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Qwen3.8 Max Preview vs Step 5 Preview

Compare Qwen3.8 Max Preview from Qwen and Step 5 Preview from StepFun on key metrics including benchmarks, price, context length, and other model features. Access both models and hundreds of others through the AIHubMix API.

QwenQwen3.8 Max PreviewStepFunStep 5 Preview
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Qwen logo
Qwen3.8 Max Preview
Qwen · text, image, video → text

Qwen 3.8 Max Preview(Qwen3.8-Max-Preview) is the latest-generation foundation model in the Qwen family, packing 2.4T parameters and still evolving. Compared with the previous flagship Qwen 3.7 Max, it delivers major gains in core capabilities like Coding and Cowork (professional productivity), with world-leading performance on complex, long-horizon tasks such as full-stack development, data analysis, and Office workflows. Launch offer: Credits are consumed at just 20% of the standard rate, effectively 5× your usage. Limited time only.

Input$0.338 /M
Output$1.014 /M
Cache read$0.0338 /M
Details
StepFun logo
Step 5 Preview
StepFun · text, image, video → text

Step 5 Preview is StepFun's next-generation flagship base model designed for real-world tasks, with a focus on programming and professional expertise.

Input$1.08 /M
Output$3.0888 /M
Cache read$0.054 /M
Details

Pricing & Specifications

Prices are per million tokens. Time to First Token and throughput are rolling averages measured on AIHubMix.

Qwen3.8 Max Preview
Step 5 Preview
Input /M
$0.338
$1.08
Output /M
$1.014
$3.0888
Cache read /M
$0.0338
$0.054
Context length
1,000,000
256,000
Max output
131,072
0
Time to First Token
2.4 s
-
Throughput
48.1 tok/s
-
Modalities
textimagevideo
textimagevideo
Supported Parameters
toolsfunction callingstructured outputsweblong contextthinking
API Formats
Released
July 19, 2026
September 20, 2026

Promotional prices show the discounted rate; see each model page for promotion windows.

Activity Past 30 Days

Daily traffic served through AIHubMix — how demand for each model is trending.

qwen3.8-max-previewstep-5-preview

Tokens / day

-

Requests / day

-

Performance Past 3 Days

Measured on real AIHubMix traffic, hourly buckets. Gaps mean no traffic in that hour.

qwen3.8-max-previewstep-5-preview

Throughput (tok/s)

-

TTFT (s)

-

Uptime (%)

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Cost calculator

Estimate your monthly bill for the same workload on each model.

Qwen3.8 Max Preview
$35.49 /mo
Step 5 Preview
$111 /mo

Monthly = daily × 30. Discounted rates applied where a promotion is active.

FAQ

Which is cheaper: Qwen3.8 Max Preview, Step 5 Preview?

Qwen3.8 Max Preview: $1.014/M output tokens; Step 5 Preview: $3.0888/M. Use the cost calculator above to estimate your own workload.

How large is each context window?

Qwen3.8 Max Preview accepts 1,000,000 and Step 5 Preview accepts 256,000 input tokens.

What inputs and capabilities does each model support?

Qwen3.8 Max Preview accepts text, image and video input and supports tool calling, function calling, structured outputs, web search, long context and thinking; Step 5 Preview accepts text, image and video input.

Can I call Qwen3.8 Max Preview and Step 5 Preview with the same API key?

Yes. AIHubMix serves every model on this page behind one OpenAI-compatible endpoint, so switching between them is a one-line change to the model field — no second account, key or SDK.

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