ExperimentRunStats

class langsmith.schemas.ExperimentRunStats

Run statistics for an experiment.

run_count: int | None

The number of runs in the project.

latency_p50: timedelta | None

The median (50th percentile) latency for the project.

latency_p99: timedelta | None

The 99th percentile latency for the project.

total_tokens: int | None

The total number of tokens consumed in the project.

prompt_tokens: int | None

The total number of prompt tokens consumed in the project.

completion_tokens: int | None

The total number of completion tokens consumed in the project.

last_run_start_time: datetime | None

The start time of the last run in the project.

run_facets: list[dict[str, Any]] | None

Facets for the runs in the project.

total_cost: Decimal | None

The total estimated LLM cost associated with the completion tokens.

prompt_cost: Decimal | None

The estimated cost associated with the prompt (input) tokens.

completion_cost: Decimal | None

The estimated cost associated with the completion tokens.

first_token_p50: timedelta | None

The median (50th percentile) time to process the first token.

first_token_p99: timedelta | None

The 99th percentile time to process the first token.

error_rate: float | None

The error rate for the project.