Pairwise benchmark snapshot · Aug 17, 2026
In this head-to-head showdown, MoonshotAI: Kimi K2 0711 delivers higher overall intelligence and human-preferred responses (Elo 1,465 vs 1,398), while MoonshotAI: Kimi K2 0711 leads in SWE-bench software engineering benchmarks (65.8%), while MoonshotAI: Kimi K2 0711 is more budget-friendly at $2.3/1M per 1M output tokens, while Qwen3.8 27B provides faster response streaming (152 tok/s). Review the complete breakdown below to determine which model best fits your performance and budget requirements.
10 benchmarks evaluated across capability, speed, and cost
Auto-discovered from OpenRouter (moonshotai/kimi-k2). Preview until a second source matches.
Alibaba open-weight 27B drop dated Aug 14 2026. Dense enough to self-host; not a frontier MoE.
Currently comparing MoonshotAI: Kimi K2 0711 vs Qwen3.8 27B. Alternative family tiers available.
Δ 67 Arena Elo pts
152 tok/s
$2.3 / 1M output
Relative percentile scores computed across all active models in the benchmark catalog.
Comparing top standard models across 6 key capability 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 | MoonshotAI: Kimi K2 0711 | Qwen3.8 27B | Advantage Delta |
|---|---|---|---|
| Preference Elo | +67 | ||
| Coding Elo | +48 | ||
| LiveBench | +2.2% | ||
| SWE-bench | +7% | ||
| GPQA Diamond | +3.1% | ||
| Time to first token | +100 ms | ||
| Output speed | 85 tok/s | 152 tok/s | +67 tok/s |
| Input price | $0.57/1M | $0.45/1M | +$0.12/1M |
| Output price | $2.3/1M | $3.2/1M | +$0.9/1M |
| Context window | +131k |
Simulate monthly production API costs in USD (US Dollar).
MoonshotAI: Kimi K2 0711 is estimated to save $9.30/month ($112/year).
Higher SWE-bench (65.8%).
Lower output list price ($2.3/1M).
Lower TTFT (140 ms).
Larger window (262k).
MoonshotAI: Kimi K2 0711 is the side marked multimodal in the catalog.
| Target Workload | Recommended Pick | Evaluation Rationale |
|---|---|---|
| Repo / coding agents | MoonshotAI: Kimi K2 0711 | Higher SWE-bench (65.8%). |
| High-volume chat | MoonshotAI: Kimi K2 0711 | Lower output list price ($2.3/1M). |
| Voice / low-latency UI | Qwen3.8 27B | Lower TTFT (140 ms). |
| Long-document RAG | Qwen3.8 27B | Larger window (262k). |
| Screenshots / vision | MoonshotAI: Kimi K2 0711 | MoonshotAI: Kimi K2 0711 is the side marked multimodal in the catalog. |
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Verified Head-to-Head Telemetry
