braintrust 0.42.0


pip install braintrust

  Latest version

Released: Sep 22, 2026
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Author: Braintrust
Requires Python: >=3.10.0
Classifiers

Programming Language
  • Python :: 3
  • Python :: 3.10

Operating System
  • OS Independent

Braintrust Python SDK

PyPI version

The official Python SDK for logging, tracing, and evaluating AI applications with Braintrust.

Installation

Install the SDK:

pip install braintrust

Quickstart

Run a simple evaluation:

from braintrust import Eval


def is_equal(expected, output):
    return expected == output


Eval(
    "Say Hi Bot",
    data=lambda: [
        {"input": "Foo", "expected": "Hi Foo"},
        {"input": "Bar", "expected": "Hello Bar"},
    ],
    task=lambda input: "Hi " + input,
    scores=[is_equal],
)

Then run:

BRAINTRUST_API_KEY=<YOUR_API_KEY> braintrust eval tutorial_eval.py

Optional Extras

Install extras as needed for specific workflows:

pip install "braintrust[cli]"
pip install "braintrust[openai-agents]"
pip install "braintrust[otel]"
pip install "braintrust[temporal]"
pip install "braintrust[all]"

Available extras:

  • performance: installs orjson for faster JSON serialization
  • cli: installs optional dependencies used by the Braintrust CLI
  • openai-agents: installs OpenAI Agents integration support
  • otel: installs OpenTelemetry integration dependencies
  • temporal: installs Temporal integration dependencies
  • all: installs all optional extras

Documentation

License

Apache-2.0

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Wheel compatibility matrix

Platform Python 3
any

Files in release

Extras:
Dependencies:
requests
chevron
tqdm
exceptiongroup (>=1.2.0)
jsonschema
packaging
sseclient-py
python-slugify
typing_extensions (>=4.1.0)
wrapt