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 1,295), 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 Gemini 2.5 Flash provides faster response streaming (185 tok/s). 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
Previous Google speed workhorse.
Auto-discovered from OpenRouter (moonshotai/kimi-k2). Preview until a second source matches.
Currently comparing Gemini 2.5 Flash vs MoonshotAI: Kimi K2 0711. Alternative family tiers available.
Δ 170 Arena Elo pts
185 tok/s
$2.3 / 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 | Gemini 2.5 Flash | MoonshotAI: Kimi K2 0711 | Advantage Delta |
|---|---|---|---|
| Preference Elo | +170 | ||
| Coding Elo | — | — | |
| LiveBench | +11.4% | ||
| SWE-bench | +17.8% | ||
| GPQA Diamond | +8.3% | ||
| Time to first token | +130 ms | ||
| Output speed | 185 tok/s | 85 tok/s | +100 tok/s |
| Input price | $0.3/1M | $0.57/1M | +$0.27/1M |
| Output price | $2.5/1M | $2.3/1M | +$0.2/1M |
| Context window | +918k |
Simulate monthly production API costs in USD (US Dollar).
Gemini 2.5 Flash is estimated to save $6.45/month ($77/year).
Higher SWE-bench (65.8%).
Lower output list price ($2.3/1M).
Lower TTFT (110 ms).
Larger window (1M).
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 | Gemini 2.5 Flash | Lower TTFT (110 ms). |
| Long-document RAG | Gemini 2.5 Flash | Larger window (1M). |
| Screenshots / vision | MoonshotAI: Kimi K2 0711 | Both accept images. Defaulting to the higher-Elo side (MoonshotAI: Kimi K2 0711). |
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Verified Head-to-Head Telemetry
