Step 3.5 Flash (Free) API Pricing / Price per 1M tokens
阶跃星辰 (StepFun) • API Price Comparison
Also known as: step-3.5-flash-(free) · step3.5flash(free) · step3.5-flash-(free) · step3.5 flash (free)
Updated on · Published currencies / per 1M tokens; cheapest ranked by input
| Channel | Input / 1M | Output / 1M | Cache read / 1M | Updated / verified on |
|---|---|---|---|---|
| Official | No official quote recorded | |||
| No channel quotes available | ||||
— means the price or date is not recorded. Cross-currency ranking uses exchange rates.
Step 3.5 Flash (Free) is a large language model by 阶跃星辰 (StepFun) with a 256K-token context window. Prices are collected daily from official provider pages and every tracked channel, then cross-checked by a data-accuracy audit.
| Channel | Type | Input / 1M | Output / 1M | Rate Limit | China | vs Official |
|---|
| Usage Level | Tokens/Month |
|---|---|
| 🐣 Light | 0.1M in + 0.1M out |
| 📊 Medium | 1.0M in + 0.5M out |
| 🚀 Heavy | 10.0M in + 5.0M out |
| 🏢 Enterprise | 100.0M in + 50.0M out |
Frequently asked questions about step-3.5-flash-(free)
How much does the Step 3.5 Flash (Free) API cost?
No input rate is available.
Which channel has the cheapest Step 3.5 Flash (Free) API?
No input rates are available to compare.
What is the Step 3.5 Flash (Free) cache-read price?
No cache-read rate is recorded; missing prices do not imply free caching.
When was Step 3.5 Flash (Free) pricing last updated?
Updated on 2026-03-03. This is the latest recorded price update or verification; see the table for individual channel dates.