Kimi K3 vs Grok 3
Kimi K3 is cheaper on output tokens, while Kimi K3 offers a larger context window. Choose Kimi K3 or Grok 3 based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | Kimi K3 | Grok 3 |
|---|---|---|
| Provider | MoonshotAI | Poe |
| Input / 1M tokens | $0.30 | $3.00 |
| Output / 1M tokens | $11.94 | $15.00 |
| Context window | 1M | 131K |
| Parameters | — | 3T |
| Open weights | — | No |
| Released | — | Apr 2025 |
| GPQA Diamond score | 93.1 | — |
| Epoch Capabilities Index score | 157 | 138 |
| LMArena (Chatbot Arena) Elo score | 1475 | — |
| LMArena WebDev Elo score | 1655 | — |
| Aider Polyglot score | — | 53.3 |
FAQ
Is Kimi K3 or Grok 3 cheaper?
Kimi K3 is cheaper on output tokens ($11.94 vs $15.00 per 1M).
Which has the larger context window, Kimi K3 or Grok 3?
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.