MoonshotAI: Kimi K2 0905

Text input Text output
Author's Description

Kimi K2 0905 is the September update of [Kimi K2 0711](moonshotai/kimi-k2). It is a large-scale Mixture-of-Experts (MoE) language model developed by Moonshot AI, featuring 1 trillion total parameters with 32...

Key Specifications
Cost
$$$$
Context
262K
Parameters
32B (Rumoured)
Released
Sep 04, 2025
Speed
Ability
Reliability
Supported Parameters

This model supports the following parameters:

Tool Choice Tools Response Format Temperature Max Tokens Structured Outputs Presence Penalty Stop Top P Frequency Penalty
Features

This model supports the following features:

Structured Outputs Tools Response Format
Performance Summary

MoonshotAI's Kimi K2 0905, an update to the Kimi K2 0711 MoE model, demonstrates exceptional reliability with a 100% success rate across all benchmarks, indicating consistent and stable operation. Its speed performance is moderate, ranking in the 31st percentile, while its pricing is also moderate, placing it in the 40th percentile. The model exhibits perfect accuracy in Hallucinations (Baseline), effectively acknowledging uncertainty, and strong performance in Email Classification (99.0% accuracy) and Instruction Following (72.0% accuracy). These results align with its described improvements in agentic coding and frontend coding, suggesting robust understanding and execution of structured tasks. Its performance in Coding (87.0% accuracy) and Reasoning (78.0% accuracy) is solid, placing it around the 55th and 57th percentiles respectively. However, the model shows weaknesses in General Knowledge (77.0% accuracy, 20th percentile), Ethics (80.0% accuracy, 17th percentile), and Mathematics (53.0% accuracy, 20th percentile), where its accuracy falls into the lower percentiles. Kimi K2 0905's strengths lie in its reliability and specialized capabilities for agentic tasks, while general knowledge and complex ethical/mathematical reasoning present areas for future enhancement.

Model Pricing

Current Pricing

Feature Price (per 1M tokens)
Prompt $0.4
Completion $2

Price History

Available Endpoints
Provider Endpoint Name Context Length Pricing (Input) Pricing (Output)
Moonshot AI
Moonshot AI | moonshotai/kimi-k2-0905 262K $0.4 / 1M tokens $2 / 1M tokens
Moonshot AI
Moonshot AI | moonshotai/kimi-k2-0905 262K $0.4 / 1M tokens $2 / 1M tokens
Together
Together | moonshotai/kimi-k2-0905 262K $0.4 / 1M tokens $2 / 1M tokens
Fireworks
Fireworks | moonshotai/kimi-k2-0905 262K $0.4 / 1M tokens $2 / 1M tokens
Groq
Groq | moonshotai/kimi-k2-0905 262K $1 / 1M tokens $3 / 1M tokens
Novita
Novita | moonshotai/kimi-k2-0905 262K $0.6 / 1M tokens $2.5 / 1M tokens
Chutes
Chutes | moonshotai/kimi-k2-0905 262K $0.4 / 1M tokens $2 / 1M tokens
Parasail
Parasail | moonshotai/kimi-k2-0905 262K $0.4 / 1M tokens $2 / 1M tokens
BaseTen
BaseTen | moonshotai/kimi-k2-0905 262K $0.4 / 1M tokens $2 / 1M tokens
AtlasCloud
AtlasCloud | moonshotai/kimi-k2-0905 262K $0.6 / 1M tokens $2.5 / 1M tokens
SiliconFlow
SiliconFlow | moonshotai/kimi-k2-0905 262K $0.4 / 1M tokens $2 / 1M tokens
DeepInfra
DeepInfra | moonshotai/kimi-k2-0905 131K $0.4 / 1M tokens $2 / 1M tokens
GMICloud
GMICloud | moonshotai/kimi-k2-0905 262K $0.4 / 1M tokens $2 / 1M tokens
WandB
WandB | moonshotai/kimi-k2-0905 128K $0.4 / 1M tokens $2 / 1M tokens
BytePlus
BytePlus | moonshotai/kimi-k2-0905 256K $0.4 / 1M tokens $2 / 1M tokens
Benchmark Results
Benchmark Category Reasoning Strategy Free Executions Accuracy Cost Duration
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