Step 3.5 Flash

Overview

Model description: original source language.

阶跃星辰的旗舰语言推理模型。该模型具备顶尖推理能力与快速可靠的执行能力。能够完成对复杂任务的分解、计划，可快速可靠地调用工具执行任务，胜任逻辑推理、数学、软件工程、深度研究等各种复杂任务。上下文长度为256K。

Pricing

Pricing follows the current settings of your account group.

API integration

Use a Yunhai API key to call configured models.

curl "$YUNHAI_BASE_URL/chat/completions" \
  -H "Authorization: Bearer $YUNHAI_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"stepfun/step-3.5-flash","messages":[{"role":"user","content":"你好"}]}'