DeepSeek V3 Base vs o3
DeepSeek DeepSeek V3 Base | OpenAI o3 | |
|---|---|---|
| Overview | ||
| Company | DeepSeek | OpenAI |
| Release date | Dec 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. | — | 26% |
| Timeline | ||
| Release gap | DeepSeek V3 Base shipped 136 days before o3 | |
Which is better: DeepSeek V3 Base or o3?
DeepSeek V3 Base and o3 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. DeepSeek V3 Base shipped 136 days before o3, so benchmark comparisons should account for the intervening progress.
DeepSeek V3 Base is open weight, while o3 is proprietary.
Direct benchmark comparisons are unavailable — DeepSeek V3 Base and o3 don't publish scores on any of the same benchmarks.
Frequently asked questions
DeepSeek V3 Base was released by DeepSeek on Dec 2024.
o3 was released by OpenAI on Apr 16 2025.
DeepSeek V3 Base is an open weight model released by DeepSeek. o3 is a proprietary model released by OpenAI.
Other comparisons
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