Step 3.7 Flash by StepFun: released May 23, 2026; 198B total, ~11B active parameters; 256K-token context; open weights under Apache-2.0; API available outside China; list price $0.20 input (cache miss) / $1.15 output per 1M tokens.
Verified facts
- Outside China
- Global API · verified Sep 29, 2026 · Evidence
- Open weights
- Yes · verified Sep 29, 2026 · Evidence
- License
- Apache-2.0 · verified Sep 29, 2026 · Evidence
- Claim status
- Company-reported · verified Sep 29, 2026 · Evidence
- Parameters
- 198B total, ~11B active · verified Sep 29, 2026 · Evidence
- Context window
- 262,144 tokens · verified Sep 29, 2026 · Evidence
- List price
- $0.20 input (cache miss) / $1.15 output per 1M tokens · verified Sep 29, 2026 · Evidence
- Hugging Face
- stepfun-ai/Step-3.7-Flash · verified Sep 29, 2026
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Release timeline
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