stepfun
StepFun: Step 3.7 Flash API Pricing
StepFun: Step 3.7 Flash costs $0.200 per 1M input tokens and $1.15 per 1M output tokens (cache reads: $0.040). Context window: 262K. Prices verified 2026-08-23 · source
Input / 1M tokens
$0.200
Output / 1M tokens
$1.15
Context window
262K
Max output
256K
What would StepFun: Step 3.7 Flash cost you per month?
| Workload | Requests/mo | Avg tokens (in/out) | Est. monthly cost |
|---|---|---|---|
| Light chatbot | 10,000 | 800 / 400 | $6.20 |
| Coding agent | 5,000 | 8,000 / 2,000 | $19.50 |
| RAG pipeline | 30,000 | 4,000 / 500 | $41.25 |
| Doc summarizer | 2,000 | 20,000 / 1,000 | $10.30 |
Estimates use list prices without prompt caching. Caching can cut input cost by up to 90% on repeated context.
About StepFun: Step 3.7 Flash
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...