Pairwise benchmark snapshot · Aug 1, 2026
In this head-to-head showdown, Claude Sonnet 4 delivers higher overall intelligence and human-preferred responses (Elo 1,455 vs 1,365), while Claude Sonnet 4 leads in SWE-bench software engineering benchmarks (62.8%), while DeepSeek Coder V2 is more budget-friendly at $0.28/1M per 1M output tokens, while Claude Sonnet 4 provides faster response streaming (92 tok/s). Review the complete breakdown below to determine which model best fits your performance and budget requirements.
10 direct benchmark disciplines evaluated across capability, speed, and cost
First Sonnet 4 generation. Bridge between 3.5/3.7 and Sonnet 5.
DeepSeek open-weight Mixture-of-Experts coding model supporting 338 programming languages and 128k context.
Δ 90 Arena Elo pts
92 tok/s
$0.28 / 1M output
Relative percentile scores computed across all active models in the benchmark catalog.
Comparing top Western standard models with China's leading frontier rival across 6 skill dimensions. Tap any spoke or dot to inspect.
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 Sonnet 4 | DeepSeek Coder V2 | Advantage Delta |
|---|---|---|---|
| Preference Elo | +90 | ||
| Coding Elo | +26 | ||
| LiveBench | +4.6% | ||
| SWE-bench | +2.3% | ||
| GPQA Diamond | +6.2% | ||
| Time to first token | +70 ms | ||
| Output speed | 92 tok/s | 75 tok/s | +17 tok/s |
| Input price | $0.14/1M | +$2.86/1M | |
| Output price | $0.28/1M | +$14.72/1M | |
| Context window | +72k |
Simulate monthly production API costs in USD (US Dollar).
DeepSeek Coder V2 is estimated to save $320.90/month ($3,851/year).
Higher SWE-bench (62.8%).
Lower output list price ($0.28/1M).
Lower TTFT (220 ms).
Larger window (200k).
Claude Sonnet 4 is the side marked multimodal in the catalog.
| Target Workload | Recommended Pick | Evaluation Rationale |
|---|---|---|
| Repo / coding agents | Claude Sonnet 4 | Higher SWE-bench (62.8%). |
| High-volume chat | DeepSeek Coder V2 | Lower output list price ($0.28/1M). |
| Voice / low-latency UI | Claude Sonnet 4 | Lower TTFT (220 ms). |
| Long-document RAG | Claude Sonnet 4 | Larger window (200k). |
| Screenshots / vision | Claude Sonnet 4 | Claude Sonnet 4 is the side marked multimodal in the catalog. |
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Verified Head-to-Head Telemetry
