Claude Mythos PreviewvsClaude 5.5 Sonnet
Claude Mythos Preview leads the overall Podium Score by 2.6 points (97.4 vs 94.8).Category wins: Claude Mythos Preview 4 — 1 Claude 5.5 Sonnet. Claude 5.5 Sonnet is faster (94 t/s vs 80 t/s).
Claude Mythos PreviewDrag slider or hover to compareClaude 5.5 Sonnet
Quick VerdictAggregated 2026 Benchmark Analysis
Claude Mythos Preview is rated higher overall with a Podium Score of 97.4 (vs 94.8 for Claude 5.5 Sonnet). In head-to-head domain evaluations, Claude Mythos Preview outperforms in 4 of 7 benchmark categories.
Coding & Engineering
Claude 5.5 Sonnet (91.5)
Inference Speed
Claude 5.5 Sonnet (94 t/s)
Cost Efficiency
Comparable
API Price / 1M (in · out)
Claude Mythos $3/M · $15/M — Claude 5.5 Sonnet $3/M · $15/M
Choose Claude Mythos Preview for math and quantitative work, and Claude 5.5 Sonnet for coding and software engineering.
| Metric | Claude Mythos Preview | Claude 5.5 Sonnet |
|---|---|---|
| Podium Score | 97.4 ▲ | 94.8 |
| Arena Elo | — | 1520 |
| Intelligence Index | — | 95.0 |
| Coding | 80.9 | 91.5 ▲ |
| Math | 100.0 ▲ | 94.2 |
| Reasoning | 98.8 ▲ | 95.0 |
| Agentic | — | 89.4 |
| Knowledge | 100.0 ▲ | 88.0 |
| Multimodal | 100.0 ▲ | 96.0 |
| Long-context | — | 98.0 |
| Output speed | 80 t/s | 94 t/s ▲ |
| Output price | $15/M | $15/M |
| Context window | 1000K | 1000K |
Scores aggregated from five independent leaderboards. See Methodology. More head-to-heads: Claude Mythos vs Kimi K3.1 Pro · Claude Mythos vs Eleven Multilingual v3 · Claude Mythos vs FLUX.2 Pro · Claude Mythos vs Gemini 4 Argon