# Kimi K3 智能体评测第二，但成本耗时双高

- 来源：Artificial Analysis (@ArtificialAnlys)
- 发布时间：2026-07-22 07:51
- AIHOT 分数：55
- AIHOT 链接：https://aihot.virxact.com/items/cmrvb7cwj00imbihby1qk3u3s
- 原文链接：https://x.com/ArtificialAnlys/status/2079715807983210572

## AI 摘要

Kimi K3 在 AA-Briefcase 智能体知识工作基准上以 1543 Elo 排名第二，仅次于 Claude Fable 5（1574），领先 GPT-5.6 Sol 和 Claude Opus 4.8。该模型为 2.8T 参数，但每任务平均成本达 10.57 美元（较前代 K2.6 涨约 10 倍），平均耗时 56.4 分钟，主要因高轮次（83 轮）和输出 token 用量大。

## 正文

Kimi K3 is second only to Fable 5 on AA-Briefcase， our agentic knowledge work benchmark， but costs more than Opus 4.8 to run while averaging nearly an hour per task

Last week @Kimi_Moonshot released Kimi K3， a 2.8T parameter model that scores 57 on the Artificial Analysis Intelligence Index， comparable to models such as Opus 4.8 and GPT-5.5. On AA-Briefcase， Kimi K3 scores an Elo of 1543， a +727 improvement over Kimi K2.6 and the second highest score recorded， behind only Claude Fable 5 （1574）

AA-Briefcase is our new proprietary benchmark for agentic knowledge work， testing models on a fully private dataset of realistic tasks across thousands of complex input files. Tasks require deliverables such as spreadsheets， presentations， and UI mock-ups， with performance combined into a single AA-Briefcase Elo based on correctness， analytical quality， and presentation quality

Key results for Kimi K3 on AA-Briefcase：

➤ Second only to Fable 5： Kimi K3 achieves an AA-Briefcase Elo of 1543， the second-highest score overall， ahead of GPT-5.6 Sol （max， 1501）， Claude Sonnet 5 （max， 1388）， and Claude Opus 4.8 （max， 1347）. This is a +727 improvement over the previous-generation Kimi K2.6 （816） and puts Kimi K3 only behind Fable 5

➤ Strong objective and analytical performance， with comparatively weaker presentation： Kimi K3 achieves a rubric pass rate of 51%， second only to Claude Fable 5 （56%） and ahead of Claude Sonnet 5 （max， 42.3%） and GPT-5.6 Sol （max， 41.8%）. It also records an analytical quality Elo of 1754， comparable to Claude Fable 5 （1744）. Presentation quality is comparatively weaker， with a Presentation Elo of 1471， below GPT-5.6 Sol （max， 1660） and Claude Opus 4.8 （max， 1492）

➤ ~10x increase in Cost per Task： Kimi K3 averages a cost of $10.57 per task， a ~10x increase from Kimi K2.6， placing it among the most expensive models to run on AA-Briefcase. This is driven by model token pricing， increased output tokens and relatively high turn use， averaging 83 turns per task， versus 67 for Claude Fable 5 and 50 for GPT-5.6 Sol （max）. Kimi K3 is priced at $3/$15 per 1M input/output tokens， with a 90% discount for cached tokens

➤ Averages nearly an hour per task： Kimi K3 has an average Time per AA-Briefcase Task of 56.4 minutes. This is driven by a high number of turns， high output token use， and lower speeds using the first-party Kimi API