Grok 4.20 Non-Reasoning (Vertex AI (OpenAI-compatible)) vs Kimi K2.5
Both have similar output pricing, while Grok 4.20 Non-Reasoning (Vertex AI (OpenAI-compatible)) offers a larger context window. Choose Grok 4.20 Non-Reasoning (Vertex AI (OpenAI-compatible)) or Kimi K2.5 based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | Grok 4.20 Non-Reasoning (Vertex AI (OpenAI-compatible)) | Kimi K2.5 |
|---|---|---|
| Provider | LLM Gateway | MoonshotAI |
| Input / 1M tokens | $1.25 | $0.50 |
| Output / 1M tokens | $2.50 | $2.50 |
| Context window | 2M | 262K |
| Parameters | — | 1T |
| Open weights | No | Yes |
| Released | Mar 2026 | Jan 2026 |
| LiveBench score | — | 69.2 |
| SWE-bench Multilingual score | — | 67.3 |
| SWE-bench Verified score | — | 70.8 |
| Epoch Capabilities Index score | — | 148 |
| LMArena (Chatbot Arena) Elo score | — | 1445 |
| LMArena WebDev Elo score | — | 1436 |
| LMArena Vision Elo score | — | 1269 |
FAQ
Is Grok 4.20 Non-Reasoning (Vertex AI (OpenAI-compatible)) or Kimi K2.5 cheaper?
Grok 4.20 Non-Reasoning (Vertex AI (OpenAI-compatible)) and Kimi K2.5 have comparable output pricing.
Which has the larger context window, Grok 4.20 Non-Reasoning (Vertex AI (OpenAI-compatible)) or Kimi K2.5?
Grok 4.20 Non-Reasoning (Vertex AI (OpenAI-compatible)) has the larger context window (2M tokens).
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.