Compare · ModelsLive · 2 picked · head to head
Claude Fable 5.1 vs Claude Fable 5.2
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
Claude Fable 5.2 wins on 8/9 benchmarks
Claude Fable 5.2 wins 8 of 9 shared benchmarks. Leads in knowledge · general · math.
Category leads
knowledge·Claude Fable 5.2general·Claude Fable 5.2math·Claude Fable 5.2
Hype vs Reality
Attention vs performance
Claude Fable 5.1
#28 by perf·#6 by attention
Claude Fable 5.2
#1 by perf·#6 by attention
Best value
Claude Fable 5.2
1.6x better value than Claude Fable 5.1
Claude Fable 5.1
2.3 pts/$
$30.00/M
Claude Fable 5.2
3.6 pts/$
$24.00/M
Vendor risk
Who is behind the model
Anthropic
$965.0B·Tier 1
Anthropic
$965.0B·Tier 1
Head to head
9 benchmarks · 2 models
Claude Fable 5.1Claude Fable 5.2
Chess Puzzles
Claude Fable 5.2 leads by +32.6
Chess Puzzles · tests strategic and tactical reasoning by having models solve chess puzzle positions, evaluating lookahead and pattern recognition abilities.
Claude Fable 5.1
45.3
Claude Fable 5.2
77.9
Ebr Bench
Claude Fable 5.2 leads by +33.3
Claude Fable 5.1
57.1
Claude Fable 5.2
90.5
FrontierMath-Tier-4-v2-Private
Claude Fable 5.2 leads by +12.2
Claude Fable 5.1
87.8
Claude Fable 5.2
100.0
FrontierMath-Tiers-1-3-v2-Private
Claude Fable 5.2 leads by +5.1
Claude Fable 5.1
94.9
Claude Fable 5.2
100.0
Furniture Assembly
Claude Fable 5.2 leads by +28.6
Claude Fable 5.1
57.1
Claude Fable 5.2
85.7
Mystery Game Puzzles
Claude Fable 5.2 leads by +35.3
Claude Fable 5.1
53.7
Claude Fable 5.2
89.0
OTIS Mock AIME 2024-2025
Claude Fable 5.1 leads by +0.3
OTIS Mock AIME 2024-2025 · simulated American Invitational Mathematics Examination problems testing advanced problem-solving skills.
Claude Fable 5.1
100.0
Claude Fable 5.2
99.7
SimpleQA Verified
Claude Fable 5.2 leads by +23.2
SimpleQA Verified · short factual questions with verified answers, measuring factual accuracy and the tendency to hallucinate or provide incorrect information.
Claude Fable 5.1
70.8
Claude Fable 5.2
94.0
SpireClimb
Claude Fable 5.2 leads by +17.6
Claude Fable 5.1
2.0
Claude Fable 5.2
19.6
Full benchmark table
| Benchmark | Claude Fable 5.1 | Claude Fable 5.2 |
|---|---|---|
Chess Puzzles Chess Puzzles · tests strategic and tactical reasoning by having models solve chess puzzle positions, evaluating lookahead and pattern recognition abilities. | 45.3 | 77.9 |
Ebr Bench | 57.1 | 90.5 |
FrontierMath-Tier-4-v2-Private | 87.8 | 100.0 |
FrontierMath-Tiers-1-3-v2-Private | 94.9 | 100.0 |
Furniture Assembly | 57.1 | 85.7 |
Mystery Game Puzzles | 53.7 | 89.0 |
OTIS Mock AIME 2024-2025 OTIS Mock AIME 2024-2025 · simulated American Invitational Mathematics Examination problems testing advanced problem-solving skills. | 100.0 | 99.7 |
SimpleQA Verified SimpleQA Verified · short factual questions with verified answers, measuring factual accuracy and the tendency to hallucinate or provide incorrect information. | 70.8 | 94.0 |
SpireClimb | 2.0 | 19.6 |
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 | |
| $8.00 | $40.00 | 1.0M tokens (~500 books) | $160.00 |
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