Compare AI models
| Specifications | ||
Context windowHow much information the model can work with in one request, measured in tokens — pieces of words or other data. This includes your question, attachments, conversation and reply. Limits can vary by model variant and provider. | 200k | 2M |
| These models have no shared benchmark scores. | ||
BullshitBench v2Nonsense detection — Given a confidently-worded but nonsensical prompt, does the AI spot that it makes no sense and push back — instead of playing along and inventing an answer? The score is how often it clearly called out the nonsense. Higher is better. | — | 19% |
| Overview | ||
| Company | OpenAI | SpaceXSI |
| Release date | May 16 2025 | Nov 19 2025 |
| Access | Closed | Closed |
| Model details | View model | View model |
Other comparisons
codex-mini-latestvsClaude Fable 5.2Grok 4.1 FastvsClaude Fable 5.2codex-mini-latestvsGemini 4 CarbonGrok 4.1 FastvsGemini 4 Carboncodex-mini-latestvsMuse EmberGrok 4.1 FastvsMuse Embercodex-mini-latestvsDeepSeek-V4.1-Flash-1017Grok 4.1 FastvsDeepSeek-V4.1-Flash-1017codex-mini-latestvsMistral Large 4Grok 4.1 FastvsMistral Large 4codex-mini-latestvsKimi K3.1 ProGrok 4.1 FastvsKimi K3.1 ProFrequently asked questions
codex-mini-latest and Grok 4.1 Fast don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. codex-mini-latest shipped 187 days before Grok 4.1 Fast, so benchmark comparisons should account for the intervening progress.
Context windows are 200k (codex-mini-latest) vs 2M (Grok 4.1 Fast).
Direct benchmark comparisons are unavailable — codex-mini-latest and Grok 4.1 Fast don't publish scores on any of the same benchmarks.