GPT-5.5 is the newer model, released after Grok 4.1 Fast.
| Spec | GPT-5.5 | Grok 4.1 Fast |
|---|---|---|
| Input price | $5/M tokens | — |
| Output price | $30/M tokens | — |
| Context window | 1.1M tokens | — |
| Released | Apr 2026 | Nov 2025 |
Not enough votes to call it. On the specs, nothing separates them.
GPT-5.5 uses 4.4x more hedging
GPT-5.5 is the newer model, released after Grok 4.1 Fast.
| Spec | GPT-5.5 | Grok 4.1 Fast |
|---|---|---|
| Input price | $5/M tokens | — |
| Output price | $30/M tokens | — |
| Context window | 1.1M tokens | — |
| Released | Apr 2026 | Nov 2025 |
Not enough votes to call it. On the specs, nothing separates them.
GPT-5.5 uses 4.4x more hedging