Grok 4.20 0309 vs Hermes 4 - Llama-3.1 405B
xAI vs Nous Research — benchmarks, pricing, and capabilities side by side.
- •Grok 4.20 0309 has the higher intelligence index (88.5 vs 73.5)
- •Hermes 4 - Llama-3.1 405B is cheaper ($1.00 vs $2.00 per 1M input)
- •Grok 4.20 0309 is faster
| Grok 4.20 0309 | Hermes 4 - Llama-3.1 405B | |
|---|---|---|
| Intelligence index | 88.5 | 73.5 |
| Developer | xAI | Nous Research |
| Type | LLM | LLM |
| Access | — | — |
| Context window | — | — |
| Input price | $2.00 / 1M | $1.00 / 1M |
| Output price | $6.00 / 1M | $3.00 / 1M |
| Speed | 97 tok/s | 34 tok/s |
| Released | March 10, 2026 | August 27, 2025 |
| Parameters | — | — |
| Input modalities | — | — |
| Output modalities | — | — |
Shared benchmarks
Grok 4.20 0309
Hermes 4 - Llama-3.1 405B
GPQA Diamond
88.5
72.7
Humanity’s Last Exam
30
10.3