Claude Sonnet 3.5 vs Kimi K3
Kimi K3 is cheaper on output tokens, while Kimi K3 offers a larger context window. Choose Claude Sonnet 3.5 or Kimi K3 based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | Claude Sonnet 3.5 | Kimi K3 |
|---|---|---|
| Provider | Anthropic | MoonshotAI |
| Input / 1M tokens | $3.00 | $0.30 |
| Output / 1M tokens | $15.00 | $11.94 |
| Context window | 200K | 1M |
| Parameters | — | — |
| Open weights | No | — |
| Released | Jun 2024 | — |
| SWE-bench Multimodal score | 12.2 | — |
| GPQA Diamond score | — | 93.1 |
| Epoch Capabilities Index score | — | 157 |
| LMArena (Chatbot Arena) Elo score | — | 1476 |
| LMArena WebDev Elo score | — | 1655 |
FAQ
Is Claude Sonnet 3.5 or Kimi K3 cheaper?
Kimi K3 is cheaper on output tokens ($11.94 vs $15.00 per 1M).
Which has the larger context window, Claude Sonnet 3.5 or Kimi K3?
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.