Features

  • Monitors live LLM calls to catch failures, drift, toxic outputs and regressions
  • Automatically generates test sets and evals from sampled real-user traffic
  • Runs prompt experiments comparing prompts, models and strategies
  • Custom eval definitions, evaluation metrics and test case management
  • SDK and integrations for existing LLM applications

Pricing Details

💰 Pricing Model: Contact for enterprise pricing — publicly available pricing details are limited.  🆓 Free Plan Details: • Some trial access is offered (“free trial so you can explore Libretto’s features”).  • The extent of the free plan (limits, duration) is not clearly documented publicly. 💳 Paid Plan Details: • Paid / enterprise tier: more advanced monitoring, larger traffic volumes, deeper integrations, likely custom contracts. (Details not publicly broken down) • For production-use of LLMs, teams would typically move to a paid plan to cover scale, enterprise features, and SLA.