Verdict
Claude 3.5 Sonnet (October 2024) leads 5–3 across 8 shared benchmarks.
Claude 3.5 Sonnet (October 2024) 5 · DeepSeek-V3 3 · higher isn't always better — check the caveats below.
Reported scores — protocols may differ. How we compare
Math: DeepSeek-V3 leads 2–1 across 3 shared math benchmarks (largest gap: MATH level 5, 64.85 vs 56.95 — single evaluator).
Reasoning: Evenly split 1–1 across 2 shared reasoning benchmarks (largest gap: SimpleBench, 29.68 vs 2.68 — single evaluator).
Vendor claims — compare against the measured scores above. A claim is what a developer says about its own model, not an independent measurement.
No vendor claims on file for Claude 3.5 Sonnet (October 2024).
Coding
“DeepSeek-V3 achieves the best performance on most benchmarks, especially on math and code tasks.”
General
“At an economical cost of only 2.664M H800 GPU hours, we complete the pre-training of DeepSeek-V3 on 14.8T tokens, producing the currently strongest open-source base model.”
“DeepSeek-V3 outperforms other open-source models and achieves performance comparable to leading closed-source models.”
Reasoning
“Our pipeline elegantly incorporates the verification and reflection patterns of R1 into DeepSeek-V3 and notably improves its reasoning performance.”
Claude 3.5 Sonnet (October 2024) leads 5–3 across 8 shared benchmarks. Claude 3.5 Sonnet (October 2024) leads 5 benchmarks and DeepSeek-V3 leads 3. Higher isn't always better — see the integrity caveats on each benchmark.
Claude 3.5 Sonnet (October 2024) and DeepSeek-V3 have 8 benchmarks in common in our data — those are the only rows where a direct, apples-to-apples comparison is drawn.
DeepSeek-V3 leads math 2–1.