DeepSeek R1-0528 vs Grok 4 Heavy
DeepSeek DeepSeek R1-0528 | SpaceXAI Grok 4 Heavy | |
|---|---|---|
| Overview | ||
| Company | DeepSeek | SpaceXAI |
| Release date | May 28 2025 | Jul 9 2025 |
| Access | Open Weight | Proprietary |
| 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. | 8% | — |
| Timeline | ||
| Release gap | DeepSeek R1-0528 shipped 42 days before Grok 4 Heavy | |
Which is better: DeepSeek R1-0528 or Grok 4 Heavy?
DeepSeek R1-0528 and Grok 4 Heavy don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. DeepSeek R1-0528 shipped 42 days before Grok 4 Heavy, so benchmark comparisons should account for the intervening progress.
DeepSeek R1-0528 is open weight, while Grok 4 Heavy is proprietary.
Direct benchmark comparisons are unavailable — DeepSeek R1-0528 and Grok 4 Heavy don't publish scores on any of the same benchmarks.
Frequently asked questions
DeepSeek R1-0528 was released by DeepSeek on May 28 2025.
Grok 4 Heavy was released by SpaceXAI on Jul 9 2025.
DeepSeek R1-0528 is an open weight model released by DeepSeek. Grok 4 Heavy is a proprietary model released by SpaceXAI.
Other comparisons
DeepSeek R1-0528 vs Claude Sonnet 5Grok 4 Heavy vs Claude Sonnet 5DeepSeek R1-0528 vs GPT-5.6 SolGrok 4 Heavy vs GPT-5.6 SolDeepSeek R1-0528 vs Gemini OmniGrok 4 Heavy vs Gemini OmniDeepSeek R1-0528 vs Muse Spark 1.1Grok 4 Heavy vs Muse Spark 1.1DeepSeek R1-0528 vs Mistral Medium 3.5Grok 4 Heavy vs Mistral Medium 3.5DeepSeek R1-0528 vs Kimi K2.7 CodeGrok 4 Heavy vs Kimi K2.7 Code