Step 3.7 Flash
稀疏 MoE 多模态推理模型（总参数 198B，激活参数 11B），支持图像和视频理解。
规格
- 上下文
- 262.1K
- 最大输出
- —
- 输入价
- $0.2/ 百万 Token
- 输出价
- $1.15/ 百万 Token
- 发布日期
- 2026-05-29
上下文
- 上下文
- 262.1K
- 最大输入
- —
- 最大输出
- —
价格 · USD / 百万 Token
- 输入
- $0.2
- 输出
- $1.15
- 缓存读取
- $0.04
- 缓存写入
- —
输入输出
- 输入
- 文本图像视频
- 输出
- 文本
API
- 接口类型
思考
- 支持思考
- 支持
- 思考等级
源信息
- 状态
- 可用
- 发布日期
- 2026-05-29
- 知识截止
- —
能力
- 已确认
调用方式
1 个 Provider
stepfunmodel = step-3.7-flashreasoning = reasoning_effort
chat
POSThttps://api.stepfun.ai/v1/chat/completions
messages
POSThttps://api.stepfun.ai/v1/messages
JSON
标准格式
{
"id": "step-3.7-flash",
"object": "model",
"created": 1780012800,
"owned_by": "stepfun",
"name": "Step 3.7 Flash",
"api": {
"types": [
"chat",
"messages"
]
},
"limits": {
"context": 262144,
"input": null,
"output": null
},
"modalities": {
"input": [
"text",
"image",
"video"
],
"output": [
"text"
]
},
"reasoning": {
"supported": true,
"efforts": [
"low",
"medium",
"high"
]
},
"pricing": {
"currency": "USD",
"unit": "1M_tokens",
"input": 0.2,
"output": 1.15,
"cache_read": 0.04,
"cache_write": null
},
"features": [
"tools",
"streaming",
"caching"
],
"info": {
"status": "active",
"release_date": "2026-05-29",
"knowledge_cutoff": null,
"description": "Sparse MoE multimodal reasoning model (198B total, 11B active) with image and video understanding.",
"docs": "https://platform.stepfun.ai/docs/en/guides/models/step-3.7-flash",
"verified_at": "2026-10-11"
}
}官方来源
6
Step Platform pricing | StepFun Documentationplatform.stepfun.ai2026-10-10Model overview | StepFun Documentationplatform.stepfun.ai2026-10-10Chat completion | StepFun API referenceplatform.stepfun.ai2026-10-10Step 3.7 Flash | StepFun Documentationplatform.stepfun.ai2026-10-10Messages API | StepFun Documentationplatform.stepfun.ai2026-10-11Step 3.7 Flash | StepFun Blogstatic.stepfun.com2026-10-11