Kimi K2.5 vs Grok 4.20 (Non-Reasoning)
Both have similar output pricing, while Grok 4.20 (Non-Reasoning) offers a larger context window. Choose Kimi K2.5 or Grok 4.20 (Non-Reasoning) based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | Kimi K2.5 | Grok 4.20 (Non-Reasoning) |
|---|---|---|
| Provider | MoonshotAI | xAI |
| Input / 1M tokens | $0.50 | $1.25 |
| Output / 1M tokens | $2.50 | $2.50 |
| Context window | 262K | 1M |
| Parameters | 1T | — |
| Open weights | Yes | No |
| Released | Jan 2026 | Mar 2026 |
| LiveBench score | 69.2 | 37.9 |
| SWE-bench Verified score | 70.8 | — |
| SWE-bench Multilingual score | 67.3 | — |
| LMArena (Chatbot Arena) Elo score | 1445 | — |
| LMArena WebDev Elo score | 1436 | — |
| LMArena Vision Elo score | 1269 | — |
| Epoch Capabilities Index score | 148 | — |
FAQ
Is Kimi K2.5 or Grok 4.20 (Non-Reasoning) cheaper?
Kimi K2.5 and Grok 4.20 (Non-Reasoning) have comparable output pricing.
Which has the larger context window, Kimi K2.5 or Grok 4.20 (Non-Reasoning)?
Grok 4.20 (Non-Reasoning) 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.