Pairwise benchmark snapshot · Aug 17, 2026
In this head-to-head showdown, Kimi Chat 1.5 delivers higher overall intelligence and human-preferred responses (Elo 1,420 vs 1,248), while Kimi Chat 1.5 leads in SWE-bench software engineering benchmarks (51%), 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.
Original Claude 3 flagship. Kept so opus 3 vs later Opus and vs GPT-4o still resolve.
Moonshot ultra-long context model supporting up to 2 million tokens per request.
Δ 172 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 | Claude 3 Opus | Kimi Chat 1.5 | Advantage Delta |
|---|---|---|---|
| Preference Elo | Kimi Chat 1.5 (+172) | ||
| Coding Elo | — | — | |
| LiveBench | Kimi Chat 1.5 (+11.8%) | ||
| SWE-bench | Kimi Chat 1.5 (+12.6%) | ||
| GPQA Diamond | Kimi Chat 1.5 (+21.1%) | ||
| Time to first token | Kimi Chat 1.5 (+210 ms) | ||
| Output speed | 48 tok/s | 95 tok/s | Kimi Chat 1.5 (+47 tok/s) |
| Input price | $0.2/1M | Kimi Chat 1.5 (+$14.8/1M) | |
| Output price | $0.8/1M | Kimi Chat 1.5 (+$74.2/1M) | |
| Context window | Kimi Chat 1.5 (+1.8M) |
Simulate monthly production API costs in USD (US Dollar).
Kimi Chat 1.5 is estimated to save $1,631.00/month ($19,572/year).
Higher SWE-bench (51%).
Lower output list price ($0.8/1M).
Lower TTFT (210 ms).
Larger window (2M).
Claude 3 Opus is the side marked multimodal in the catalog.
| Target Workload | Recommended Pick | Evaluation Rationale |
|---|---|---|
| Repo / coding agents | Kimi Chat 1.5 | Higher SWE-bench (51%). |
| 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 | Claude 3 Opus | Claude 3 Opus is the side marked multimodal in the catalog. |
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