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Accounting
FreeAgent
FreeAgent UK limited companies: first annual term £165 excluding VAT
50% OFF
£330.00£165.00
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SOFTWARE PROFILE
Langfuse
Tracing, prompt management and evaluations for AI applications
THE OVERVIEW
What is Langfuse?
Langfuse helps developers inspect and improve applications that use language models and AI agents. Teams instrument their application to collect traces covering model requests, responses, token usage, latency and intermediate tool or retrieval steps. Its prompt management keeps prompts centrally versioned so changes can be reviewed and deployed separately from application code. Evaluation workflows use production traces or prepared datasets to compare behavior and investigate regressions, with manual and automated scoring options. Engineers can use the hosted service or self-host the platform; these approaches have different operational responsibilities and plan limits. Cloud usage allowances and data-access periods depend on the selected plan, so the free tier should not be treated as unlimited production monitoring.
Trace AI applications, version prompts and evaluate model behavior with hosted or self-hosted Langfuse, subject to plan usage and retention limits.
AT A GLANCE
Capabilities and use cases
Application tracing
Inspect model requests, responses, token usage, latency and intermediate tool or retrieval steps to debug an AI application.
Model evaluation
Score live traces and prepared datasets with manual or automated evaluation workflows to compare application behavior and detect regressions.
Prompt management
Store, version and retrieve prompts centrally, allowing prompt changes to be reviewed separately from application deployments.
SOURCES & TRANSPARENCY
Official sources
We link to the original product source so you can verify current availability, pricing, and features.
Official product site describes cloud or self-hosted AI-agent tracing and evaluation, links documentation and cloud service, and references the product-owned apple-touch icon.officialOfficial documentation describes the API-first platform and integrated tracing, prompt versioning and evaluation workflows for developers.documentationThe tracing documentation describes logging prompts, model responses, token usage, latency and tool or retrieval steps.documentationOfficial prompt documentation describes central storage, versioning and retrieval, separating prompt updates from application code deployment.documentationThe official evaluation guide describes scoring production traces or predefined datasets using manual and automated evaluators and experiments.documentationOfficial cloud pricing lists free Hobby with 50k monthly units, two users and 30-day access, Core at $29/month and Pro at $199/month with usage charges and differing access periods.pricing
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