Pairwise benchmark snapshot · Aug 16, 2026
In this head-to-head showdown, Claude Sonnet 5 delivers higher overall intelligence and human-preferred responses (Elo 1,556 vs 1,536), while Claude Sonnet 5 leads in SWE-bench software engineering benchmarks (73.8%), while DeepSeek V4 Pro is more budget-friendly at $1.6/1M per 1M output tokens, while Claude Sonnet 5 provides faster response streaming (118 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
Anthropic workhorse. Official $2/$10 per 1M tokens made permanent on Aug 10 2026.
Open-weight-adjacent DeepSeek flagship. High reasoning density per dollar.
Currently comparing Claude Sonnet 5 vs DeepSeek V4 Pro. Alternative family tiers available.
Simulate accuracy gains vs added response time & token cost
Reasoning models “think before answering” by generating internal reasoning tokens. Higher effort improves math, coding, and logic accuracy, but increases response delay and token costs.
Δ 20 Arena Elo pts
118 tok/s
$1.6 / 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 5 | DeepSeek V4 Pro | Advantage Delta |
|---|---|---|---|
| Preference Elo | +20 | ||
| Coding Elo | +18 | ||
| LiveBench | +0.3% | ||
| SWE-bench | +2.2% | ||
| GPQA Diamond | +1.2% | ||
| Time to first token | +235 ms | ||
| Output speed | 118 tok/s | 70 tok/s | +48 tok/s |
| Input price | $0.4/1M | +$1.6/1M | |
| Output price | $1.6/1M | +$8.4/1M | |
| Context window | +840k |
Simulate monthly production API costs in USD (US Dollar).
DeepSeek V4 Pro is estimated to save $182.00/month ($2,184/year).
Higher SWE-bench (73.8%).
Lower output list price ($1.6/1M).
Lower TTFT (175 ms).
Larger window (1M).
Claude Sonnet 5 is the side marked multimodal in the catalog.
| Target Workload | Recommended Pick | Evaluation Rationale |
|---|---|---|
| Repo / coding agents | Claude Sonnet 5 | Higher SWE-bench (73.8%). |
| High-volume chat | DeepSeek V4 Pro | Lower output list price ($1.6/1M). |
| Voice / low-latency UI | Claude Sonnet 5 | Lower TTFT (175 ms). |
| Long-document RAG | Claude Sonnet 5 | Larger window (1M). |
| Screenshots / vision | Claude Sonnet 5 | Claude Sonnet 5 is the side marked multimodal in the catalog. |
Usually Sonnet 5 vs Opus 5. Coding delta versus output $/1M. The workhorse question.
Aug 10 2026 made the $2/$10 list permanent. Sonnet is the default Claude unless the repo is actually on fire.
Top DeepSeek vs top Anthropic Elo. Usually V4 Pro vs Opus 5. License and invoice decide as much as Elo.
2026-06 open-weight-adjacent flagship. The usual cheap-vs-Claude question starts here.
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Verified Head-to-Head Telemetry
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