MoonshotAI: Kimi K2 0905

MoonshotAI: Kimi K2 0905

moonshotai · Released Sep 4, 2025 Specialist
60.3
Our Score

Performance Profile

Intelligence5.6Technical5.5Value7.5Content5.5
Intelligence 5.6/10
Technical 5.5/10
Content 5.5/10
Value 7.5/10

Kimi K2 0905 is the September update of Kimi K2 0711. It is a large-scale Mixture-of-Experts (MoE) language model developed by Moonshot AI, featuring 1 trillion total parameters with 32..

$0.40 / 1M
Input Price
$2.00 / 1M
Output Price
262,144 tokens
Context Window
262,144 tokens
Max Output

Capabilities

Tool Use Function Calling

Architecture

ModalityText → Text
TokenizerOther

Performance Indices

Source: Artificial Analysis

30.9 Intelligence Index
25.9 Coding Index
48.5 Agentic Index
57.3 Math Index

Benchmark Scores

Intelligence

GPQA Diamond 76.7% Graduate-level scientific reasoning
HLE 6.3% Humanity's Last Exam
MMLU Pro 81.9% Multi-task language understanding
AIME 2025 57.3% Competition mathematics (2025)
SciCode 30.7% Scientific computing

Technical

LiveCodeBench 61% Live coding evaluation
TerminalBench Hard 23.5% Agentic terminal tasks
τ²-Bench 73.4% Conversational agent benchmark

Content

IFBench 41.7% Instruction following
LCR 52.3% Long-context reasoning

Benchmark data from Artificial Analysis and Hugging Face

How does MoonshotAI: Kimi K2 0905 stack up?

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Model Information

OpenRouter ID moonshotai/kimi-k2-0905
Providermoonshotai
Release Date September 4, 2025
Context Length262,144 tokens
Max Completion262,144 tokens
Status Active

Pricing

Token Type Cost per 1M tokens Cost per 1K tokens
Input $0.40 $0.000400
Output $2.00 $0.002000

Live Performance

Live endpoint metrics — refreshed every 30 minutes.

99.8%
Avg Uptime
300ms
Best Latency (TTFT)
136.5 tok/s
Best Throughput
4/4
Active Endpoints
Available via: SiliconFlow, Novita, AtlasCloud, Groq

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