Pairwise benchmark snapshot · Aug 1, 2026
In this head-to-head showdown, Llama 3.1 405B delivers higher overall intelligence and human-preferred responses (Elo 1,370 vs 1,365), while DeepSeek Coder V2 leads in SWE-bench software engineering benchmarks (60.5%), while DeepSeek Coder V2 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
DeepSeek open-weight Mixture-of-Experts coding model supporting 338 programming languages and 128k context.
Meta flagship open-weight 405B dense foundation model with 128k context window.
Δ 5 Arena Elo pts
75 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 | Llama 3.1 405B | Advantage Delta |
|---|---|---|---|
| Preference Elo | +5 | ||
| Coding Elo | +57 | ||
| LiveBench | +2.6% | ||
| SWE-bench | +2.1% | ||
| GPQA Diamond | +5% | ||
| Time to first token | +70 ms | ||
| Output speed | 75 tok/s | 42 tok/s | +33 tok/s |
| Input price | $0.14/1M | $1.25/1M | +$1.11/1M |
| Output price | $0.28/1M | $3.5/1M | +$3.22/1M |
| Context window | — |
Simulate monthly production API costs in USD (US Dollar).
DeepSeek Coder V2 is estimated to save $87.15/month ($1,046/year).
Higher SWE-bench (60.5%).
Lower output list price ($0.28/1M).
Lower TTFT (290 ms).
Larger window (128k).
Llama 3.1 405B is the side marked multimodal in the catalog.
| Target Workload | Recommended Pick | Evaluation Rationale |
|---|---|---|
| Repo / coding agents | DeepSeek Coder V2 | Higher SWE-bench (60.5%). |
| 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 | DeepSeek Coder V2 | Larger window (128k). |
| Screenshots / vision | Llama 3.1 405B | Llama 3.1 405B is the side marked multimodal in the catalog. |
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