Pairwise benchmark snapshot · Aug 17, 2026
In this head-to-head showdown, DeepSeek V3 delivers higher overall intelligence and human-preferred responses (Elo 1,310 vs 1,280), while Claude 3.5 Sonnet leads in SWE-bench software engineering benchmarks (49%), while DeepSeek V3 is more budget-friendly at $1.03/1M per 1M output tokens, while Claude 3.5 Sonnet provides faster response streaming (80 tok/s). Review the complete breakdown below to determine which model best fits your performance and budget requirements.
2024 workhorse. Still a high-intent compare against GPT-4o.
Δ 30 Arena Elo pts
80 tok/s
$1.0287 / 1M output
Relative percentile scores computed across all active models in the benchmark catalog.
Each spoke is a skill. Farther from the center is better (0–100th percentile). Tap any dot to inspect details.
Category wins across reasoning intelligence, generation speed, and token cost.
Preference Elo, Coding proficiency, SWE-bench & LiveBench accuracy
Generation throughput and time to first token responsiveness
Cost per million tokens and max context window length
| Benchmark | Claude 3.5 Sonnet | DeepSeek V3 | Advantage Delta |
|---|---|---|---|
| Preference Elo | DeepSeek V3 (+30) | ||
| LiveBench | DeepSeek V3 (+3.3%) | ||
| SWE-bench | Claude 3.5 Sonnet (+0.4%) | ||
| GPQA Diamond | Claude 3.5 Sonnet (+5.9%) | ||
| Time to first token | Claude 3.5 Sonnet (+100 ms) | ||
| Output speed | 80 tok/s | 66 tok/s | Claude 3.5 Sonnet (+14 tok/s) |
| Input price | $0.2574/1M | DeepSeek V3 (+$2.74/1M) | |
| Output price | $1.03/1M | DeepSeek V3 (+$13.97/1M) | |
| Context window | Claude 3.5 Sonnet (+36k) |
Simulate monthly production API costs in USD (US Dollar).
DeepSeek V3 is estimated to save $305.56/month ($3,667/year).
Higher SWE-bench (49%).
Lower output list price ($1.03/1M).
Lower TTFT (280 ms).
Larger window (200k).
Claude 3.5 Sonnet is the side marked multimodal in the catalog.
| Target Workload | Recommended Pick | Evaluation Rationale |
|---|---|---|
| Repo / coding agents | Claude 3.5 Sonnet | Higher SWE-bench (49%). |
| High-volume chat | DeepSeek V3 | Lower output list price ($1.03/1M). |
| Voice / low-latency UI | Claude 3.5 Sonnet | Lower TTFT (280 ms). |
| Long-document RAG | Claude 3.5 Sonnet | Larger window (200k). |
| Screenshots / vision | Claude 3.5 Sonnet | Claude 3.5 Sonnet is the side marked multimodal in the catalog. |
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Verified head-to-head card
