# New Model Available: Step 5 Preview

> Source: <https://zenmux.ai/stepfun/step-5-preview>
> Published: 2026-09-20 07:38:11+00:00

Step 5 Preview is StepFun's next-generation flagship foundation model for real-world tasks, with a focus on coding and professional knowledge work. It natively supports text, image, and video input, offers a 1M-token context window, and is well suited for workflows that require processing large amounts of information, using tools, and driving tasks through to deliverable results.

[Back to Models](https://zenmux.ai/models)

## Providers

Route requests across multiple providers. Copy a provider slug to set your preference.

*Read:*

**-**/ M tokens

*Write:*

**-**/ M tokens1M2.43s33.8tps

## Uptime

24hours
Direct request success rate on AI Gateway and per-provider.

## Throughput

24hours
P50 throughput on live AI Gateway traffic, in tokens per second (TPS).

## Latency

24hours
P50 time to first token (TTFT) on live AI Gateway traffic, in milliseconds.

## Activity

Token volume and request traffic to this model over time.

## Benchmarks

Scores on standardized evaluations. Higher percentages are better — and rank percentile shows

Metrics sourced from[Artificial Analysis](https://artificialanalysis.ai/)

## Apps

Public apps that send the most traffic to this model. Good signal for what real production workloads look like — and a hint at which use cases this model is best suited for. [View All](https://zenmux.ai/analytics/apps)

## Related Models

More models from [StepFun](https://zenmux.ai/stepfun)