Pairwise benchmark snapshot · Aug 1, 2026
In this head-to-head showdown, Kimi Chat 1.5 delivers higher overall intelligence and human-preferred responses (Elo 1,420 vs 1,410), while GPT-5 mini leads in SWE-bench software engineering benchmarks (52.4%), while Kimi Chat 1.5 is more budget-friendly at $0.8/1M per 1M output tokens, while GPT-5 mini provides faster response streaming (155 tok/s). Review the complete breakdown below to determine which model best fits your performance and budget requirements.
10 direct benchmark disciplines evaluated across capability, speed, and cost
Cost-efficient GPT-5 distill for high-volume agents.
Moonshot ultra-long context model supporting up to 2 million tokens per request.
Currently comparing GPT-5 mini vs Kimi Chat 1.5. Alternative family tiers available.
Δ 10 Arena Elo pts
155 tok/s
$0.8 / 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 | GPT-5 mini | Kimi Chat 1.5 | Advantage Delta |
|---|---|---|---|
| Preference Elo | +10 | ||
| Coding Elo | +5 | ||
| LiveBench | +3.2% | ||
| SWE-bench | +1.4% | ||
| GPQA Diamond | +0.5% | ||
| Time to first token | +70 ms | ||
| Output speed | 155 tok/s | 95 tok/s | +60 tok/s |
| Input price | $0.25/1M | $0.2/1M | +$0.05/1M |
| Output price | $0.8/1M | +$1.2/1M | |
| Context window | +1.6M |
Simulate monthly production API costs in USD (US Dollar).
Kimi Chat 1.5 is estimated to save $19.75/month ($237/year).
Higher SWE-bench (52.4%).
Lower output list price ($0.8/1M).
Lower TTFT (140 ms).
Larger window (2M).
GPT-5 mini is the side marked multimodal in the catalog.
| Target Workload | Recommended Pick | Evaluation Rationale |
|---|---|---|
| Repo / coding agents | GPT-5 mini | Higher SWE-bench (52.4%). |
| High-volume chat | Kimi Chat 1.5 | Lower output list price ($0.8/1M). |
| Voice / low-latency UI | GPT-5 mini | Lower TTFT (140 ms). |
| Long-document RAG | Kimi Chat 1.5 | Larger window (2M). |
| Screenshots / vision | GPT-5 mini | GPT-5 mini is the side marked multimodal in the catalog. |
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