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Modal vs Langfuse

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

Modal compared with Langfuse
DetailModalLangfuse
What it doesThe platform for production AI Open Source Agent Evals & Observability
StageNot given Established
FoundedNot given Not given
Based inUS DE
Pricing modelusage-based freemium
PricingStarter plan is free with $30/month compute credits. Team plan is $250/month plus compute. Enterprise plan is custom. Compute is billed per second for CPU, GPU, and memory with no charges for idle time. Not given
Key features
  • Serve LLMs, image, video, and audio models
  • Isolated environments for coding agents and RL rollouts
  • Fine-tune and train models on GPUs
  • Autoscale compute from zero to thousands of GPUs
  • Distributed storage for models and weights
  • Global capacity across 20+ clouds
  • Serverless functions with HTTPS endpoints
  • Out-of-the-box observability and logs
  • 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
What makes it different
  • Custom infrastructure built for AI including container runtime, storage, and scheduler
  • Sub-second container startup times for GPU workloads
  • Pay only by the second with no idle charges
  • Programmatically create millions of concurrent sandboxes
  • 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
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 no change since last check79 no change since last check
Trust Flow (Majestic)3335
Citation Flow (Majestic)5354
Referring domains (Majestic)61746114

5 details filled in for both companies.

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