Step 3.5 Flash
step-3.5-flashA lightweight model for fast multimodal reasoning and coding assistance.
StepFun flash lane for quick multimodal reasoning and coding assistance
256K context256K context
Released2026-01-29
Relays0 sites
reasoningcode generationmultimodalfast
Model information
- Model ID
- step-3.5-flash
- Context
- 256K
- Max input
- 256K
- Max output
- 256K
- Knowledge cutoff
- 2025-01
- Open weights
- Supported
- License
- -
- Release date
- 2026-01-29
Input
Text: SupportedImage: Not supportedAudio: Not supportedVideo: Not supportedPDF: Not supportedFile: Not supported
Output
Text: SupportedImage: Not supportedAudio: Not supportedVideo: Not supported
API capabilities
Reasoning: SupportedTool call: SupportedStructured output: UnknownTemperature: Supported
StepFun (China) Official Pricing
CNYUpdated: 2026-10-04T23:35:59.313+08:00
Input
~¥0.6689/ 1M tokens
Output
~¥2.007/ 1M tokens
Cache read
~¥0.1338/ 1M tokens
Relay Comparison
Compare token, per-request, or per-second pricing by relay channel.
Unit: token prices are ¥ / 1M tokens; per-request and per-second rows use their shown unit
No prices are available for this model yet.
How should Step 3.5 Flash relay pricing be compared?
This Step 3.5 Flash pricing page compares official pricing with public prices from 0 listed AI gateways. Token prices are shown in CNY per 1M tokens, while per-request, per-second, and per-character rows use the unit shown in the table. Last updated: No clear update time.
- Data sources
- Public price catalogs, official pricing records, and monitoring results.
- Metric definitions
- Uptime means successful probe response rate, fake-rate signals possible model mismatch or abnormal output risk, and latency is average API response time.
- Risk note
- Relay gateways are third-party services. Pricing, billing, privacy, and stability can change; start with a small top-up and verify reliability before continued use.