Anthropic's fifth-generation Sonnet — near-Opus intelligence at Sonnet speed and price.
MoonshotAI's large MoE model — 1T total parameters, 32B active.
No shared demos for these models yet.
No captured outputs for these models yet.
Based on the Capability Index, Claude Sonnet 5 scores higher (80.1 vs 78.2). However, "better" depends on your use case — pricing, speed, context window, and specific capability needs all matter.
Kimi K2 has a lower blended cost. Claude Sonnet 5: $2.00 input / $10.00 output. Kimi K2: $0.57 input / $2.30 output.
Claude Sonnet 5 has a larger context window: Claude Sonnet 5 supports 1M tokens vs Kimi K2 at 131K tokens.
Claude Sonnet 5 supports vision/image input, but Kimi K2 does not.
Key differences: Kimi K2 is significantly cheaper; only Claude Sonnet 5 supports vision input; only Claude Sonnet 5 offers extended reasoning mode. 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 Claude Sonnet 5 and Kimi K2 for free on idapt.app to see which performs better for your specific needs.