AI model comparisons
Head-to-head results from the public leaderboards ArtificialWatch reads every day. Each page shows every board that scores both models, with the board's own number. Nothing here is our opinion. Table composed September 24, 2026.
GPT-6 Astra vs Claude Fable 5.1
Of the 6 public leaderboards that rate both, GPT-6 Astra scores higher on 2 and Claude Fable 5.1 on 4.
GPT-6 Astra vs GPT-5.6
GPT-6 Astra scores higher than GPT-5.6 on all 6 public leaderboards that rate both.
GPT-6 Astra vs Claude Opus 5
Of the 6 public leaderboards that rate both, GPT-6 Astra scores higher on 5 and Claude Opus 5 on 1.
Claude Fable 5.1 vs Claude Fable 5
Claude Fable 5.1 scores higher than Claude Fable 5 on all 6 public leaderboards that rate both.
Claude Fable 5.1 vs Claude Opus 5
Of the 6 public leaderboards that rate both, Claude Fable 5.1 scores higher on 5 and Claude Opus 5 on 1.
Claude Opus 5 vs GPT-5.6
Of the 6 public leaderboards that rate both, Claude Opus 5 scores higher on 5 and GPT-5.6 on 1.
Claude Opus 5 vs Claude Opus 4.8
Claude Opus 5 scores higher than Claude Opus 4.8 on all 5 public leaderboards that rate both.
Claude Opus 5 vs Claude Fable 5
Of the 6 public leaderboards that rate both, Claude Opus 5 scores higher on 4 and Claude Fable 5 on 2.
Claude Opus 5 vs Kimi K3
Claude Opus 5 scores higher than Kimi K3 on all 6 public leaderboards that rate both.
Kimi K3 vs Claude Fable 5
Of the 6 public leaderboards that rate both, Kimi K3 scores higher on 1 and Claude Fable 5 on 5.
Kimi K3 vs GLM-5.2
Kimi K3 scores higher than GLM-5.2 on all 5 public leaderboards that rate both.
Kimi K3 vs GPT-5.6
Of the 6 public leaderboards that rate both, Kimi K3 scores higher on 1 and GPT-5.6 on 5.
DeepSeek V4 Pro vs GLM-5.2
Of the 5 public leaderboards that rate both, DeepSeek V4 Pro scores higher on 2 and GLM-5.2 on 3.
DeepSeek V4 Pro vs Kimi K3
Kimi K3 scores higher than DeepSeek V4 Pro on all 6 public leaderboards that rate both.