GPT-4.1 nano vs Grok 4.20 Beta
OpenAI GPT-4.1 nano | SpaceXAI Grok 4.20 Beta | |
|---|---|---|
| Overview | ||
| Company | OpenAI | SpaceXAI |
| Release date | Apr 14 2025 | Feb 17 2026 |
| Access | Proprietary | Proprietary |
| Specifications | ||
Context window | 1M | — |
| Benchmarks | ||
Nonsense detection BullshitBench v2Given 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. | — | 56% |
Abstract reasoning ARC-AGI-2Puzzle-style tests of abstract reasoning and pattern-finding — the kind of thing people find easy but AIs often struggle with. Higher is better. | — | 53.3% |
Community preference Arena Elo (Text)Real people chat with two anonymous AIs side by side and vote for the answer they prefer. Votes become a chess-style Elo rating on arena.ai — it measures which AI people actually like, not test scores. Higher is better. | — | 1475 |
| Timeline | ||
| Release gap | GPT-4.1 nano shipped 309 days before Grok 4.20 Beta | |
Which is better: GPT-4.1 nano or Grok 4.20 Beta?
GPT-4.1 nano and Grok 4.20 Beta don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. GPT-4.1 nano shipped 309 days before Grok 4.20 Beta, so benchmark comparisons should account for the intervening progress.
Published specifications for these two models are limited — see each model page for the latest details.
Direct benchmark comparisons are unavailable — GPT-4.1 nano and Grok 4.20 Beta don't publish scores on any of the same benchmarks.
Frequently asked questions
GPT-4.1 nano was released by OpenAI on Apr 14 2025.
Grok 4.20 Beta was released by SpaceXAI on Feb 17 2026.
Other comparisons
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