Criterion Hugging Face Langfuse
CategoryMachine Learning & Deep LearningMachine Learning & Deep Learning
In one sentenceHub for sharing open models, datasets and demo apps, with paid compute for inference and hosting.Open-source tracing, prompt management and evaluation for LLM applications, self-hosted or in the cloud.
Problem it solvesFinding, sharing and running open models without building your own model registry and infrastructure.Understanding and improving LLM app behaviour, cost and quality in production.
Free planYesYes
Developer APIYes — docsYes — docs
Open sourceNoYes
PlatformsWeb, Python and JavaScript libraries, REST APIWeb (cloud), Docker, Kubernetes, Python SDK, JS/TS SDK
Pricing (summary)The hub is free to use. PRO costs $9/month with $2 monthly compute credits, Team is $20/user/month and Enterprise $50/user/month. Compute is billed separately: Spaces GPUs and Inference Endpoints hourly, Inference Providers at provider rates.
Checked 2026-10-19
Self-hosting the open-source core is free. Langfuse Cloud: Hobby free (50k units/month), Core $29/month, Pro $199/month and Enterprise $2,499/month, each with 100k units included and graduated overage from $8 per 100k units.
Checked 2026-10-19
Strengths
  • Huge open ecosystem
  • Free tier for hosting and sharing
  • Flexible compute options
  • Open source with full self-hosting
  • Broad integrations
  • Transparent usage pricing
Limitations
  • Free users get no included Inference Providers credits
  • Costs spread across storage, Spaces and endpoints can be hard to track
  • Model licences vary per repository and must be checked
  • Enterprise (ee) features are outside the MIT licence
  • Hobby plan limited to 2 users and 30-day data access
  • Self-hosting requires infrastructure work