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 1,420), while MoonshotAI: Kimi K2 0711 leads in SWE-bench software engineering benchmarks (65.8%), while Kimi Chat 1.5 is more budget-friendly at $0.8/1M per 1M output tokens. Review the complete breakdown below to determine which model best fits your performance and budget requirements.
Moonshot ultra-long context model supporting up to 2 million tokens per request.
Auto-discovered from OpenRouter (moonshotai/kimi-k2). Preview until a second source matches.
Speed, cost, and intelligence tradeoffs across the Moonshot lineup
Δ 45 Arena Elo pts
95 tok/s
$0.8 / 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 | Kimi Chat 1.5 | MoonshotAI: Kimi K2 0711 | Advantage Delta |
|---|---|---|---|
| Preference Elo | MoonshotAI: Kimi K2 0711 (+45) | ||
| Coding Elo | MoonshotAI: Kimi K2 0711 (+80) | ||
| LiveBench | MoonshotAI: Kimi K2 0711 (+4.8%) | ||
| SWE-bench | MoonshotAI: Kimi K2 0711 (+14.8%) | ||
| GPQA Diamond | MoonshotAI: Kimi K2 0711 (+5%) | ||
| Time to first token | Kimi Chat 1.5 (+30 ms) | ||
| Output speed | 95 tok/s | 85 tok/s | Kimi Chat 1.5 (+10 tok/s) |
| Input price | $0.2/1M | $0.57/1M | Kimi Chat 1.5 (+$0.37/1M) |
| Output price | $0.8/1M | $2.3/1M | Kimi Chat 1.5 (+$1.5/1M) |
| Context window | Kimi Chat 1.5 (+1.9M) |
Simulate monthly production API costs in USD (US Dollar).
Kimi Chat 1.5 is estimated to save $35.45/month ($425/year).
Higher SWE-bench (65.8%).
Lower output list price ($0.8/1M).
Lower TTFT (210 ms).
Larger window (2M).
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 | Kimi Chat 1.5 | Lower output list price ($0.8/1M). |
| Voice / low-latency UI | Kimi Chat 1.5 | Lower TTFT (210 ms). |
| Long-document RAG | Kimi Chat 1.5 | Larger window (2M). |
| 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 card
