Head-to-head
Claude Opus 5.5 vs Kimi K3
As of October 29, 2026, Claude Opus 5.5 leads Kimi K3 on the Analyzer Index, 98.3 to 80.5.
Normalized scores are min-maxed per benchmark across all models we track (0–100). Open the interactive compare view to add benchmarks to the radar chart or pull in more models.
Claude Opus 5.5
AnthropicKimi K3
Moonshot (Kimi)| At a glance | Claude Opus 5.5 | Kimi K3 |
|---|---|---|
| Analyzer Index | 98.3 (6/13) | 80.5 (6/13) |
| Blended price | $8.00/M | $6.00/M |
| Cheapest host | maker's API | $2.47/M |
| Context | 1.0M | 1.0M |
| Output speed | 85 tok/s | 40 tok/s |
| Time to first token | 3.86 s | 3.80 s |
| Benchmark | Claude Opus 5.5 | Kimi K3 |
|---|---|---|
Chatbot Arena Elo Arena | ||
Output Speed Speed | ||
Time to First Token TTFT | ||
Rolling Contamination-Controlled Average Rolling Avg | ||
Rolling Data Analysis Data Analysis | ||
SimpleQA Verified SimpleQA | ||
OTIS Mock AIME 2024-2025 OTIS AIME | ||
ARC-AGI 2 ARC-AGI 2 | ||
Frontier Composite Frontier | ||
Output Stability Stability | — | |
Format Adherence Format | — | |
Recovery Rate Recovery | — | |
API Success Rate API OK | ||
Safety Handling Safety | — |
Methodology matches the main AI Model Analyzer About page.