Step 3.5 Flash
StepFun / 阶跃星辰 · 2026-01-31 · 类别未确认
官方发布来源 · 按需求选型 · 查看覆盖缺口 · 归档与转录记录
Step 3.5 Flash
发布文将其定位为“快、准、稳”的智能体智能模型(Apache 2.0 开源,196B 总参/约 11B 激活稀疏 MoE,MTP-3,256K 上下文)。16 项评测以智能体搜索、数学与编码为主,亮点为 HMMT 2025 二月场 98.4 与 AIME 2025 97.3。
- 输入模态
- 文本
- 上下文
- 256K
- 参数
- 196B-A11B MoE
- 价格(每百万 tokens)
- 无此口径报价;不等于免费
本变体的评测证据
归一化读数:不计算;样本及方差不完整,无法计算置信区间。
原文位置与完整协议
heading: 3. Performance → Detailed Benchmarks · table: Detailed Benchmarks · row: tau2-bench
{
"harness": null,
"tools": null,
"shots": null,
"reasoning_effort": null,
"temperature": null,
"top_p": null,
"token_budget": null,
"turn_limit": null,
"time_limit": null,
"run_count": null,
"aggregation": null,
"judge": null
}归一化读数:不计算;样本及方差不完整,无法计算置信区间。
原文位置与完整协议
heading: 3. Performance → Detailed Benchmarks · table: Detailed Benchmarks · row: browsecomp
{
"harness": null,
"tools": null,
"shots": null,
"reasoning_effort": null,
"temperature": null,
"top_p": null,
"token_budget": null,
"turn_limit": null,
"time_limit": null,
"run_count": null,
"aggregation": null,
"judge": null
}归一化读数:不计算;样本及方差不完整,无法计算置信区间。
原文位置与完整协议
heading: 3. Performance → Detailed Benchmarks · table: Detailed Benchmarks · row: browsecomp
{
"harness": null,
"tools": null,
"shots": null,
"reasoning_effort": null,
"temperature": null,
"top_p": null,
"token_budget": null,
"turn_limit": null,
"time_limit": null,
"run_count": null,
"aggregation": null,
"judge": null
}归一化读数:不计算;样本及方差不完整,无法计算置信区间。
原文位置与完整协议
heading: 3. Performance → Detailed Benchmarks · table: Detailed Benchmarks · row: browsecomp-zh
{
"harness": null,
"tools": null,
"shots": null,
"reasoning_effort": null,
"temperature": null,
"top_p": null,
"token_budget": null,
"turn_limit": null,
"time_limit": null,
"run_count": null,
"aggregation": null,
"judge": null
}归一化读数:不计算;样本及方差不完整,无法计算置信区间。
原文位置与完整协议
heading: 3. Performance → Detailed Benchmarks · table: Detailed Benchmarks · row: browsecomp-zh
{
"harness": null,
"tools": null,
"shots": null,
"reasoning_effort": null,
"temperature": null,
"top_p": null,
"token_budget": null,
"turn_limit": null,
"time_limit": null,
"run_count": null,
"aggregation": null,
"judge": null
}归一化读数:不计算;样本及方差不完整,无法计算置信区间。
原文位置与完整协议
heading: 3. Performance → Detailed Benchmarks · table: Detailed Benchmarks · row: gaia
{
"harness": null,
"tools": null,
"shots": null,
"reasoning_effort": null,
"temperature": null,
"top_p": null,
"token_budget": null,
"turn_limit": null,
"time_limit": null,
"run_count": null,
"aggregation": null,
"judge": null
}归一化读数:不计算;样本及方差不完整,无法计算置信区间。
原文位置与完整协议
heading: 3. Performance → Detailed Benchmarks · table: Detailed Benchmarks · row: xbench-deepsearch
{
"harness": null,
"tools": null,
"shots": null,
"reasoning_effort": null,
"temperature": null,
"top_p": null,
"token_budget": null,
"turn_limit": null,
"time_limit": null,
"run_count": null,
"aggregation": null,
"judge": null
}归一化读数:不计算;样本及方差不完整,无法计算置信区间。
原文位置与完整协议
heading: 3. Performance → Detailed Benchmarks · table: Detailed Benchmarks · row: xbench-deepsearch
{
"harness": null,
"tools": null,
"shots": null,
"reasoning_effort": null,
"temperature": null,
"top_p": null,
"token_budget": null,
"turn_limit": null,
"time_limit": null,
"run_count": null,
"aggregation": null,
"judge": null
}归一化读数:不计算;样本及方差不完整,无法计算置信区间。
原文位置与完整协议
heading: 3. Performance → Detailed Benchmarks · table: Detailed Benchmarks · row: researchrubrics
{
"harness": null,
"tools": null,
"shots": null,
"reasoning_effort": null,
"temperature": null,
"top_p": null,
"token_budget": null,
"turn_limit": null,
"time_limit": null,
"run_count": null,
"aggregation": null,
"judge": null
}new-benchmark: researchrubrics not yet in data/benchmarks/.
归一化读数:不计算;样本及方差不完整,无法计算置信区间。
原文位置与完整协议
heading: 3. Performance → Detailed Benchmarks · table: Detailed Benchmarks · row: aime-25
{
"harness": null,
"tools": null,
"shots": null,
"reasoning_effort": null,
"temperature": null,
"top_p": null,
"token_budget": null,
"turn_limit": null,
"time_limit": null,
"run_count": null,
"aggregation": null,
"judge": null
}归一化读数:不计算;样本及方差不完整,无法计算置信区间。
原文位置与完整协议
heading: 3. Performance → Detailed Benchmarks · table: Detailed Benchmarks · row: hmmt25
{
"harness": null,
"tools": null,
"shots": null,
"reasoning_effort": null,
"temperature": null,
"top_p": null,
"token_budget": null,
"turn_limit": null,
"time_limit": null,
"run_count": null,
"aggregation": null,
"judge": null
}归一化读数:不计算;样本及方差不完整,无法计算置信区间。
原文位置与完整协议
heading: 3. Performance → Detailed Benchmarks · table: Detailed Benchmarks · row: hmmt25
{
"harness": null,
"tools": null,
"shots": null,
"reasoning_effort": null,
"temperature": null,
"top_p": null,
"token_budget": null,
"turn_limit": null,
"time_limit": null,
"run_count": null,
"aggregation": null,
"judge": null
}归一化读数:不计算;样本及方差不完整,无法计算置信区间。
原文位置与完整协议
heading: 3. Performance → Detailed Benchmarks · table: Detailed Benchmarks · row: imo-answerbench
{
"harness": null,
"tools": null,
"shots": null,
"reasoning_effort": null,
"temperature": null,
"top_p": null,
"token_budget": null,
"turn_limit": null,
"time_limit": null,
"run_count": null,
"aggregation": null,
"judge": null
}归一化读数:不计算;样本及方差不完整,无法计算置信区间。
原文位置与完整协议
heading: 3. Performance → Detailed Benchmarks · table: Detailed Benchmarks · row: lcb
{
"harness": null,
"tools": null,
"shots": null,
"reasoning_effort": null,
"temperature": null,
"top_p": null,
"token_budget": null,
"turn_limit": null,
"time_limit": null,
"run_count": null,
"aggregation": null,
"judge": null
}归一化读数:不计算;样本及方差不完整,无法计算置信区间。
原文位置与完整协议
heading: 3. Performance → Detailed Benchmarks · table: Detailed Benchmarks · row: swebench
{
"harness": null,
"tools": null,
"shots": null,
"reasoning_effort": null,
"temperature": null,
"top_p": null,
"token_budget": null,
"turn_limit": null,
"time_limit": null,
"run_count": null,
"aggregation": null,
"judge": null
}归一化读数:不计算;样本及方差不完整,无法计算置信区间。
原文位置与完整协议
heading: 3. Performance → Detailed Benchmarks · table: Detailed Benchmarks · row: terminalbench
{
"harness": null,
"tools": null,
"shots": null,
"reasoning_effort": null,
"temperature": null,
"top_p": null,
"token_budget": null,
"turn_limit": null,
"time_limit": null,
"run_count": null,
"aggregation": null,
"judge": null
}