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PyLLMs

PyLLMs is a minimal Python library to connect to various Language Models (LLMs) with a built-in model performance benchmark.

Table of Contents

• Features
• Installation
• Quick Start
• Usage
  • Basic Usage
  • Multi-model Usage
  • Async Support
  • Streaming Support
  • Chat History and System Message
  • Other Methods
• Configuration
• Model Benchmarks
• Supported Models
• Advanced Usage
  • Using OpenAI API on Azure
  • Using Google Vertex LLM models
  • Using Local Ollama LLM models
• Contributing
• License

Features

• Connect to top LLMs in a few lines of code
• Response meta includes tokens processed, cost, and latency standardized across models
• Multi-model support: Get completions from different models simultaneously
• LLM benchmark: Evaluate models on quality, speed, and cost
• Async and streaming support for compatible models

Installation

Install the package using pip:

pip install pyllms

Quick Start

import llms

model = llms.init('gpt-4o')
result = model.complete("What is 5+5?")

print(result.text)

Usage

Basic Usage

import llms

model = llms.init('gpt-4o')
result = model.complete(
    "What is the capital of the country where Mozart was born?",
    temperature=0.1,
    max_tokens=200
)

print(result.text)
print(result.meta)

Multi-model Usage

models = llms.init(model=['gpt-3.5-turbo', 'claude-instant-v1'])
result = models.complete('What is the capital of the country where Mozart was born?')

print(result.text)
print(result.meta)

Async Support

result = await model.acomplete("What is the capital of the country where Mozart was born?")

Streaming Support

model = llms.init('claude-v1')
result = model.complete_stream("Write an essay on the Civil War")
for chunk in result.stream:
   if chunk is not None:
      print(chunk, end='')

Chat History and System Message

history = []
history.append({"role": "user", "content": user_input})
history.append({"role": "assistant", "content": result.text})

model.complete(prompt=prompt, history=history)

# For OpenAI chat models
model.complete(prompt=prompt, system_message=system, history=history)

Other Methods

count = model.count_tokens('The quick brown fox jumped over the lazy dog')

Configuration

PyLLMs will attempt to read API keys and the default model from environment variables. You can set them like this:

export OPENAI_API_KEY="your_api_key_here"
export ANTHROPIC_API_KEY="your_api_key_here"
export AI21_API_KEY="your_api_key_here"
export COHERE_API_KEY="your_api_key_here"
export ALEPHALPHA_API_KEY="your_api_key_here"
export HUGGINFACEHUB_API_KEY="your_api_key_here"
export GOOGLE_API_KEY="your_api_key_here"
export MISTRAL_API_KEY="your_api_key_here"
export REKA_API_KEY="your_api_key_here"
export TOGETHER_API_KEY="your_api_key_here"
export GROQ_API_KEY="your_api_key_here"
export DEEPSEEK_API_KEY="your_api_key_here"

export LLMS_DEFAULT_MODEL="gpt-3.5-turbo"

Alternatively, you can pass initialization values to the init() method:

model = llms.init(openai_api_key='your_api_key_here', model='gpt-4')

Model Benchmarks

PyLLMs includes an automated benchmark system. The quality of models is evaluated using a powerful model (e.g., GPT-4) on a range of predefined questions, or you can supply your own.

model = llms.init(model=['claude-3-haiku-20240307', 'gpt-4o-mini', 'claude-3-5-sonnet-20240620', 'gpt-4o', 'mistral-large-latest', 'open-mistral-nemo', 'gpt-4', 'gpt-3.5-turbo', 'deepseek-coder', 'deepseek-chat', 'llama-3.1-8b-instant', 'llama-3.1-70b-versatile'])

gpt4 = llms.init('gpt-4o')

models.benchmark(evaluator=gpt4)

Check Kagi LLM Benchmarking Project for the latest benchmarks!

To evaluate models on your own prompts:

models.benchmark(prompts=[("What is the capital of Finland?", "Helsinki")], evaluator=gpt4)

Supported Models

To get a full list of supported models:

model = llms.init()
model.list() # list all models

model.list("gpt")  # lists only models with 'gpt' in name/provider name

Currently supported models (may be outdated):

Advanced Usage

Using OpenAI API on Azure

import llms
AZURE_API_BASE = "{insert here}"
AZURE_API_KEY = "{insert here}"

model = llms.init('gpt-4')

azure_args = {
    "engine": "gpt-4",  # Azure deployment_id
    "api_base": AZURE_API_BASE,
    "api_type": "azure",
    "api_version": "2023-05-15",
    "api_key": AZURE_API_KEY,
}

azure_result = model.complete("What is 5+5?", **azure_args)

Using Google Vertex LLM models

1. Set up a GCP account and create a project
2. Enable Vertex AI APIs in your GCP project
3. Install gcloud CLI tool
4. Set up Application Default Credentials

Then:

model = llms.init('chat-bison')
result = model.complete("Hello!")

Using Local Ollama LLM models

1. Ensure Ollama is running and you've pulled the desired model
2. Get the name of the LLM you want to use
3. Initialize PyLLMs:

model = llms.init("tinyllama:latest")
result = model.complete("Hello!")

Contributing

Contributions are welcome! Please feel free to submit a Pull Request.

License

This project is licensed under the MIT License. See the LICENSE file for details.