StepFun
Step 3.7 Flash
Newer StepFun flash model for faster agents, coding, and multimodal prompts
Model facts
- Context window
- 256K tokens
- Maximum output
- 256K tokens
- Cheapest paid input
- $0.185 per 1M tokens
- Cheapest paid output
- $1.11 per 1M tokens
- Open weights
- yes
- Providers
- 21
Capabilities and modalities
reasoning, tool calling, structured output, attachments, temperature control, open weights, text, image, video.
Artificial Analysis benchmarks
Compare this model on the full LLM benchmark leaderboard.
| Configuration | AAI | Coding | Math | Output tokens/s |
|---|---|---|---|---|
| default | 30.9 | 39.6 | not measured | 101.9 |
Observed price history
- 2026-08-24: $0.18 input / $1.03 output per 1M tokens
- 2026-08-28: $0.185 input / $1.11 output per 1M tokens
API providers
- Kenari — model id step-3-7-flash; free input / free output per 1M tokens; provider documentation
- Kenari (Free) — model id step-3-7-flash:free; free input / free output per 1M tokens; provider documentation
- Kilo Gateway (free) — model id stepfun/step-3.7-flash:free; free input / free output per 1M tokens; provider documentation
- Nvidia — model id stepfun-ai/step-3.7-flash; free input / free output per 1M tokens; provider documentation
- UnoRouter — model id step-3.7-flash:free; free input / free output per 1M tokens; provider documentation
- ZenMux (Free) — model id stepfun/step-3.7-flash-free; free input / free output per 1M tokens; provider documentation
- StepFun (China) — model id step-3.7-flash; $0.185 input / $1.11 output per 1M tokens; provider documentation
- StepFun (Global) — model id step-3.7-flash; $0.185 input / $1.11 output per 1M tokens; provider documentation
- Ambient — model id stepfun/step-3.7-flash; $0.19 input / $1.14 output per 1M tokens; provider documentation
- Deep Infra — model id stepfun-ai/Step-3.7-Flash; $0.2 input / $1.15 output per 1M tokens; provider documentation
- Eden AI — model id deepinfra/stepfun-ai/Step-3.7-Flash; $0.2 input / $1.15 output per 1M tokens; provider documentation
- Eden AI — model id flexai/Step-3.7-Flash; $0.2 input / $1.15 output per 1M tokens; provider documentation
- EmpirioLabs AI — model id step-3-7-flash; $0.2 input / $1.15 output per 1M tokens; provider documentation
- Hugging Face — model id stepfun-ai/Step-3.7-Flash; $0.2 input / $1.15 output per 1M tokens; provider documentation
- Kilo Gateway — model id stepfun/step-3.7-flash; $0.2 input / $1.15 output per 1M tokens; provider documentation
- OpenRouter — model id stepfun/step-3.7-flash; $0.2 input / $1.15 output per 1M tokens; provider documentation
- Requesty — model id step-3.7-flash; $0.2 input / $1.15 output per 1M tokens; provider documentation
- Vercel AI Gateway — model id stepfun/step-3.7-flash; $0.2 input / $1.15 output per 1M tokens; provider documentation
- ZenMux — model id stepfun/step-3.7-flash; $0.2 input / $1.15 output per 1M tokens; provider documentation
- StepFun Step Plan (China) — model id step-3.7-flash; not published input / not published output per 1M tokens; provider documentation
- StepFun Step Plan (Global) — model id step-3.7-flash; not published input / not published output per 1M tokens; provider documentation