Grok 4.20 0309 vs Llama 3.1 405B
xAI vs Meta — benchmarks, pricing, and capabilities side by side.
| Grok 4.20 0309 | Llama 3.1 405B | |
|---|---|---|
| Intelligence index | 88.5 | — |
| Developer | xAI | Meta |
| Type | LLM | LLM |
| Access | — | Open weights |
| Context window | — | 128,000 tokens |
| Input price | $2.00 / 1M | — |
| Output price | $6.00 / 1M | — |
| Speed | 97 tok/s | — |
| Released | March 10, 2026 | July 23, 2024 |
| Parameters | — | 405B |
| Input modalities | — | Text |
| Output modalities | — | Text |