所有模型

Step 5 Preview 与 K2 Horizon 375B A23B 对比

从智能、价格、速度、上下文窗口等方面比较 Step 5 Preview 与 K2 Horizon 375B A23B。

如需了解我们的方法论,请参阅方法论页面。

StepFunStepFun
Institute of Foundation ModelsInstitute of Foundation Models
智能
Intelligence Index
44
31
AA-Briefcase v1.1
1432
1295
GDPval-AA v2.1
1566
1349
AutomationBench-AA
51%
37%
Terminal-Bench 4.0
33%
2%
SciCode
59%
43%
Humanity's Last Exam
46%
32%
GDP.pdf
15%
7%
CritPt
21%
5%
AA-Omniscience
16
−3
AA-LCR v1.1
88%
80%
成本
每 100 万 Token 价格
$0.505
$0.00
每 100 万输入 Token 价格
$1.00
$0.00
每 100 万输出 Token 价格
$2.70
$0.00
每 100 万缓存命中 Token 价格
$0.05
每任务成本
$0.72
$0.00
运行 Intelligence Index 的成本
US$929
US$0
Token 使用量
每任务输出 Token 数
64k
52k
每任务推理 Token 数
43k
36k
运行 Intelligence Index 的输出 Token 数
156M
126M
性能
输出速度
85 token/秒
123 token/秒
首 Token 延迟
3.12 秒
21.89 秒
首个回答 Token 时间
26.61 秒
38.17 秒
端到端响应时间
32.49 秒
42.24 秒
每任务耗时
708.06 秒
445.76 秒
技术规格
上下文窗口
1000k token约 1,500 页 A4 纸(12 号 Arial 字体)
524k token约 786 页 A4 纸(12 号 Arial 字体)
发布日期
2026年9月
2026年9月
总参数量
600B
375B
活跃参数量
27B
23B
推理
是
是
输入模态

支持:文本和图像

支持:文本

输出模态

支持:文本

支持:文本

开放权重
否
是
许可证
Apache 2.0
许可证允许不受限制地商用
是

亮点

Updated
Artificial Analysis Intelligence Index · Higher is better
Output tokens per second · Higher is better
Weighted average cost (USD) per Intelligence Index task · Lower is better

智能Updated

Artificial Analysis Intelligence Index

Artificial Analysis Intelligence Index v4.3.2 incorporates 10 evaluations: AA-Briefcase v1.1, GDPval-AA v2.1, AutomationBench-AA, Terminal-Bench 4.0, SciCode, Humanity's Last Exam, GDP.pdf, CritPt, AA-Omniscience, AA-LCR v1.1
Not publicly available

Artificial Analysis Intelligence Index:开放权重与专有模型

Artificial Analysis Intelligence Index v4.3.2 incorporates 10 evaluations: AA-Briefcase v1.1, GDPval-AA v2.1, AutomationBench-AA, Terminal-Bench 4.0, SciCode, Humanity's Last Exam, GDP.pdf, CritPt, AA-Omniscience, AA-LCR v1.1
Not publicly available

衡量模型在特定能力和行业中的表现

Artificial Analysis 财务与会计指数

Incorporates 7 evaluations: AA-Omniscience, GDPval-AA v2.1, AA-Briefcase v1.1, Humanity's Last Exam, AutomationBench-AA, AA-LCR v1.1, GDP.pdf · Higher is better
Not publicly available

Intelligence Evaluations

Intelligence evaluations measured independently by Artificial Analysis · Higher is better
查看更多
Not publicly available

Agentic knowledge work, (Elo-500)/2000

Agentic real-world work tasks, (Elo-500)/2000

Agentic SaaS workflows

Agentic coding & terminal use

SciCodeUnder review

Coding

Reasoning & knowledge

Professional document reasoning, All-pass

CritPtUnder review

Physics reasoning

Long context reasoning

Legal agentic work, criterion pass rate

Agentic business operations

Agentic scientific research workflows in a terminal

Quantitative analysis on spreadsheets & documents

Kubernetes incident root-cause analysis

Visual reasoning

Medical long context reasoning

AA-Briefcase v1.1Updated

AA-Briefcase Elo

AA-Briefcase v1.1 is an agentic knowledge work benchmark developed by Artificial Analysis. AA-Briefcase Elo is a combined metric that aggregates rubric pass rate, analytical quality Elo and presentation Elo · Higher is better
Not publicly available

AA-Omniscience

AA-Omniscience Index

AA-Omniscience Index (higher is better) measures knowledge reliability and hallucination. It rewards correct answers, penalizes hallucinations, and has no penalty for refusing to answer. Scores range from -100 to 100, where 0 means as many correct as incorrect answers, and negative scores mean more incorrect than correct.
Not publicly available

开放性指数

Artificial Analysis 开放性指数:得分

开放性指数以 0 至 100 的标准化评分衡量模型的开放程度(分数越高,越开放)

Intelligence Index 比较

Intelligence Index 与每项任务的成本

Artificial Analysis Intelligence Index · Weighted average cost (USD) per Artificial Analysis Intelligence Index task
Most attractive quadrant
Pareto line

单任务成本(美元,对数刻度)

Token 使用量

Output Tokens per Intelligence Index Task

Weighted average number of output tokens used to run one task in the Artificial Analysis Intelligence Index
Not publicly available

成本

每项 Intelligence Index 任务的成本

Weighted average cost (USD) per Artificial Analysis Intelligence Index task, segmented by token type. Lower is better
Not publicly available

运行 Artificial Analysis Intelligence Index 的成本

Cost (USD) to run all evaluations in the Artificial Analysis Intelligence Index
Not publicly available

Pricing: Cache Hit, Input, and Output

Price (USD per M Tokens)
Not publicly available

上下文窗口

上下文窗口

Context window: tokens limit · Higher is better
Not publicly available

速度

按输出速度(每秒 token 数)衡量

Output Speed

Output tokens per second · Higher is better

Time per Intelligence Index Task

Weighted average decode time (minutes) per task; excludes TTFT and overhead time · Lower is better

延迟

按首 Token 延迟(秒)衡量

Latency: Time To First Answer Token

Seconds to first answer token received · Accounts for reasoning model 'thinking' time

端到端响应时间

Seconds to output 500 tokens, calculated based on time to first token, 'thinking' time for reasoning models, and output speed

End-to-End Response Time

Seconds to output 500 tokens, including reasoning model 'thinking' time · Lower is better

模型规模(仅开放权重模型)

模型规模:总参数量与活跃参数量

Comparison between total model parameters and parameters active during inference (billions)

常见问题