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moonshotai/kimi-k2
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Kimi K2 0711

Kimi K2 Instruct is a large-scale Mixture-of-Experts (MoE) language model developed by Moonshot AI, featuring 1 trillion total parameters with 32 billion active per forward pass. It is optimized for agentic capabilities, including advanced tool use, reasoning, and code synthesis. Kimi K2 excels across a broad range of benchmarks, particularly in coding (LiveCodeBench, SWE-bench), reasoning (ZebraLogic, GPQA), and tool-use (Tau2, AceBench) tasks. It supports long-context inference up to 128K tokens and is designed with a novel training stack that includes the MuonClip optimizer for stable large-scale MoE training.

7/11/2025
131,000 tokens
#52 Vision (Overall)

Specifications

Modalities

Input
text
Output
text

Supported Parameters

frequency_penalty
logprobs
max_tokens
min_p
presence_penalty
repetition_penalty
response_format
seed
stop
structured_outputs
temperature
tool_choice
tools
top_k
top_logprobs
top_p

Frequently asked questions

Is Kimi K2 0711 available on FastMetal?
Not at the moment. Kimi K3, from the same lab, is available on the FastMetal API today.
What is the context window of Kimi K2 0711?
131,000 tokens, shared between the prompt and the response.
How does Kimi K2 0711 rank?
#105 on the public arena's Japanese board (ELO 1,365). Ranks move as the leaderboard is updated.

Leaderboard

Text
OverallELO: 1,418
#119
JapaneseELO: 1,365
#105
ChineseELO: 1,454
#117
KoreanELO: 1,341
#133
EnglishELO: 1,420
#137
frenchELO: 1,419
#131
germanELO: 1,413
#103
spanishELO: 1,383
#147
russianELO: 1,410
#113
CodingELO: 1,460
#126
MathELO: 1,388
#163
Creative WritingELO: 1,370
#142
Instruction FollowingELO: 1,380
#162
Hard PromptsELO: 1,432
#128
Multi-TurnELO: 1,404
#142
Vision
OverallELO: 1,237
#52
Code
OverallELO: 1,323
#105