Kimi K3 vs Claude Sonnet 4.6 Thinking
Both have similar output pricing, while Kimi K3 offers a larger context window. Choose Kimi K3 or Claude Sonnet 4.6 Thinking based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | Kimi K3 | Claude Sonnet 4.6 Thinking |
|---|---|---|
| Provider | MoonshotAI | NanoGPT |
| Input / 1M tokens | $0.45 | $3.00 |
| Output / 1M tokens | $15.00 | $15.00 |
| Context window | 1M | 1M |
| Parameters | — | — |
| Open weights | — | No |
| Released | — | Feb 2026 |
| LMArena (Chatbot Arena) Elo score | 1476 | — |
| LMArena WebDev Elo score | 1655 | — |
| Epoch Capabilities Index score | 157 | — |
| GPQA Diamond score | 93.1 | — |
| LiveBench score | — | 75.7 |
FAQ
Is Kimi K3 or Claude Sonnet 4.6 Thinking cheaper?
Kimi K3 and Claude Sonnet 4.6 Thinking have comparable output pricing.
Which has the larger context window, Kimi K3 or Claude Sonnet 4.6 Thinking?
Kimi K3 has the larger context window (1M tokens).
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.