LLM Comparison
Grok 4.20 vs Kimi K2.5
Side-by-side specs, pricing & capabilities · Updated September 2026
Price vs Intelligence
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2/6 modelsSame tier:
| Organization | ||
| OpenTools Score | 72 18.0 | 62 58.9 |
| Family | Grok | Kimi |
| Status | Current | Current |
| Release Date | Mar 2026 | Jan 2026 |
| Context Window | 2.0M tokens | 262K tokens |
| Input Price | $2.00/M tokens | $0.38/M tokens |
| Output Price | $6.00/M tokens | $1.72/M tokens |
| Pricing Notes | Cache read: $0.2000/M tokens | Cache read: $0.1913/M tokens |
| Capabilities | textvisioncode | textvisioncode |
| Max Output | — | 66K tokens |
| API Identifier | x-ai/grok-4.20 | moonshotai/kimi-k2.5 |
| Benchmarks | ||
| GPQA Diamond | 91.1111artificial-analysis | 87.6https://huggingface.co/moonshotai/Kimi-K2.5 |
| MMLU-Pro | — | 87.1https://huggingface.co/moonshotai/Kimi-K2.5 |
| Terminal-Bench 2.1 | — | 45.6929artificial-analysis |
| View Grok 4.20 | View Kimi K2.5 | |
Cost Calculator
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| Model | Input | Output | Total / mo | vs Best |
|---|---|---|---|---|
| Kimi K2.5Cheapest | $0.38 | $0.86 | $1.24 | — |
| Grok 4.20 | $2.00 | $3.00 | $5.00 | +302% |
xAI
Grok 4.20
Grok 4.20 is a multimodal llm from xAI. Supports up to 2,000,000 token context window. Available from $2.00/M input tokens.
Moonshot AI
Kimi K2.5
Kimi K2.5 is a multimodal llm from Moonshot AI. Supports up to 262,144 token context window. Available from $0.38/M input tokens.
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