Grok 4.20 0309 v2 vs o3-mini
xAI vs OpenAI — benchmarks, pricing, and capabilities side by side.
- •Grok 4.20 0309 v2 has the higher intelligence index (91.1 vs 64.1)
- •o3-mini is cheaper ($1.10 vs $2.00 per 1M input)
- •o3-mini is faster
| Grok 4.20 0309 v2 | o3-mini | |
|---|---|---|
| Intelligence index | 91.1 | 64.1 |
| Developer | xAI | OpenAI |
| Type | LLM | LLM |
| Access | — | API only |
| Context window | — | 200,000 tokens |
| Input price | $2.00 / 1M | $1.10 / 1M |
| Output price | $6.00 / 1M | $4.40 / 1M |
| Speed | 105 tok/s | 115 tok/s |
| Released | April 7, 2026 | January 31, 2025 |
| Parameters | — | — |
| Input modalities | — | Text |
| Output modalities | — | Text |
Shared benchmarks
Grok 4.20 0309 v2
o3-mini
GPQA Diamond
91.1
77.2
Humanity’s Last Exam
32.2
12.3