Claude 3.5 Sonnet (upgraded) vs DeepSeek R1-0528
Anthropic Claude 3.5 Sonnet (upgraded) | DeepSeek DeepSeek R1-0528 | |
|---|---|---|
| Overview | ||
| Company | Anthropic | DeepSeek |
| Release date | Oct 22 2024 | May 28 2025 |
| Access | Proprietary | Open Weight |
| 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% |
Coding SWE-Bench VerifiedReal coding tasks pulled from open-source projects — the AI has to find and fix actual bugs. A human-checked version of the original SWE-Bench. Higher is better. | 49% | — |
| Timeline | ||
| Release gap | Claude 3.5 Sonnet (upgraded) shipped 218 days before DeepSeek R1-0528 | |
Which is better: Claude 3.5 Sonnet (upgraded) or DeepSeek R1-0528?
Claude 3.5 Sonnet (upgraded) and DeepSeek R1-0528 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Claude 3.5 Sonnet (upgraded) shipped 218 days before DeepSeek R1-0528, so benchmark comparisons should account for the intervening progress.
Claude 3.5 Sonnet (upgraded) is proprietary, while DeepSeek R1-0528 is open weight.
Direct benchmark comparisons are unavailable — Claude 3.5 Sonnet (upgraded) and DeepSeek R1-0528 don't publish scores on any of the same benchmarks.
Frequently asked questions
Claude 3.5 Sonnet (upgraded) was released by Anthropic on Oct 22 2024.
DeepSeek R1-0528 was released by DeepSeek on May 28 2025.
Claude 3.5 Sonnet (upgraded) is a proprietary model released by Anthropic. DeepSeek R1-0528 is an open weight model released by DeepSeek.