Kimi K2 Thinking vs. Claude 3.5 Sonnet (Oct '24)
Comparison between Kimi K2 Thinking and Claude 3.5 Sonnet (Oct '24) across intelligence, price, speed, context window and more.
For details relating to our methodology, see our Methodology page.
| Intelligence | |||
|---|---|---|---|
| Intelligence Index | 22* | 8* | |
| Humanity's Last Exam | 24% | 4% | |
| CritPt | 3% | ||
| AA-Omniscience | −21 | ||
| AA-LCR v1.1 | 72% | ||
| Cost | |||
| Price per 1M Tokens | $0.79 | $2.31 | |
| Input Price per 1M Tokens | $0.60 | $3.00 | |
| Output Price per 1M Tokens | $2.50 | $15.00 | |
| Cache Hit Price per 1M Tokens | $0.30 | ||
| Token Use | |||
| Performance | |||
| Output Speed | 113 tokens/s | ||
| Time to First Token | 1.42s | ||
| Time to First Answer Token | 19.11s | ||
| End-to-End Response Time | 23.53s | ||
| Technical specifications | |||
| Context Window | 256k tokens~384 A4 pages of size 12 Arial font | 200k tokens~300 A4 pages of size 12 Arial font | |
| Release Date | November 2025 | October 2024 | |
| Knowledge Cutoff | April 2024 | ||
| Total parameters | 1T | ||
| Active parameters | 32B | ||
| Reasoning | Yes | No | |
| Input modality | Supports: text | Supports: text and image | |
| Output modality | Supports: text | Supports: text | |
| Open Source (Weights) | No | ||
| License | |||
| License Supports Commercial Use Without Restrictions | Yes | ||
* Estimated
Highlights
IntelligenceUpdated
Artificial Analysis Intelligence Index
Artificial Analysis Intelligence Index by Open Weights / Proprietary
Intelligence Evaluations
Agentic knowledge work, (Elo-500)/2000
Agentic real-world work tasks, (Elo-500)/2000
Agentic SaaS workflows
Agentic coding & terminal use
Coding
Reasoning & knowledge
Professional document reasoning, All-pass
Physics reasoning
Knowledge
1 - hallucination rate
Long context reasoning
Legal agentic work, criterion pass rate
Agentic business operations
Quantitative analysis on spreadsheets & documents
Instruction following
Agentic tool use
Long-horizon agentic tasks
Kubernetes incident root-cause analysis
Visual reasoning
AA-Omniscience
AA-Omniscience Index
Openness Index
Artificial Analysis Openness Index: Score
Intelligence Index Comparisons
Intelligence Index vs. Cost per Intelligence Index Task
Cost
Cost per Intelligence Index Task
Cost to Run Artificial Analysis Intelligence Index
Pricing: Cache Hit, Input, and Output
Context Window
Context Window
Speed
Measured by Output Speed (tokens per second)
Output Speed
Time per Intelligence Index Task
Latency
Measured by Time (seconds) to First Token
Latency: Time To First Answer Token
End-to-End Response Time
Seconds to output 500 tokens, calculated based on time to first token, 'thinking' time for reasoning models, and output speed
End-to-End Response Time
Model Size (Open Weights Models Only)
Model Size: Total and Active Parameters
Frequently Asked Questions
Kimi K2 Thinking is more intelligent. Kimi K2 Thinking scores 22 (estimated), compared with Claude 3.5 Sonnet (Oct '24) at 8 (estimated) on the Artificial Analysis Intelligence Index.
Kimi K2 Thinking is cheaper. Kimi K2 Thinking costs $0.79 per 1M tokens, compared with Claude 3.5 Sonnet (Oct '24) at $2.31 per 1M tokens (7:2:1 cache hit/input/output ratio).
Kimi K2 Thinking has a larger context window. Kimi K2 Thinking supports 260k tokens, compared with Claude 3.5 Sonnet (Oct '24) at 200k tokens.