Pairwise benchmark snapshot · Aug 16, 2026
In this head-to-head showdown, DeepSeek V4 Flash delivers higher overall intelligence and human-preferred responses (Elo 1,490 vs 1,362), while DeepSeek V4 Flash leads in SWE-bench software engineering benchmarks (71.2%), while DeepSeek V4 Flash is more budget-friendly at $0.28/1M per 1M output tokens. Review the complete breakdown below to determine which model best fits your performance and budget requirements.
9 direct benchmark disciplines evaluated across capability, speed, and cost
Hybrid-reasoning Sonnet from 2025. Kept for historical compare pages.
DeepSeek Jul 31 2026 price-performance SKU. Public listings put it near $0.14/$0.28 per 1M tokens.
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 128 Arena Elo pts
142 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 3.7 Sonnet | DeepSeek V4 Flash | Advantage Delta |
|---|---|---|---|
| Preference Elo | +128 | ||
| Coding Elo | — | — | |
| LiveBench | +9.4% | ||
| SWE-bench | +0.9% | ||
| GPQA Diamond | +3.1% | ||
| Time to first token | +75 ms | ||
| Output speed | 85 tok/s | 142 tok/s | +57 tok/s |
| Input price | $0.14/1M | +$2.86/1M | |
| Output price | $0.28/1M | +$14.72/1M | |
| Context window | +40k |
Simulate monthly production API costs in USD (US Dollar).
DeepSeek V4 Flash is estimated to save $320.90/month ($3,851/year).
Higher SWE-bench (71.2%).
Lower output list price ($0.28/1M).
Lower TTFT (165 ms).
Larger window (200k).
Claude 3.7 Sonnet is the side marked multimodal in the catalog.
| Target Workload | Recommended Pick | Evaluation Rationale |
|---|---|---|
| Repo / coding agents | DeepSeek V4 Flash | Higher SWE-bench (71.2%). |
| High-volume chat | DeepSeek V4 Flash | Lower output list price ($0.28/1M). |
| Voice / low-latency UI | DeepSeek V4 Flash | Lower TTFT (165 ms). |
| Long-document RAG | Claude 3.7 Sonnet | Larger window (200k). |
| Screenshots / vision | Claude 3.7 Sonnet | Claude 3.7 Sonnet is the side marked multimodal in the catalog. |
Public listings put Flash near $0.14/$0.28 per 1M. That is a batch SKU, not a chatbot crown.
2025 hybrid-reasoning Sonnet. Deprecated for buying, kept for old compare URLs and “what did 3.7 score?”
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Verified Head-to-Head Telemetry
