Step 5 Preview

step-5-preview

A next-generation flagship base model for coding and professional knowledge work.

Step 5 Preview is StepFun's next flagship base model for real tasks, and it is listed on Step Plan. It accepts text, image, and video input, with a 1M token context window (verified 2026-10-20).

1M context1M context

Released2026-09-16

Relays5 sites

multimodallong contextreasoningtool use

Model information

Model ID: step-5-preview
Context: 1M
Max input: 1M
Max output: 1M
Knowledge cutoff: -
Open weights: Supported
License: -
Release date: 2026-09-16

Input

Text: SupportedImage: SupportedAudio: Not supportedVideo: SupportedPDF: Not supportedFile: Supported

Output

Text: SupportedImage: Not supportedAudio: Not supportedVideo: Not supported

API capabilities

Reasoning: SupportedTool call: SupportedStructured output: UnknownTemperature: Supported

StepFun (China) Official Pricing

CNY

Updated: 2026-10-21T14:13:05.701+08:00

Input

~¥6.686/ 1M tokens

Output

~¥18.052/ 1M tokens

Cache read

~¥0.6686/ 1M tokens

Relay Comparison

Compare token, per-request, or per-second pricing by relay channel.

Unit: token prices are ¥ / 1M tokens; per-request and per-second rows use their shown unit

天天中转站

https://apitiantian.comToken billing

Price range ¥1 / 1M tokens

Channel	Billing	Input	Output	Cache hit	Cache write
国模2折福利	Token	¥1	¥2.71	¥0.1	¥0
国模福利-chat端点	Token	¥1	¥2.71	¥0.1	¥0
国模福利-messages端点	Token	¥1	¥2.71	¥0.1	¥0

OmniaKey

omniakey.comToken billing

Price range ¥1.05 / 1M tokens

Channel	Billing	Input	Output	Cache hit	Cache write
default	Token	¥1.05	¥2.83	¥0.054	¥0.009

ClaudeCN

claudecn.topToken billing

Price range ¥7 / 1M tokens

Channel	Billing	Input	Output	Cache hit	Cache write
国产模型	Token	¥7	¥20	¥0.7	¥8.75

A6api

a6api.comToken billing

Price range ¥0.0512 / 1M tokens

Channel	Billing	Input	Output	Cache hit	Cache write
marketplace	Token	¥0.0512	¥0.1382	¥0.0026	¥0.0001

xem中转站

ai.xem8k5.topToken billing

Price range ¥0.455 / 1M tokens

Channel	Billing	Input	Output	Cache hit	Cache write
国模	Token	¥0.455	¥1.3	¥0.0455	-

How should Step 5 Preview relay pricing be compared?

This Step 5 Preview pricing page compares official pricing with public prices from 5 listed AI gateways. Token prices are shown in CNY per 1M tokens, while per-request, per-second, and per-character rows use the unit shown in the table. Last updated: 11/08/2026, 08:14.

Data sources: Public price catalogs, official pricing records, and monitoring results.
Metric definitions: Uptime means successful probe response rate, fake-rate signals possible model mismatch or abnormal output risk, and latency is average API response time.
Risk note: Relay gateways are third-party services. Pricing, billing, privacy, and stability can change; start with a small top-up and verify reliability before continued use.