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Qwen3 VL Plus vs Step 3.7 Flash

Compare Qwen3 VL Plus from Qwen and Step 3.7 Flash 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 VL PlusStepFunStep 3.7 Flash
+ Add model · 2/4
Qwen logo
Qwen3 VL Plus
Qwen · text, image, video → text

The Qwen3 series visual understanding model achieves an effective fusion of thinking and non-thinking modes. Its visual agent capabilities reach world-class levels on public test sets such as OS World. This version features comprehensive upgrades in visual coding, spatial perception, and multimodal reasoning; visual perception and recognition abilities are greatly enhanced, supporting ultra-long video understanding.

Input$0.137 /M
Output$1.37 /M
Cache read$0.0274 /M
Details
StepFun logo
Step 3.7 Flash
StepFun · text, image, video → text

step-3.7-flash is stepfun's flagship inference model, designed for high-complexity tasks that require deep reasoning and fast execution. It excels at decomposing multi-step problems, performing tool calls, and maintaining consistency across massive datasets. It is the preferred choice for complex workloads such as long-context agents, advanced software engineering, and end-to-end research automation.

Input$0.22 /M
Output$1.32 /M
Cache read$0.044 /M
Details

Pricing & Specifications

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

Qwen3 VL Plus
Step 3.7 Flash
Input /M
$0.137
$0.22
Output /M
$1.37
$1.32
Cache read /M
$0.0274
$0.044
Context length
262,144
256,000
Max output
32,768
0
Time to First Token
1.0 s
1.4 s
Throughput
9.8 tok/s
32.6 tok/s
Modalities
textimagevideo
textimagevideo
Supported Parameters
toolsfunction callingstructured outputs
API Formats
Released
September 23, 2025
May 29, 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-vl-plusstep-3.7-flash

Tokens / day

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Requests / day

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Performance Past 3 Days

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

qwen3-vl-plusstep-3.7-flash

Throughput (tok/s)

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TTFT (s)

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Uptime (%)

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Cost calculator

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

Qwen3 VL Plus
$28.77 /mo
Step 3.7 Flash
$33.00 /mo

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

FAQ

Which is cheaper: Qwen3 VL Plus, Step 3.7 Flash?

Step 3.7 Flash: $1.32/M output tokens; Qwen3 VL Plus: $1.37/M. Use the cost calculator above to estimate your own workload.

Which responds faster?

Qwen3 VL Plus: 1.0s time to first token measured on AIHubMix; see the live performance charts above for how each model behaves across the day.

How large is each context window?

Qwen3 VL Plus accepts 262,144 and Step 3.7 Flash accepts 256,000 input tokens.

Which one generates tokens faster?

Step 3.7 Flash at 32.6 tok/s and Qwen3 VL Plus at 9.8 tok/s, measured as output throughput on AIHubMix — a separate metric from time to first token.

What inputs and capabilities does each model support?

Qwen3 VL Plus accepts text, image and video input and supports tool calling, function calling and structured outputs; Step 3.7 Flash accepts text, image and video input.

Can I call Qwen3 VL Plus and Step 3.7 Flash 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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