LlamaIndex Llms Integration: Fireworks

Installation

Install the required Python packages:

bash

%pip install llama-index-llms-fireworks
%pip install llama-index

Set the Fireworks API key as an environment variable or pass it directly to the class constructor.

Usage

Basic Completion

To generate a simple completion, use the complete method:

python

from llama_index.llms.fireworks import Fireworks

resp = Fireworks().complete("Paul Graham is ")
print(resp)

Example output:

Paul Graham is a well-known essayist, programmer, and startup entrepreneur. He co-founded Y Combinator, which supported startups like Dropbox, Airbnb, and Reddit.

Basic Chat

To simulate a chat with multiple messages:

python

from llama_index.core.llms import ChatMessage
from llama_index.llms.fireworks import Fireworks

messages = [
    ChatMessage(
        role="system", content="You are a pirate with a colorful personality"
    ),
    ChatMessage(role="user", content="What is your name"),
]
resp = Fireworks().chat(messages)
print(resp)

Example output:

Arr matey, ye be askin' for me name? Well, I be known as Captain Redbeard the Terrible!

Streaming Completion

To stream a response in real-time using stream_complete:

python

from llama_index.llms.fireworks import Fireworks

llm = Fireworks()
resp = llm.stream_complete("Paul Graham is ")

for r in resp:
    print(r.delta, end="")

Example output (partial):

Paul Graham is a well-known essayist, programmer, and venture capitalist...

Streaming Chat

For a streamed conversation, use stream_chat:

python

from llama_index.llms.fireworks import Fireworks
from llama_index.core.llms import ChatMessage

llm = Fireworks()
messages = [
    ChatMessage(
        role="system", content="You are a pirate with a colorful personality"
    ),
    ChatMessage(role="user", content="What is your name"),
]
resp = llm.stream_chat(messages)

for r in resp:
    print(r.delta, end="")

Example output (partial):

Arr matey, ye be askin' for me name? Well, I be known as Captain Redbeard the Terrible...

Model Configuration

To configure the model for more specific behavior:

python

from llama_index.llms.fireworks import Fireworks

llm = Fireworks(model="accounts/fireworks/models/kimi-k2-instruct-0905")
resp = llm.complete("Paul Graham is ")
print(resp)

Example output:

Paul Graham is an English-American computer scientist, entrepreneur, venture capitalist, and blogger.

For a full list of models, check the Fireworks website.

API Key Configuration

To use separate API keys for different instances:

python

from llama_index.llms.fireworks import Fireworks

llm = Fireworks(
    model="accounts/fireworks/models/kimi-k2-instruct-0905",
    api_key="YOUR_API_KEY",
)
resp = llm.complete("Paul Graham is ")
print(resp)

LLM Implementation example

https://docs.llamaindex.ai/en/stable/examples/llm/fireworks/