OpenAI o3 vs xAI Grok‑1 — side-by-side specs.
OpenAI o3 | xAI Grok‑1 | |
|---|---|---|
| Overview | ||
| Company | OpenAI | xAI |
| Release date | Apr 16 2025 | Nov 3 2023 |
| Model type | — | — |
| Open source | No | Yes |
| Specifications | ||
Parameters | — | — |
Context window | — | — |
| Benchmarks | ||
| Timeline | ||
| Release gap | Grok‑1 shipped 530 days before o3 | |
o3 and Grok‑1 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Grok‑1 shipped 530 days before o3, so benchmark comparisons should account for the intervening progress.
Grok‑1 is an open-source / open-weight model; o3 is proprietary.
Direct benchmark comparisons are unavailable — o3 and Grok‑1 don't publish scores on any of the same benchmarks.