Kimi K2 Thinking vs Claude 4.5 Sonnet (thinking)
Detailed comparison of capabilities, features, and performance.
Feature
Kimi K2 Thinking
Claude 4.5 Sonnet (thinking)
Model Image
AI Lab
Moonshot
Anthropic
Context Size
256,000 tokens
1,000,000 tokens
Max Output Size
16,384 tokens
64,000 tokens
Frontier Model
No
Yes
Vision Support
No
Yes
Description
Kimi K2 Thinking is the latest, most capable version of open-source thinking model. Starting with Kimi K2, it was built as a thinking agent that reasons step-by-step while dynamically invoking tools.
The latest Claude 4.5 Sonnet model from Anthropic with maximum reasoning enabled, 200k reasoning tokens in 1M context.
Learn more about Kimi K2 Thinking
View detailed specifications and capabilities
View model details →Learn more about Claude 4.5 Sonnet (thinking)
View detailed specifications and capabilities
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