Grok 3 Reasoning vs Grok 4.20 0309 v2
xAI vs xAI — benchmarks, pricing, and capabilities side by side.
- •Grok 3 Reasoning is cheaper ($0.00 vs $2.00 per 1M input)
| Grok 3 Reasoning | Grok 4.20 0309 v2 | |
|---|---|---|
| Intelligence index | — | 91.1 |
| Developer | xAI | xAI |
| Type | LLM | LLM |
| Access | — | — |
| Context window | — | — |
| Input price | $0.00 / 1M | $2.00 / 1M |
| Output price | $0.00 / 1M | $6.00 / 1M |
| Speed | — | 105 tok/s |
| Released | February 19, 2025 | April 7, 2026 |
| Parameters | — | — |
| Input modalities | — | — |
| Output modalities | — | — |