Grok 4.20 0309 v2 vs Llama 3.1 405B Instruct
xAI vs Meta — benchmarks, pricing, and capabilities side by side.
- •Grok 4.20 0309 v2 has the higher intelligence index (91.1 vs 60.9)
- •Llama 3.1 405B Instruct is cheaper ($0.89 vs $2.00 per 1M input)
- •Grok 4.20 0309 v2 is faster
| Grok 4.20 0309 v2 | Llama 3.1 405B Instruct | |
|---|---|---|
| Intelligence index | 91.1 | 60.9 |
| Developer | xAI | Meta |
| Type | LLM | LLM |
| Access | — | Open weights |
| Context window | — | 128,000 tokens |
| Input price | $2.00 / 1M | $0.89 / 1M |
| Output price | $6.00 / 1M | $0.89 / 1M |
| Speed | 105 tok/s | 100 tok/s |
| Released | April 7, 2026 | July 23, 2024 |
| Parameters | — | 405000000000 |
| Input modalities | — | — |
| Output modalities | — | — |
Shared benchmarks
Grok 4.20 0309 v2
Llama 3.1 405B Instruct
GPQA Diamond
91.1
50.7
Humanity’s Last Exam
32.2
4.2