Compare · ModelsLive · 2 picked · head to head
Claude Fable 5 vs GPT-5.4 Pro
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
Claude Fable 5 wins on 7/9 benchmarks
Claude Fable 5 wins 7 of 9 shared benchmarks. Leads in reasoning · math · coding.
Category leads
reasoning·Claude Fable 5knowledge·GPT-5.4 Promath·Claude Fable 5coding·Claude Fable 5
Hype vs Reality
Attention vs performance
Claude Fable 5
#30 by perf·#5 by attention
GPT-5.4 Pro
#40 by perf·#9 by attention
Best value
Claude Fable 5
3.7x better value than GPT-5.4 Pro
Claude Fable 5
2.3 pts/$
$30.00/M
GPT-5.4 Pro
0.6 pts/$
$105.00/M
Vendor risk
Who is behind the model
Anthropic
$965.0B·Tier 1
OpenAI
$840.0B·Tier 1
Head to head
9 benchmarks · 2 models
Claude Fable 5GPT-5.4 Pro
ARC-AGI
Claude Fable 5 leads by +4.0
ARC-AGI · the original Abstraction and Reasoning Corpus, testing whether AI can solve novel visual pattern recognition tasks without memorization.
Claude Fable 5
98.5
GPT-5.4 Pro
94.5
ARC-AGI-2
Claude Fable 5 leads by +5.8
ARC-AGI-2 · the second iteration of the Abstraction and Reasoning Corpus, testing novel pattern recognition and abstract reasoning without prior training data.
Claude Fable 5
89.2
GPT-5.4 Pro
83.3
Chess Puzzles
GPT-5.4 Pro leads by +14.4
Chess Puzzles · tests strategic and tactical reasoning by having models solve chess puzzle positions, evaluating lookahead and pattern recognition abilities.
Claude Fable 5
44.2
GPT-5.4 Pro
58.6
FrontierMath-Tier-4-v2-Private
Claude Fable 5 leads by +31.7
Claude Fable 5
90.2
GPT-5.4 Pro
58.5
FrontierMath-Tiers-1-3-v2-Private
Claude Fable 5 leads by +4.8
Claude Fable 5
91.6
GPT-5.4 Pro
86.8
GPQA diamond
GPT-5.4 Pro leads by +8.3
Graduate-Level Google-Proof QA (Diamond set) · expert-crafted questions in physics, biology, and chemistry that are difficult even for domain PhDs.
Claude Fable 5
84.5
GPT-5.4 Pro
92.8
SimpleBench
Claude Fable 5 leads by +9.4
SimpleBench · tests fundamental reasoning capabilities with straightforward problems designed to expose gaps in basic logical and spatial thinking.
Claude Fable 5
78.3
GPT-5.4 Pro
68.9
SimpleQA Verified
Claude Fable 5 leads by +22.9
SimpleQA Verified · short factual questions with verified answers, measuring factual accuracy and the tendency to hallucinate or provide incorrect information.
Claude Fable 5
70.7
GPT-5.4 Pro
47.8
WeirdML
Claude Fable 5 leads by +34.5
WeirdML · tests models on unusual and adversarial machine learning tasks that require creative problem-solving beyond standard patterns.
Claude Fable 5
91.9
GPT-5.4 Pro
57.4
Full benchmark table
| Benchmark | Claude Fable 5 | GPT-5.4 Pro |
|---|---|---|
ARC-AGI ARC-AGI · the original Abstraction and Reasoning Corpus, testing whether AI can solve novel visual pattern recognition tasks without memorization. | 98.5 | 94.5 |
ARC-AGI-2 ARC-AGI-2 · the second iteration of the Abstraction and Reasoning Corpus, testing novel pattern recognition and abstract reasoning without prior training data. | 89.2 | 83.3 |
Chess Puzzles Chess Puzzles · tests strategic and tactical reasoning by having models solve chess puzzle positions, evaluating lookahead and pattern recognition abilities. | 44.2 | 58.6 |
FrontierMath-Tier-4-v2-Private | 90.2 | 58.5 |
FrontierMath-Tiers-1-3-v2-Private | 91.6 | 86.8 |
GPQA diamond Graduate-Level Google-Proof QA (Diamond set) · expert-crafted questions in physics, biology, and chemistry that are difficult even for domain PhDs. | 84.5 | 92.8 |
SimpleBench SimpleBench · tests fundamental reasoning capabilities with straightforward problems designed to expose gaps in basic logical and spatial thinking. | 78.3 | 68.9 |
SimpleQA Verified SimpleQA Verified · short factual questions with verified answers, measuring factual accuracy and the tendency to hallucinate or provide incorrect information. | 70.7 | 47.8 |
WeirdML WeirdML · tests models on unusual and adversarial machine learning tasks that require creative problem-solving beyond standard patterns. | 91.9 | 57.4 |
Pricing · per 1M tokens · projected $/mo at 10M tokens
| Model | Input | Output | Context | Projected $/mo |
|---|---|---|---|---|
| $10.00 | $50.00 | 1.0M tokens (~500 books) | $200.00 | |
| $30.00 | $180.00 | 1.1M tokens (~525 books) | $675.00 |