Step 5 Preview
Model Information
| Slug | step5preview |
|---|---|
| LLMs.txt | View |
| Release Date | September 16, 2026 |
Organization
| Name | StepFun |
|---|---|
| Website | https://platform.stepfun.ai |
Model Description
Step 5 Preview is StepFun's flagship model for agentic work, built on a sparse Mixture-of-Experts architecture (27B active / 600B total parameters). It performs strongly in software engineering and professional knowledge work, with particular strength in finance.
It is designed for extended tasks that span large codebases and documents, using tools and refining results over multiple steps.
It is designed for extended tasks that span large codebases and documents, using tools and refining results over multiple steps.
Available at 42 Providers
| Provider | Type | Model Name | Original Model | Input ($/1M) | Output ($/1M) | Free | Actions | |
|---|---|---|---|---|---|---|---|---|
|
Nvidia |
Step 5 Preview
|
stepfun-ai/Step 5 Preview
|
$0.00 | $0.00 | |||
|
TokenReply |
Chat
Code
|
step-5-preview
|
step-5-preview
|
$0.00 | $0.00 | ||
|
KiosAPI |
|
step-5-preview
|
step-5-preview
|
$0.00 | $0.00 | ||
|
Smouter |
Step 5 Preview
|
step-5-preview
|
$0.50 | $1.35 | |||
|
Routstr |
P2P
|
StepFun: Step 5 Preview
|
step-5-preview
|
$0.90 | $2.43 | ||
|
Fireworks AI |
Step 5 Preview
|
step-5-preview-fp8
|
$0.90 | $0.90 | |||
|
Vercel AI Gateway |
Step 5 Preview
|
stepfun/step-5-preview
|
$1.00 | $2.70 | |||
|
Nano-GPT |
Chat
Code
|
Step 5 Preview
|
stepfun/step-5-preview
|
$1.00 | $2.70 | ||
|
EmpirioLabs AI |
Step 5 Preview
|
step-5-preview
|
$1.00 | $2.70 | |||
|
CommandCode AI |
Step 5 Preview
|
stepfun/Step-5-Preview
|
$1.00 | $2.70 | |||
|
Cline |
Code
|
StepFun: Step 5 Preview
|
stepfun/step-5-preview
|
$1.00 | $2.70 | ||
|
Glama |
step-5-preview
|
stepfun/step-5-preview
|
$1.00 | $2.70 | |||
|
Kilo Code |
Code
|
Step 5 Preview
|
stepfun/step-5-preview
|
$1.00 | $2.70 | ||
|
Nous Research |
StepFun: Step 5 Preview
|
stepfun/step-5-preview
|
$1.00 | $2.70 | |||
|
OpenRouter |
Chat
Code
|
Step 5 Preview
|
stepfun/step-5-preview
|
$1.00 | $2.70 | ||
|
UsePod |
P2P
|
step-5-preview
|
step-5-preview
|
$1.00 | $2.70 | ||
|
ValorGPT |
ST
|
stepfun-step-5-preview
|
$1.00 | $2.70 | |||
|
Infron |
|
StepFun: Step 5 Preview
|
stepfun/step-5-preview
|
$1.00 | $2.70 | ||
|
haimaker.ai |
step-5-preview
|
stepfun/step-5-preview
|
$1.00 | $2.70 | |||
|
Novita AI |
Step 5 Preview
|
stepfun/step-5-preview
|
$1.00 | $2.70 | |||
|
Eden AI |
Step 5 Preview (Deep Infra)
|
deepinfra/stepfun-ai/Step-5-Preview
|
$1.00 | $2.70 | |||
|
OpenCode Go |
Chat
Code
|
Step 5 Preview
|
step-5-preview
|
$1.00 | $2.70 | ||
|
Requesty |
deepinfra/step-5-preview
|
$1.00 | $2.70 | ||||
|
GMI Cloud |
StepFun: Step-5-Preview
|
stepfun-ai/Step-5-Preview
|
$1.00 | $2.70 | |||
|
WaveSpeed AI |
Chat
Code
|
step-5-preview
|
stepfun/step-5-preview
|
$1.00 | $2.70 | ||
|
|
Eden AI |
Step 5 Preview (Tencent)
|
tencent/step-5-preview
|
$1.00 | $2.70 | |||
|
|
Novita AI |
Step 5 Preview
|
Step 5 Preview
|
$1.00 | $2.70 | |||
|
LLM Gateway |
Step 5 Preview (Tencent Cloud)
|
tencent/step-5-preview
|
$1.00 | $2.70 | |||
|
LLM Gateway |
Chat
|
Step 5 Preview
|
step-5-preview
|
$1.00 | $2.70 | ||
|
ZenMUX |
Chat
Code
|
StepFun: Step 5 Preview
|
stepfun/step-5-preview
|
$1.05 | $3.00 | ||
|
AIMLAPI |
Step 5 Preview
|
stepfun/step-5-preview
|
$1.06 | $2.86 | |||
|
AIHubMix |
Chat
Code
|
step-5-preview
|
step-5-preview
|
$1.08 | $3.09 | ||
|
0G |
Step 5 Preview
|
step-5-preview
|
$1.46 | $4.17 | |||
|
StepFun |
step-5-preview
|
- | - | ||||
|
StepFun Step Plan (China) |
Step 5 Preview
|
step-5-preview
|
- | - | |||
|
Arena AI |
Chat
|
step-5-preview
|
- | - | |||
|
StepFun Step Plan (Global) |
Step 5 Preview
|
step-5-preview
|
- | - | |||
|
Krater |
StepFun: Step 5 Preview
|
step-5-preview
|
- | - | |||
|
Writingmate |
Chat
Code
|
StepFun: Step 5 Preview
|
stepfun/step-5-preview
|
- | - | ||
|
Featherless |
stepfun-ai/Step-5-Preview
|
stepfun-ai/Step-5-Preview
|
- | - | |||
|
Naga |
Step 5 Preview
|
step-5-preview
|
- | - | |||
|
Airforce API |
step-5-preview
|
step-5-preview
|
- | - |