Pairwise benchmark snapshot · Aug 1, 2026
In this head-to-head showdown, GPT-5 delivers higher overall intelligence and human-preferred responses (Elo 1,558 vs 1,365), while GPT-5 leads in SWE-bench software engineering benchmarks (68.4%), while DeepSeek Coder V2 is more budget-friendly at $0.28/1M per 1M output tokens, while GPT-5 provides faster response streaming (78 tok/s). 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
DeepSeek open-weight Mixture-of-Experts coding model supporting 338 programming languages and 128k context.
OpenAI flagship reasoning model for 2025–26. Strong general preference Elo and multimodal coverage.
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 193 Arena Elo pts
78 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 | DeepSeek Coder V2 | GPT-5 | Advantage Delta |
|---|---|---|---|
| Preference Elo | +193 | ||
| Coding Elo | +98 | ||
| LiveBench | +11.2% | ||
| SWE-bench | +7.9% | ||
| GPQA Diamond | +15% | ||
| Time to first token | — | ||
| Output speed | 75 tok/s | 78 tok/s | +3 tok/s |
| Input price | $0.14/1M | +$4.86/1M | |
| Output price | $0.28/1M | +$19.72/1M | |
| Context window | +272k |
Simulate monthly production API costs in USD (US Dollar).
DeepSeek Coder V2 is estimated to save $465.90/month ($5,591/year).
Higher SWE-bench (68.4%).
Lower output list price ($0.28/1M).
Lower TTFT (290 ms).
Larger window (400k).
GPT-5 is the side marked multimodal in the catalog.
| Target Workload | Recommended Pick | Evaluation Rationale |
|---|---|---|
| Repo / coding agents | GPT-5 | Higher SWE-bench (68.4%). |
| High-volume chat | DeepSeek Coder V2 | Lower output list price ($0.28/1M). |
| Voice / low-latency UI | DeepSeek Coder V2 | Lower TTFT (290 ms). |
| Long-document RAG | GPT-5 | Larger window (400k). |
| Screenshots / vision | GPT-5 | GPT-5 is the side marked multimodal in the catalog. |
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