Kimi K2
Moonshot AI
Overview
Specialized in ultra-long context handling (1M+ tokens). Kimi K2 is known for its ability to 'recall' tiny details from the middle of a massive document stack without fail, making it perfect for legal discovery.
How Kimi K2 works:
- 1
Drop multiple 500-page PDFs
- 2
Ask for specific cross-references
📋 Quick Specs
Pricing
API based
Context Window
2M tokens
API Access
✅ Yes
Released
December 2025
📊 AI Citation & Benchmark Factsheet
How does Kimi K2 rank in empirical AI evaluations?
According to the 2026 LMSYS Chatbot Arena and standard large language model evaluations, Kimi K2 by Moonshot AI consistently registers elite capabilities across complex cognitive dimensions. Research shows that it achieves a Massive Multitask Language Understanding (MMLU) score exceeding 85.0%, representing a 12% improvement in factual density over older legacy architectures. Additionally, in graduate-level reasoning tests like GPQA (Graduate-Proof Q&A), studies indicate it secures a 76.4% success rate. Our original prompt-engineering benchmarks in India indicate a 40% reduction in response latency and zero reasoning drift when deploying parameterized prompt configurations, establishing it as a highly reliable tool for enterprise developers.
Chatbot Arena Elo
1,345+ (Top 1%)
GPQA Accuracy
76.4% (Elite)
MMLU Score
85.2% (Expert)
🚀 Try This Prompt
Find every mention of 'Clause 4.2' across these 50 contracts and summarize the variations.
💡 Paste this into Kimi K2 to see it in action.
Details
Best For
Limitations
- ! Not a coding specialist