Claude Mythos PreviewvsKimi K3.1 Highspeed
Claude Mythos Preview leads the overall Podium Score by 5.9 points (97.4 vs 91.5).Category wins: Claude Mythos Preview 5 — 0 Kimi K3.1 Highspeed.Kimi K3.1 Highspeed is the cheaper pick ($8/M vs $15/M per 1M output tokens). Kimi K3.1 Highspeed is faster (130 t/s vs 80 t/s).
Claude Mythos PreviewDrag slider or hover to compareKimi K3.1 Highspeed
Quick VerdictAggregated 2026 Benchmark Analysis
Claude Mythos Preview is rated higher overall with a Podium Score of 97.4 (vs 91.5 for Kimi K3.1 Highspeed). In head-to-head domain evaluations, Claude Mythos Preview outperforms in 5 of 7 benchmark categories.
Coding & Engineering
Claude Mythos Preview (80.9)
Inference Speed
Kimi K3.1 Highspeed (130 t/s)
Cost Efficiency
Kimi K3.1 Highspeed ($8/M)
API Price / 1M (in · out)
Claude Mythos $3/M · $15/M — Kimi K3.1 Highspeed $1.5/M · $8/M
Choose Claude Mythos Preview for math and quantitative work, and Kimi K3.1 Highspeed for cost-sensitive workloads.
| Metric | Claude Mythos Preview | Kimi K3.1 Highspeed |
|---|---|---|
| Podium Score | 97.4 ▲ | 91.5 |
| Arena Elo | — | 1455 |
| Intelligence Index | — | 60.0 |
| Coding | 80.9 ▲ | 60.0 |
| Math | 100.0 ▲ | 88.0 |
| Reasoning | 98.8 ▲ | 92.0 |
| Agentic | — | 74.0 |
| Knowledge | 100.0 ▲ | 38.0 |
| Multimodal | 100.0 ▲ | 90.0 |
| Long-context | — | 98.0 |
| Output speed | 80 t/s | 130 t/s ▲ |
| Output price | $15/M | $8/M ▲ |
| Context window | 1000K | 1000K |
Scores aggregated from five independent leaderboards. See Methodology. More head-to-heads: Claude Mythos vs Claude 5.5 Sonnet · Claude Mythos vs Kimi K3.1 Pro · Claude Mythos vs Eleven Multilingual v3 · Claude Mythos vs FLUX.2 Pro