Billable Units

Langfuse pricing is based on the number of ingested units per billing period. Units are either traces, observations or scores.

Units = Count of Traces + Count of Observations + Count of Scores

Langfuse Cloud

For Langfuse Cloud, you can use our pricing calculator to estimate your monthly costs based on your expected usage.

Self-hosted (OSS/Enterprise)

Self-hosted Langfuse (OSS) is free under the MIT license, so there is no usage-based billing. For self-hosted Langfuse Enterprise, billable units are one component of the pricing.

The unit definition above is still useful when you want to quantify your data volume, for example to estimate the cost of moving to Langfuse Cloud or to size a self-hosted deployment.

You can read your unit counts directly from the built-in Langfuse Usage Management dashboard, one of Langfuse's curated dashboards (see Custom Dashboards).

Open the dashboard

In your Langfuse project, go to Dashboards and open Langfuse Usage Management.

Select the last 30 days

Set the date range to the last 30 days to capture a month of usage.

Sum the counts

Add the count widgets together to get your monthly units:

• Total Trace Count
• Total Observation Count
• Total Score Count (add the numeric and categorical widgets)

For the example above:

Units = 20,070 Traces + 119,500 Observations + 561 Scores = 140,131 units / month (≈ 1,681,572 units / year)

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