step-3.5-flash-2603
- In Input modalities: Text Out Output modalities: Text
- Reasoning
- Tool use
Prices
2 offerings · prices as listed StepFun API (opens in a new tab)
step-3.5-flash-2603| Conditions/ 1M tokens | Input | Cache read | Output |
|---|---|---|---|
| Standard | $0.10 | $0.020 | $0.30 |
Prices from StepFun: pricing details (opens in a new tab) (checked Oct 31, 2026)
StepFun API (opens in a new tab)
step-3.5-flash-2603| Conditions/ 1M tokens | Input | Cache read | Output |
|---|---|---|---|
| Standard | ¥0.70 | ¥0.14 | ¥2.10 |
Prices from 阶跃星辰：定价明细 (opens in a new tab) (checked Oct 31, 2026)
Standard: the price a request with no conditions pays (the headline price elsewhere on the site).
Details
- Knowledge cutoff
- Jan 2025
- Family
- step-flash
- Model ID
Not stated on StepFun’s pages: max input, reasoning efforts, reasoning can be off, max thinking budget, structured output, built-in tools, aliases.
Cited scores
From third-party leaderboards, not measured by usThis model isn’t on any leaderboard we cite yet.
Changes
All changes →No changes recorded yet.
Sources
- StepFun: pricing details (opens in a new tab) platform.stepfun.ai · checked Oct 31, 2026
- models.dev: stepfun/step-3.5-flash-2603 (community data, MIT) (opens in a new tab) github.com · checked Oct 10, 2026
- 阶跃星辰：定价明细in Chinese (opens in a new tab) platform.stepfun.com · checked Oct 31, 2026
- Step 3.5 Flash - StepFun 开放平台文档中心in Chinese (opens in a new tab) platform.stepfun.com · checked Nov 5, 2026
- Chat Completions API - StepFun 开放平台文档中心in Chinese (opens in a new tab) platform.stepfun.com · checked Nov 5, 2026
Some values on this page are still waiting to be checked against official pages: a filled dot is verified, a hollow one is not yet (with or without a source on file). How we verify data
StepFun · China · stepfun.com
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