Claude Mythos Preview vs Claude Sonnet 5
14 SHARED BENCHMARKSAcross 14 shared benchmarks, Claude Mythos Preview scores higher on 13 and Claude Sonnet 5 on 1. The widest gap is SWE-bench Multimodal, where Claude Mythos Preview scores 59 against 28.1.
ANTHROPICVSANTHROPIC14 SHARED13–1 HEAD-TO-HEADNEWEST SCORE ADDED
At a glance
MakerAnthropicAnthropic
Released—
Price per 1M tokens input / output—$2.00 / $10.00
Cost of 1M in + 1M out—$12.00
Head-to-head of 14 shared benchmarks13 wins1 wins
Scores tracked independently verified25 0 ◆153 20 ◆
Claude Sonnet 5's release date per Artificial Analysis. Prices: Anthropic's own price page for Claude Sonnet 5. ◆ = independently verified score.
Where each leadsby capability area · benchmark wins
AreaClaude Mythos PreviewWINSClaude Sonnet 5
Biggest gaps
Claude Mythos Preview pulls furthest ahead on
- Humanity's Last Exam64.7 vs 41.3
- SWE-bench Pro77.8 vs 63.2
- SWE-bench Multilingual87.3 vs 78.3
Claude Sonnet 5 pulls furthest ahead on
No ratified-area lead of 3 points or more.
Every shared benchmark14 · grouped by area
Reasoning 2
Coding 3
Agentic 2
Multimodal 1
Other shared benchmarks 6
Each score is the one the model's own page shows — the most authoritative tracked result for that benchmark, on the benchmark's standard methodology (source-attributed). ↓ marks lower-is-better metrics; ◆ an independently verified score. Open either model for its full surface, provenance and pricing.