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 1,280), 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. Review the complete breakdown below to determine which model best fits your performance and budget requirements.
2024 workhorse. Still a high-intent compare against GPT-4o.
Auto-discovered from OpenRouter (moonshotai/kimi-k2). Preview until a second source matches.
Δ 185 Arena Elo pts
85 tok/s
$2.3 / 1M output
Relative percentile scores computed across all active models in the benchmark catalog.
Each spoke is a skill. Farther from the center is better (0–100th percentile). Tap any dot to inspect details.
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 3.5 Sonnet | MoonshotAI: Kimi K2 0711 | Advantage Delta |
|---|---|---|---|
| Preference Elo | MoonshotAI: Kimi K2 0711 (+185) | ||
| Coding Elo | — | — | |
| LiveBench | MoonshotAI: Kimi K2 0711 (+10.7%) | ||
| SWE-bench | MoonshotAI: Kimi K2 0711 (+16.8%) | ||
| GPQA Diamond | MoonshotAI: Kimi K2 0711 (+11.5%) | ||
| Time to first token | MoonshotAI: Kimi K2 0711 (+40 ms) | ||
| Output speed | 80 tok/s | 85 tok/s | MoonshotAI: Kimi K2 0711 (+5 tok/s) |
| Input price | $0.57/1M | MoonshotAI: Kimi K2 0711 (+$2.43/1M) | |
| Output price | $2.3/1M | MoonshotAI: Kimi K2 0711 (+$12.7/1M) | |
| Context window | Claude 3.5 Sonnet (+69k) |
Simulate monthly production API costs in USD (US Dollar).
MoonshotAI: Kimi K2 0711 is estimated to save $275.55/month ($3,307/year).
Higher SWE-bench (65.8%).
Lower output list price ($2.3/1M).
Lower TTFT (240 ms).
Larger window (200k).
Both accept images. Defaulting to the higher-Elo side (MoonshotAI: Kimi K2 0711).
| 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 | MoonshotAI: Kimi K2 0711 | Lower TTFT (240 ms). |
| Long-document RAG | Claude 3.5 Sonnet | Larger window (200k). |
| Screenshots / vision | MoonshotAI: Kimi K2 0711 | Both accept images. Defaulting to the higher-Elo side (MoonshotAI: Kimi K2 0711). |
No comments posted on this matchup yet. Be the first to share an evaluation note!
The real PNG is generated at /compare/claude-3-5-sonnet-vs-kimi-k2/opengraph-image for crawlers.
Verified head-to-head card
