self-hostable ai engineering, trace data export, user and session tracking, application monitoring, human annotation integration, agent graph visualization, dataset evaluation

Langfuse (YC W23)'s Tech Stack

AI/ML

Database

Snowflake

DevOps

Docker

Communication

Discord

Mobile

Android

React Native

Backend

Laravel

Node.js

Phoenix

Cloud

Render

38 technologies detected · 2 decision makers · Emails available

Sales Outreach Angle

HubSpot users typically run inbound-led sales motions. Products that integrate with HubSpot (email automation, CRM enrichment, ABM platforms) are natural fits.

Langfuse (YC W23)'s Position in the StackWho Database

• Langfuse (YC W23) is 1 of 194,140 information technology & services companies tracked in StackWho.
• 193,618 information technology & services companies in our database have verified decision-maker emails (100% of the cohort).
• 53,147 companies in California are in the StackWho database.
• 74,148 information technology & services companies are in the 11-50 employee range (same size as Langfuse (YC W23)).

Technology detection from public web signals. Decision-maker contacts compiled from LinkedIn public profiles, company filings, and verified outbound testing. Methodology & sources · Updated August 2026.

Frequently Asked Questions

What technology does Langfuse (YC W23) use?

Langfuse (YC W23) uses Cloudflare DNS, Gmail, Google Apps, Microsoft Office 365, CloudFlare Hosting, MailChimp SPF, and 32 more technologies. This data is sourced from StackWho's technology detection engine.

How do I contact the decision makers at Langfuse (YC W23)?

StackWho has verified email addresses for 2 decision makers at Langfuse (YC W23). Pro members can access direct emails for the CEO, CTO, VP of Engineering, and other key contacts. Use StackWho to reach Langfuse (YC W23) directly for sales, recruiting, or partnerships.

What industry is Langfuse (YC W23) in?

Langfuse (YC W23) operates in the information technology & services industry, headquartered in San Francisco, California, United States. StackWho tracks technology stacks and decision maker contacts for companies across all industries.

Can I export Langfuse (YC W23)'s contact data?

Yes. StackWho Pro members can export decision maker contact data for Langfuse (YC W23) and similar companies to CSV. Use the export feature to build targeted prospect lists segmented by technology stack, industry, or location.