Models

AIHubMix Phi 4 Mini (reasoning) vs Step 3.7 Flash

Compare AIHubMix Phi 4 Mini (reasoning) from Microsoft 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.

MicrosoftAIHubMix Phi 4 Mini (reasoning)StepFunStep 3.7 Flash
Microsoft logo
AIHubMix Phi 4 Mini (reasoning)
Microsoft · text → text

Phi-4-mini-reasoning is a lightweight open model designed for advanced mathematical reasoning and logic-intensive problem-solving. It is particularly well-suited for tasks such as formal proofs, symbolic computation, and solving multi-step word problems. With its efficient architecture, the model balances high-quality reasoning performance with cost-effective deployment, making it ideal for educational applications, embedded tutoring, and lightweight edge or mobile systems. Phi-4-mini-reasoning supports a 128K token context length, enabling it to process and reason over long mathematical problems and proofs. Built on synthetic and high-quality math datasets, the model leverages advanced fine-tuning techniques such as supervised fine-tuning and preference modeling to enhance reasoning capabilities. Its training incorporates safety and alignment protocols, ensuring robust and reliable performance across supported use cases.

Input$0.12 /M
Output$0.12 /M
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

Pricing & Specifications

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

AIHubMix Phi 4 Mini (reasoning)
Step 3.7 Flash
Input /M
$0.12
$0.22
Output /M
$0.12
$1.32
Cache read /M
-
$0.044
Context length
128,000
256,000
Max output
4,000
0
Time to First Token
-
1.4 s
Throughput
-
32.6 tok/s
Modalities
text
textimagevideo
Supported Parameters
API Formats
Released
-
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.

AiHubmix-Phi-4-mini-reasoningstep-3.7-flash

Tokens / day

-

Requests / day

-

Performance Past 3 Days

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

AiHubmix-Phi-4-mini-reasoningstep-3.7-flash

Throughput (tok/s)

-

TTFT (s)

-

Uptime (%)

-

Cost calculator

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

AIHubMix Phi 4 Mini (reasoning)
$9.00 /mo
Step 3.7 Flash
$33.00 /mo

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

FAQ

Which is cheaper: AIHubMix Phi 4 Mini (reasoning), Step 3.7 Flash?

AIHubMix Phi 4 Mini (reasoning): $0.12/M output tokens; Step 3.7 Flash: $1.32/M. Use the cost calculator above to estimate your own workload.

How large is each context window?

AIHubMix Phi 4 Mini (reasoning) accepts 128,000 and Step 3.7 Flash accepts 256,000 input tokens.

What inputs and capabilities does each model support?

AIHubMix Phi 4 Mini (reasoning) accepts text input; Step 3.7 Flash accepts text, image and video input.

Can I call AIHubMix Phi 4 Mini (reasoning) 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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