StepFun (China)
Step 3.5 Flash Pricing
API pricing for Step 3.5 Flash by StepFun (China). Input tokens cost $0.1/1M, output tokens cost $0.3/1M with 256K context window.
Last updated:
ReasoningTools
Input Cost
$0.1
per 1M tokens
Output Cost
$0.3
per 1M tokens
Context Window
256K
tokens
Cost Calculator
Estimated Cost:
$0.00
Model Details
Provider StepFun (China)
Model ID step-3.5-flash
Context Window 256K tokens
Max Output 256000 tokens
Cache Read Cost $0.02/1M
Release Date 2026-01-29
Compare Alternatives
| Model | Input | Output | Context |
|---|---|---|---|
| Step 3.5 Flash (this model) | $0.1 | $0.3 | 256K |
| Devstral Small Mistral | $0.1 | $0.3 | 128K |
| Devstral Small 2505 Mistral | $0.1 | $0.3 | 128K |
| Mistral Small 3.2 Mistral | $0.1 | $0.3 | 128K |
| Voxtral Small (latest) Mistral | $0.1 | $0.3 | 32K |
| Step 3.5 Flash 2603 StepFun (China) | $0.1 | $0.3 | 256K |
Available from Resellers
Step 3.5 Flash is also available through these resellers and gateways:
| Reseller | Model | Input | Output |
|---|---|---|---|
| Ambient | Step 3.7 Flash | $0.19 | $1.14 |
| Deep Infra | Step 3.7 Flash | $0.2 | $1.15 |
| EmpirioLabs AI | Step 3.5 Flash | $0.1 | $0.3 |
| EmpirioLabs AI | Step 3.5 Flash 2603 | $0.1 | $0.3 |
| EmpirioLabs AI | Step 3.7 Flash | $0.2 | $1.15 |
| Hugging Face | Step 3.5 Flash | $0.1 | $0.3 |
| Hugging Face | Step 3.7 Flash | $0.2 | $1.15 |
| Kilo Gateway | Step 3.5 Flash | $0.1 | $0.3 |
| Kilo Gateway | Step 3.7 Flash | $0.2 | $1.15 |
| NanoGPT | Step 3.5 Flash | $0.2 | $0.5 |