Pairwise benchmark snapshot · Aug 1, 2026
In this head-to-head showdown, Kimi K2 delivers higher overall intelligence and human-preferred responses (Elo 1,465 vs 1,240), while Kimi K2 leads in SWE-bench software engineering benchmarks (65.8%), while Llama 3.1 70B is more budget-friendly at $0.4/1M per 1M output tokens. Review the complete breakdown below to determine which model best fits your performance and budget requirements.
7 direct benchmark disciplines evaluated across capability, speed, and cost
Moonshot foundation model with strong native bilingual reasoning and 65.8% SWE-bench Verified coding baseline.
Llama 3.1 70B instruct. Predecessor to 3.3 70B and Llama 4.
Currently comparing Kimi K2 vs Llama 3.1 70B. Alternative family tiers available.
Δ 225 Arena Elo pts
125 tok/s
$0.4 / 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 | Kimi K2 | Llama 3.1 70B | Advantage Delta |
|---|---|---|---|
| Preference Elo | +225 | ||
| Coding Elo | — | — | |
| LiveBench | +16% | ||
| SWE-bench | +25.6% | ||
| GPQA Diamond | +28.5% | ||
| Time to first token | +70 ms | ||
| Output speed | 85 tok/s | 125 tok/s | +40 tok/s |
| Input price | $0.35/1M | $0.35/1M | — |
| Output price | $1.4/1M | $0.4/1M | +$1/1M |
| Context window | — |
Simulate monthly production API costs in USD (US Dollar).
Llama 3.1 70B is estimated to save $15.00/month ($180/year).
Higher SWE-bench (65.8%).
Lower output list price ($0.4/1M).
Lower TTFT (170 ms).
Larger window (128k).
Kimi K2 is the side marked multimodal in the catalog.
| Target Workload | Recommended Pick | Evaluation Rationale |
|---|---|---|
| Repo / coding agents | Kimi K2 | Higher SWE-bench (65.8%). |
| High-volume chat | Llama 3.1 70B | Lower output list price ($0.4/1M). |
| Voice / low-latency UI | Llama 3.1 70B | Lower TTFT (170 ms). |
| Long-document RAG | Kimi K2 | Larger window (128k). |
| Screenshots / vision | Kimi K2 | Kimi K2 is the side marked multimodal in the catalog. |
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Verified Head-to-Head Telemetry
