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Langfuse vs Nysa

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Langfuse compared with Nysa
Detail LangfuseNysa logo Nysa
What it doesOpen Source Agent Evals & Observability Shared memory for regulated companies and their AI agents
StageEstablished Not given
FoundedNot given Not given
Based inDE US
Pricing modelFreemium Freemium
PricingNot given Team plan: $10/person/month with 14-day free trial, includes meeting recording, email and calendar enrichment, knowledge organized by topic, private scopes and projects, agent keys with custom permissions, import existing brain, and MCP for all agents. Enterprise plan: custom pricing for regulated a
Key features
  • Hierarchical traces capture every LLM call, tool invocation, and retrieval step
  • LLM-as-a-judge, heuristic functions, or human review evaluations
  • Prompt management with one-click deployments and rollbacks
  • Playground to test prompts on real production inputs and compare models
  • Experiments with test cases and side-by-side comparison
  • Human annotation and collaborative human-in-the-loop workflows
  • Cost and latency monitoring with dashboards and alerts
  • REST APIs and Query SDK for data access
  • Langfuse Assistant to automate the AI engineering loop
  • Records and transcribes meetings with visible participant
  • Automatically extracts facts from email and calendar
  • Scoped access control with automatic sorting
  • Private projects limited to members
  • Agent API keys with read-only or read-write permissions
  • Works with Claude, ChatGPT, Cursor, Codex over MCP
  • Import existing brain from markdown, Obsidian, or GBrain
  • Facts organized by topic with full history
  • Raw email stays private to owner, team sees extracted facts only
  • 180 days of email history imported on day one
What makes it different
  • MIT licensed open source platform with no data lock-in
  • Enterprise scale architecture handling billions of monthly events
  • Works with any language and framework with no framework lock-in
  • Async by default so tracing never blocks your application
  • Every fact is scoped automatically by sensitivity level and agents see only what their teammate can access
  • Agents can write back to the same brain over MCP, updating shared knowledge in real time
  • CASA Tier 2 security assessed and verified by Google for Gmail and Calendar access
  • Onboard entire team in under 5 minutes with one-click Google sign-in
  • Data never used to train AI models, privacy verified in policy
Free planNot given Not given
Open sourceNot given Not given
PlatformsNot given Not given
Public APINot given Not given
Community votes00
DR (Domain Rating by Ahrefs)80 +1 (up) since last check2 −1 (down) since last check
Trust Flow (Majestic)359
Citation Flow (Majestic)5426
Referring domains (Majestic)611432

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