Kimi K2 with always-on extended reasoning for complex problem solving.
Anthropic's fifth-generation Sonnet — near-Opus intelligence at Sonnet speed and price.
No shared demos for these models yet.
No captured outputs for these models yet.
Both Kimi K2 Thinking and Claude Sonnet 5 are capable AI models. The best choice depends on your specific use case: consider pricing, context window, speed, and which capabilities (vision, reasoning, audio) you need.
Kimi K2 Thinking has a lower blended cost. Kimi K2 Thinking: $0.60 input / $2.50 output. Claude Sonnet 5: $2.00 input / $10.00 output.
Claude Sonnet 5 has a larger context window: Kimi K2 Thinking supports 262K tokens vs Claude Sonnet 5 at 1M tokens.
Claude Sonnet 5 supports vision/image input, but Kimi K2 Thinking does not.
Key differences: Kimi K2 Thinking is significantly cheaper; only Claude Sonnet 5 supports vision input. Compare full specs on this page.
If cost is your priority, choose the cheaper option. If you need the highest intelligence for complex tasks, pick the higher-scoring model. For long documents or codebases, choose the larger context window. You can try both Kimi K2 Thinking and Claude Sonnet 5 for free on idapt.app to see which performs better for your specific needs.