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Prediction Guard

This page covers how to use the Prediction Guard ecosystem within LangChain. It is broken into two parts: installation and setup, and then references to specific Prediction Guard wrappers.

Installation and Setup​

  • Install the Python SDK with pip install predictionguard
  • Get a Prediction Guard access token (as described here) and set it as an environment variable (PREDICTIONGUARD_TOKEN)

LLM Wrapper​

There exists a Prediction Guard LLM wrapper, which you can access with

from langchain_community.llms import PredictionGuard
API Reference:PredictionGuard

You can provide the name of the Prediction Guard model as an argument when initializing the LLM:

pgllm = PredictionGuard(model="MPT-7B-Instruct")

You can also provide your access token directly as an argument:

pgllm = PredictionGuard(model="MPT-7B-Instruct", token="<your access token>")

Finally, you can provide an "output" argument that is used to structure/ control the output of the LLM:

pgllm = PredictionGuard(model="MPT-7B-Instruct", output={"type": "boolean"})

Example usage​

Basic usage of the controlled or guarded LLM wrapper:

import os

import predictionguard as pg
from langchain_community.llms import PredictionGuard
from langchain_core.prompts import PromptTemplate
from langchain.chains import LLMChain

# Your Prediction Guard API key. Get one at predictionguard.com
os.environ["PREDICTIONGUARD_TOKEN"] = "<your Prediction Guard access token>"

# Define a prompt template
template = """Respond to the following query based on the context.

Context: EVERY comment, DM + email suggestion has led us to this EXCITING announcement! πŸŽ‰ We have officially added TWO new candle subscription box options! πŸ“¦
Exclusive Candle Box - $80
Monthly Candle Box - $45 (NEW!)
Scent of The Month Box - $28 (NEW!)
Head to stories to get ALL the deets on each box! πŸ‘† BONUS: Save 50% on your first box with code 50OFF! πŸŽ‰

Query: {query}

Result: """
prompt = PromptTemplate.from_template(template)

# With "guarding" or controlling the output of the LLM. See the
# Prediction Guard docs (https://docs.predictionguard.com) to learn how to
# control the output with integer, float, boolean, JSON, and other types and
# structures.
pgllm = PredictionGuard(model="MPT-7B-Instruct",
output={
"type": "categorical",
"categories": [
"product announcement",
"apology",
"relational"
]
})
pgllm(prompt.format(query="What kind of post is this?"))

Basic LLM Chaining with the Prediction Guard wrapper:

import os

from langchain_core.prompts import PromptTemplate
from langchain.chains import LLMChain
from langchain_community.llms import PredictionGuard

# Optional, add your OpenAI API Key. This is optional, as Prediction Guard allows
# you to access all the latest open access models (see https://docs.predictionguard.com)
os.environ["OPENAI_API_KEY"] = "<your OpenAI api key>"

# Your Prediction Guard API key. Get one at predictionguard.com
os.environ["PREDICTIONGUARD_TOKEN"] = "<your Prediction Guard access token>"

pgllm = PredictionGuard(model="OpenAI-gpt-3.5-turbo-instruct")

template = """Question: {question}

Answer: Let's think step by step."""
prompt = PromptTemplate.from_template(template)
llm_chain = LLMChain(prompt=prompt, llm=pgllm, verbose=True)

question = "What NFL team won the Super Bowl in the year Justin Beiber was born?"

llm_chain.predict(question=question)

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