Kimi K3.1 HighspeedvsKimi K2.5 Thinking
Kimi K3.1 Highspeed leads the overall Podium Score by 18.5 points (91.5 vs 73.0).Category wins: Kimi K3.1 Highspeed 0 — 0 Kimi K2.5 Thinking.Kimi K2.5 Thinking is the cheaper pick ($3/M vs $8/M per 1M output tokens). Kimi K3.1 Highspeed is faster (130 t/s vs 50 t/s).
Kimi K3.1 HighspeedDrag slider or hover to compareKimi K2.5 Thinking
Quick VerdictAggregated 2026 Benchmark Analysis
Kimi K3.1 Highspeed is rated higher overall with a Podium Score of 91.5 (vs 73.0 for Kimi K2.5 Thinking). Both models show closely matched capabilities across domain benchmarks.
Coding & Engineering
Comparable
Inference Speed
Kimi K3.1 Highspeed (130 t/s)
Cost Efficiency
Kimi K2.5 Thinking ($3/M)
API Price / 1M (in · out)
Kimi K3.1 Highspeed $1.5/M · $8/M — Kimi K2.5 T $1/M · $3/M
Choose Kimi K3.1 Highspeed for low-latency applications, and Kimi K2.5 Thinking for cost-sensitive workloads.
| Metric | Kimi K3.1 Highspeed | Kimi K2.5 Thinking |
|---|---|---|
| Podium Score | 91.5 ▲ | 73.0 |
| Arena Elo | 1455 | — |
| Intelligence Index | 60.0 | — |
| Coding | 60.0 | — |
| Math | 88.0 | — |
| Reasoning | 92.0 | — |
| Agentic | 74.0 | — |
| Knowledge | 38.0 | — |
| Multimodal | 90.0 | — |
| Long-context | 98.0 | — |
| Output speed | 130 t/s ▲ | 50 t/s |
| Output price | $8/M | $3/M ▲ |
| Context window | 1000K ▲ | 128K |
Scores aggregated from five independent leaderboards. See Methodology. More head-to-heads: Kimi K3.1 Highspeed vs Claude Mythos · Kimi K3.1 Highspeed vs Claude 5.5 Sonnet · Kimi K3.1 Highspeed vs Kimi K3.1 Pro · Kimi K3.1 Highspeed vs Eleven Multilingual v3