DeepSeek V2.5 vs o4-mini
DeepSeek DeepSeek V2.5 | OpenAI o4-mini | |
|---|---|---|
| Overview | ||
| Company | DeepSeek | OpenAI |
| Release date | Sep 2024 | Apr 16 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 V2.5 shipped 227 days before o4-mini | |
Which is better: DeepSeek V2.5 or o4-mini?
DeepSeek V2.5 and o4-mini don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. DeepSeek V2.5 shipped 227 days before o4-mini, so benchmark comparisons should account for the intervening progress.
DeepSeek V2.5 is open weight, while o4-mini is proprietary.
Direct benchmark comparisons are unavailable — DeepSeek V2.5 and o4-mini don't publish scores on any of the same benchmarks.
Frequently asked questions
DeepSeek V2.5 was released by DeepSeek on Sep 2024.
o4-mini was released by OpenAI on Apr 16 2025.
DeepSeek V2.5 is an open weight model released by DeepSeek. o4-mini is a proprietary model released by OpenAI.
Other comparisons
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