StepFun: Step 5 Preview
Stepfun
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...
Pricing
Source-reported prices are shown in their native units. No missing fee is estimated.
Input
$1.00
USD / 1M input tokens
Output
$2.70
USD / 1M output tokens
Capabilities
A check means the source explicitly lists support; a dash means the source did not publish a value.
Text input Supported
Text output Supported
Vision Supported
Tools Supported
Reasoning Supported
Structured outputs Supported
Audio Not listed
Image generation Not listed
Embeddings Not listed
Alternatives
Suggestions use deterministic rules: overlapping modalities, a context window within 2×, and shared source-reported signals. No AI-generated recommendations.
Similar models
Amazon: Nova 2 Lite
amazon/nova-2-lite-v1
Input
$0.300
Intelligence
13.4
Similar category, context, price or shared benchmark signals.
Meituan: LongCat 2.0
meituan/longcat-2.0
Input
$0.300
Intelligence
19.1
Similar category, context, price or shared benchmark signals.
MiniMax: MiniMax M1
minimax/minimax-m1
Input
$0.550
Intelligence
11.7
Similar category, context, price or shared benchmark signals.
Qwen: Qwen3.8 Max (0902)
qwen/qwen3.8-max-0902
Input
$2.00
Intelligence
45.4
Similar category, context, price or shared benchmark signals.
Higher-performance alternatives
Higher on at least one shared benchmark and never lower on the other shared benchmarks, with similar context.