Note: Overall leaderboard rankings may not reflect true model quality — individual benchmarks give a clearer picture. ARC-Challenge MMLU GPQA GSM8K Artificial Analysis Intelligence Index v4.1
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WANDR (relaxed score)

4 models

Top 5 Models Performance

Anthropic: claude-fable-5.2 ######################################## 82.1
Anthropic: claude-mythos-5.2 ######################################## 82.1
Anthropic: claude-opus-5.5 ################################### 72.3
Anthropic: claude-fable-5.1 ################################# 68.7
– 970 – 1.1T
– 2019 – 2026
Rank Model Score
🇺🇸 1 Anthropic: claude-fable-5.2 82.1
🇺🇸 2 Anthropic: claude-mythos-5.2 82.1
🇺🇸 3 Anthropic: claude-opus-5.5 72.3
🇺🇸 4 Anthropic: claude-fable-5.1 68.7