Step 3.7 Flash: API pricing, providers and specs
Step 3.7 Flash is a text model by StepFun. 14 providers serve it, from $0.925 to $1.33 /1M; the lowest price is at APIMart.
How Step 3.7 Flash compares
Against the 737 text models on the site priced the same way.
- Mid-priced: its lowest price is $0.925 /1M against a median of $1.10; 48% of comparable models cost less.
- Its 262K-token context window is larger than 45% of them (median 262K), about 390 pages of text.
- 14 providers serve it; 83% of comparable models have fewer.
- Its weights are open under the Apache 2.0 license: commercial use allowed.
Step 3.7 Flash prices by provider
Every provider's list price, read from its own price page or API. A price marked “from” changes with context length, resolution or mode.
| Provider | Input | Output | Prompt caching | Context |
|---|---|---|---|---|
| APIMart | $0.154/1M | $0.925/1M | — | — |
| ZenMux | $0.20/1M | $1.15/1M | $0.04/1M | 256K |
 Novita AI | $0.20/1M | $1.15/1M | $0.04/1M | — |
 Hugging Face | $0.20/1M | From$1.15/1M | — | — |
| Vercel AI Gateway | $0.20/1M | $1.15/1M | $0.04/1M | 256K |
 EmpirioLabs AI | $0.20/1M | $1.15/1M | $0.04/1M | 256K |
| OpenRouter | $0.20/1M | From$1.15/1M | $0.04/1M | 262K |
| DevPass (LLM Gateway) | $0.20/1M | From$1.15/1M | $0.04/1M | — |
 Requesty | $0.20/1M | From$1.15/1M | $0.04/1M | 262K |
 Impossibl | $0.20/1M | $1.15/1M | $0.04/1M | — |
 Poe | $0.202/1M | $1.16/1M | $0.04/1M | 262K |
| AI/ML API | $0.212/1M | $1.22/1M | $0.042/1M | — |
 AIHubMix | $0.22/1M | $1.32/1M | $0.044/1M | 256K |
 Kenari | $0.232/1M | $1.33/1M | $0.046/1M | — |
- APIMart$0.925
- ZenMux$1.15
- Novita AI$1.15
- Vercel AI Gateway$1.15
- EmpirioLabs AI$1.15
- Impossibl$1.15
- Hugging FaceFrom$1.15
- OpenRouterFrom$1.15
- DevPass (LLM Gateway)From$1.15
- RequestyFrom$1.15
- Poe$1.16
- AI/ML API$1.22
Specs
- Type
- Text
- Maker
- StepFun
- Inputs
- Image, Text, Video
- Outputs
- Text
- Context
- 262K≈ 390 pages of text
- Max output
- 256K
- Capabilities
- Prompt caching, JSON, Reasoning, Tool calling, Vision
- Released
- May 23, 2026
- License
- Apache 2.0commercial use allowed
- Open weights
- Yes, downloadable
- Parameters
- 201B
Alternatives to Step 3.7 Flash
Same kind of model from other makers, at a similar price.
| Model | Lowest price | Context | Arena | Providers |
|---|---|---|---|---|
| Step 3.7 Flashthis model | $0.925/1M | 262K | — | 14 |
 GLM-5.3 | $1.10/1M | 1.05M | 1623 | 49 |
 Gemini 3 Flash | $2.40/1M | 1.05M | 1466 | 5 |
 Mistral Large 4 | $2.09/1M | 1.05M | 1543 | 13 |
 Qwen3.8 27B | $0.50/1M | 262K | 1591 | 33 |
| GPT-6 Luna | $0.40/1M | 1.05M | 1578 | 28 |
 Sonar | $1/1M | 127K | — | 9 |
| GLM-5.2 | $1.80/1M | 1M | 1604 | 44 |
| Grok Build 0.1 | $1.60/1M | 256K | — | 18 |
More from StepFun
GOT-OCR 2.0StepFun$0.05/imgStep 2 16KStepFun$2/1MStep 3.5 FlashStepFun$0.292/1MStep 3.5 Flash 2603StepFun$0.30/1MStep 5 PreviewStepFun$2.70/1MStep3StepFun$2.75/1MStepaudio 2.5StepFun$3.50/1MStepaudio 2.5 RealtimeStepFun$10/1MStep 3.7 Flash FAQ
The lowest price for Step 3.7 Flash is $0.925 /1M, at APIMart.
APIMart, at $0.925 /1M. 14 providers serve Step 3.7 Flash; the table above lists every one with its price.
Step 3.7 Flash reads up to 262K tokens per request and writes up to 256K.
Yes. Step 3.7 Flash's weights can be downloaded from its maker's Hugging Face page, under the Apache 2.0 license.
About 201B, as the safetensors metadata of its official Hugging Face repo states.
14 API providers serve Step 3.7 Flash. Compare their prices above, or open a provider to see everything it offers.
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