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StepFun: Step 3.7 Flash API Pricing

StepFun: Step 3.7 Flash is an API model from stepfun. It costs $0.2 per 1M input tokens and $1.15 per 1M output tokens, with cached input at $0.04. Its context window is 262,144 tokens with up to 230,400 output tokens. A workload of 10M input + 2M output tokens costs about $4.3 per month.
Input
$0.2
per 1M tokens
Output
$1.15
per 1M tokens
Cached input
$0.04
per 1M tokens
Context window
262K
262,144 tokens
Blended (80/20)
$0.39
per 1M tokens

Step 3.7 Flash is StepFun's latest high-efficiency multimodal Mixture-of-Experts model. It pairs a 196B-parameter language backbone with a vision encoder for native image and video understanding, activating roughly 11B parameters...

How much does StepFun: Step 3.7 Flash cost for a real workload?

At 10M input + 2M output tokens per month, StepFun: Step 3.7 Flash costs about $4.3 ($2 input + $2.3 output). Try your own volumes in the cost calculator.

What are cheaper alternatives to StepFun: Step 3.7 Flash?

Where to run StepFun: Step 3.7 Flash

AI/ML API: one API key for 400+ models, including most models tracked here · Novita AI: pay-as-you-go APIs for open models (DeepSeek, Qwen, Llama and more) plus GPU cloud. Prices there follow each platform's own catalog and can differ from the list prices tracked here.

Run it on AI/ML API →Run it on Novita AI →

Disclosure: links to these platforms may be affiliate links — if you sign up or buy through them, LLMPrices may earn a commission at no extra cost to you.

Compare StepFun: Step 3.7 Flash with other models

StepFun: Step 3.7 Flash vs StepFun: Step 3.5 FlashStepFun: Step 3.7 Flash vs StepFun: Step 5 Preview

Frequently asked questions

How much does StepFun: Step 3.7 Flash cost?

StepFun: Step 3.7 Flash costs $0.2 per 1M input tokens and $1.15 per 1M output tokens (list price, snapshot October 22, 2026). At 10M input + 2M output tokens per month that is about $4.3.

What is the context window of StepFun: Step 3.7 Flash?

StepFun: Step 3.7 Flash has a context window of 262,144 tokens and can return up to 230,400 output tokens per response.

What are cheaper alternatives to StepFun: Step 3.7 Flash?

Cheaper models include Qwen: Qwen3.6 Flash ($0.1875 in / $1.125 out), Xiaomi: MiMo-V2.6-Pro ($0.435 in / $0.87 out), Reflection: Beam 1.0 501B A23B ($0.3 in / $1 out). See the full list on this page.

Is StepFun: Step 3.7 Flash free to use?

No. StepFun: Step 3.7 Flash is a paid model at $0.2 input / $1.15 output per 1M tokens. 21 free models are listed on the free models page.

Provider: stepfun · Model ID: stepfun/step-3.7-flash · Modality: text+image+video->text · Price snapshot October 22, 2026, refreshed daily. How we collect prices