LlamaIndex LLM Integration: Stepfun

Installation

To install the required packages, run:

%pip install llama-index-llms-stepfun
!pip install llama-index

Setup

Initialize StepFun LLM

First, import the necessary libraries and set up your StepFun instance. Replace step-1v-8k, and TOKEN with your model name, and API key, respectively:

import os
from typing import List, Optional
from llama_index.llms.stepfun import StepFun
from llama_index.core.llms import ChatMessage

llm = StepFun(
    api_key="TOKEN",
    max_tokens=256,
    context_window=4096,
    model="step-1v-8k",
)

Chat Functionality

StepFun supports chat APIs, allowing you to handle conversation-like interactions. Here’s how to use it:

from llama_index.llms.stepfun import StepFun
from llama_index.core.llms import ChatMessage

llm = StepFun(
    api_key="",
    max_tokens=256,
    context_window=4096,
    model="step-1v-8k",
)


message = ChatMessage(role="user", content="Tell me a joke")
resp = llm.chat([message])
print(resp)

Download files

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

Source Distribution

llama_index_llms_stepfun-1.3.1.tar.gz (4.3 kB view details)

Uploaded Aug 31, 2026 Source

Built Distribution

If you're not sure about the file name format, learn more about wheel file names.

The dropdown lists show the available interpreters, ABIs, and platforms. Enable javascript to be able to filter the list of wheel files.

llama_index_llms_stepfun-1.3.1-py3-none-any.whl (3.9 kB view details)

Uploaded Aug 31, 2026 Python 3

File details

Details for the file llama_index_llms_stepfun-1.3.1.tar.gz.

File metadata

Download URL: llama_index_llms_stepfun-1.3.1.tar.gz
Upload date: Aug 31, 2026
Size: 4.3 kB
Tags: Source
Uploaded using Trusted Publishing? No
Uploaded via: uv/0.12.7 {"installer":{"name":"uv","version":"0.12.7","subcommand":["publish"]},"python":null,"implementation":{"name":null,"version":null},"distro":{"name":"Ubuntu","version":"24.04","id":"noble","libc":null},"system":{"name":null,"release":null},"cpu":null,"openssl_version":null,"setuptools_version":null,"rustc_version":null,"ci":true}

File hashes

Hashes for llama_index_llms_stepfun-1.3.1.tar.gz
Algorithm	Hash digest
SHA256	`b9b20b69874d75387aa493b683c132ab5bc19330dafe74ad23ff9ef751c4eac1`
MD5	`b92e02ff0e5a2eaadfbe8fe99c7e3fce`
BLAKE2b-256	`c03f7124a7b4cd349ec3bff0042423646d67d3195d6ce42440f39b29734348d9`

See more details on using hashes here.

File details

Details for the file llama_index_llms_stepfun-1.3.1-py3-none-any.whl.

File metadata

Download URL: llama_index_llms_stepfun-1.3.1-py3-none-any.whl
Upload date: Aug 31, 2026
Size: 3.9 kB
Tags: Python 3
Uploaded using Trusted Publishing? No
Uploaded via: uv/0.12.7 {"installer":{"name":"uv","version":"0.12.7","subcommand":["publish"]},"python":null,"implementation":{"name":null,"version":null},"distro":{"name":"Ubuntu","version":"24.04","id":"noble","libc":null},"system":{"name":null,"release":null},"cpu":null,"openssl_version":null,"setuptools_version":null,"rustc_version":null,"ci":true}

File hashes

Hashes for llama_index_llms_stepfun-1.3.1-py3-none-any.whl
Algorithm	Hash digest
SHA256	`1320477306117f1f8ccd77545722a23ea7bddd94a6032f47acd94b5e636ccab1`
MD5	`57bd0dc3450977ddc91e4c76b747b50a`
BLAKE2b-256	`477f1d6962da6f50fcc3ebdbfb457789597a50779c0a2c3e7a0538f291f0c55e`