DeepSeek-R1-Lite PreviewvsDeepSeek-V4-Flash
DeepSeek-R1-Lite Preview | DeepSeek-V4-Flash | |
|---|---|---|
| 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. | — | 18% |
Competitive coding LiveCodeBenchCoding problems published so recently the AI can't have seen them in training — a contamination-free test of raw programming skill. Higher is better. | — | 91.6% |
Science GPQA DiamondGraduate-level science questions in biology, physics, and chemistry — hard enough that subject-matter PhDs score around 65%. Higher is better. | — | 88.1% |
| Timeline | ||
| Release gap | DeepSeek-R1-Lite Preview shipped 520 days before DeepSeek-V4-Flash | |
| Overview | ||
| Company | DeepSeek | DeepSeek |
| Release date | Nov 20 2024 | Apr 24 2026 |
| Access | Open Weight | Open Weight |
Which is better: DeepSeek-R1-Lite Preview or DeepSeek-V4-Flash?
DeepSeek-R1-Lite Preview and DeepSeek-V4-Flash don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. DeepSeek-R1-Lite Preview shipped 520 days before DeepSeek-V4-Flash, 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 — DeepSeek-R1-Lite Preview and DeepSeek-V4-Flash don't publish scores on any of the same benchmarks.
Frequently asked questions
DeepSeek-R1-Lite Preview was released by DeepSeek on Nov 20 2024.
DeepSeek-V4-Flash was released by DeepSeek on Apr 24 2026.
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