Step 3.5 Flash
AvailableStep 3.5 Flash is StepFun's most capable open-source foundation model. Built on a sparse Mixture of Experts (MoE) architecture, it selectively activates only 11B of its 196B parameters per token....
- Context
- 262.1K tokens
- Max output
- 65.5K tokens
- Input / 1M tokens
- $0.10per 1M tokens
- Output / 1M tokens
- $0.30per 1M tokens
- Listed since
- Jan 29, 2026
Prices and model data from OpenRouter
Where it's availableProviders · 1
| Provider | Input / 1M tokens | Output / 1M tokens | Status |
|---|---|---|---|
| OpenRouter | $0.10 | $0.30 | Available |
Published benchmark results
From independent leaderboards, each credited to its publisher.