Conversation / Quote
Step-3.5-Flash API Price
StepFun · step-3-5-flash
| Billing | CNY · 1M tokens |
|---|---|
| Context Window | 131K tokens |
| Modalities | Text |
| Deep Thinking | Supported |
| Verified Date | 2026-09-05 |
| Official pricing page | platform.stepfun.com/docs/zh/guides/pricing/details ↗ |
Report a pricing issue
Found inaccurate pricing or model information? We will review it.
Monthly Cost Estimate
30 days · no cache hits · list price
Free quotas, tiered pricing, batch discounts, and time-based pricing are not included; refer to official bills.
StepFun Related Models
- step-5-preview ¥7 / ¥20
- step-3.7-flash ¥1.35 / ¥8.1
- step-3.5-flash-2603 ¥0.7 / ¥2.1
- step-1o-turbo-vision ¥2.5 / ¥8
- step-2x-large Tiered
- stepaudio-2.5-tts Tiered
- StepAudio 3 TTS Tiered
- stepaudio-3-realtime-preview Free
- stepaudio-3-chat-preview Free
- stepaudio-2.5-realtime ¥10 / ¥70
- stepaudio-2.5-chat ¥10 / ¥25
- step-1o-audio ¥25 / ¥60
- step-audio-2 ¥10 / ¥70
- step-audio-r1.5 ¥10 / ¥105
- stepaudio-3-asr-max Tiered
- stepaudio-2.5-asr Tiered
- stepaudio-3-music-preview Free
- step-3.5-flash ¥0.7 / ¥2.1
- step-tts-2 Tiered
- Step TTS Mini Tiered
- stepaudio-3-gen-preview Free
- stepaudio-2.5-asr-stream Tiered
- stepaudio-2-asr-pro Tiered
- step-asr Tiered
- step-asr-1.1 Tiered
- step-asr-1.1-stream Tiered
- step-image-edit-2 Tiered
FAQ
How much does the Step-3.5-Flash API cost?
Input ¥0.7/1M tokens, output ¥2.1/1M tokens
How large is the Step-3.5-Flash context window?
131K tokens. Handles long documents, multi-turn conversations and large-scale inputs.
Which input modalities does Step-3.5-Flash support?
Text. Supports deep thinking / reasoning.
What is the approximate monthly cost of Step-3.5-Flash?
Depends on volume: light use (1M input + 300K output per day) ≈ ¥39.9/month; medium (5M + 1.5M) ≈ ¥199.5/month; heavy agents (10M + 3M) ≈ ¥399/month. Cache hits, batch discounts and tiered pricing can lower this further.
How does Step-3.5-Flash compare with peers on value?
StepFun Step-3.5-Flash is priced low among comparable models; compare against GPT-4o, Claude 3.5 and Gemini 2.5. See the Pricemon market table for a full comparison.
What use cases suit Step-3.5-Flash?
Good for: chat systems, customer support, content generation, coding assistance, data analysis.The long context supports deep-analysis scenarios.
Does Step-3.5-Flash have a free tier?
Check StepFun's official pricing page for the latest free quota, trial policy and tiered pricing. Policies differ by vendor and change over time.