Skip to main content

A toolkit for building composable interactive data driven applications.

Project description

Weave by Weights & Biases

Open in Colab Stable Version Download Stats Github Checks

Weave is a toolkit for developing Generative AI applications, built by Weights & Biases.

You can use Weave to:

  • Log and debug language model inputs, outputs, and traces
  • Build rigorous, apples-to-apples evaluations for language model use cases
  • Organize all the information generated across the LLM workflow, from experimentation to evaluations to production

Our goal is to bring rigor, best-practices, and composability to the inherently experimental process of developing Generative AI software, without introducing cognitive overhead.


Our documentation site can be found here


pip install weave



You can trace any function using weave.op() - from api calls to OpenAI, Anthropic, Google AI Studio etc to generation calls from Hugging Face and other open source models to any other validation functions or data transformations in your code you'd like to keep track of.

Decorate all the functions you want to trace, this will generate a trace tree of the inputs and outputs of all your functions:

import weave

def sum_nine(value_one: int):
    return value_one + 9

def multiply_two(value_two: int):
    return value_two * 2

def main():
    output = sum_nine(3)
    final_output = multiply_two(output)
    return final_output


Fuller Example

import weave
import json
from openai import OpenAI

def extract_fruit(sentence: str) -> dict:
    client = OpenAI()

    response =
            "role": "system",
            "content": "You will be provided with unstructured data, and your task is to parse it one JSON dictionary with fruit, color and flavor as keys."
            "role": "user",
            "content": sentence
        response_format={ "type": "json_object" }
    extracted = response.choices[0].message.content
    return json.loads(extracted)


sentence = "There are many fruits that were found on the recently discovered planet Goocrux. There are neoskizzles that grow there, which are purple and taste like candy."



Interested in pulling back the hood or contributing? Awesome, before you dive in, here's what you need to know.

We're in the process of 🧹 cleaning up 🧹. This codebase contains a large amount code for the "Weave engine" and "Weave boards", which we've put on pause as we focus on Tracing and Evaluations.

The Weave Tracing code is mostly in: weave/trace and weave/trace_server.

The Weave Evaluations code is mostly in weave/flow.

Project details

Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Source Distribution

weave-0.50.9.tar.gz (29.2 MB view hashes)

Uploaded Source

Built Distribution

weave-0.50.9-py3-none-any.whl (29.8 MB view hashes)

Uploaded Python 3

Supported by

AWS AWS Cloud computing and Security Sponsor Datadog Datadog Monitoring Fastly Fastly CDN Google Google Download Analytics Microsoft Microsoft PSF Sponsor Pingdom Pingdom Monitoring Sentry Sentry Error logging StatusPage StatusPage Status page