Compare · ModelsLive · 2 picked · head to head
Claude Fable 5.2 vs Claude Opus 5.5
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
Claude Fable 5.2 wins on 9/10 benchmarks
Claude Fable 5.2 wins 9 of 10 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 5.2
#1 by perf·#6 by attention
Claude Opus 5.5
#10 by perf·#5 by attention
Best value
Claude Opus 5.5
1.7x better value than Claude Fable 5.2
Claude Fable 5.2
3.6 pts/$
$24.00/M
Claude Opus 5.5
6.2 pts/$
$12.00/M
Vendor risk
Who is behind the model
Anthropic
$965.0B·Tier 1
Anthropic
$965.0B·Tier 1
Head to head
10 benchmarks · 2 models
Claude Fable 5.2Claude Opus 5.5
Chess Puzzles
Claude Fable 5.2 leads by +12.6
Chess Puzzles · tests strategic and tactical reasoning by having models solve chess puzzle positions, evaluating lookahead and pattern recognition abilities.
Claude Fable 5.2
77.9
Claude Opus 5.5
65.3
Ebr Bench
Claude Fable 5.2 leads by +19.0
Claude Fable 5.2
90.5
Claude Opus 5.5
71.4
FrontierMath-Tier-4-v2-Private
Claude Fable 5.2 leads by +5.0
Claude Fable 5.2
100.0
Claude Opus 5.5
95.0
FrontierMath-Tiers-1-3-v2-Private
Claude Fable 5.2 leads by +4.0
Claude Fable 5.2
100.0
Claude Opus 5.5
96.0
Furniture Assembly
Claude Fable 5.2 leads by +9.5
Claude Fable 5.2
85.7
Claude Opus 5.5
76.2
GPQA diamond
Claude Fable 5.2 leads by +4.6
Graduate-Level Google-Proof QA (Diamond set) · expert-crafted questions in physics, biology, and chemistry that are difficult even for domain PhDs.
Claude Fable 5.2
95.7
Claude Opus 5.5
91.1
Mystery Game Puzzles
Claude Fable 5.2 leads by +20.9
Claude Fable 5.2
89.0
Claude Opus 5.5
68.0
OTIS Mock AIME 2024-2025
Claude Opus 5.5 leads by +0.3
OTIS Mock AIME 2024-2025 · simulated American Invitational Mathematics Examination problems testing advanced problem-solving skills.
Claude Fable 5.2
99.7
Claude Opus 5.5
100.0
SimpleQA Verified
Claude Fable 5.2 leads by +21.8
SimpleQA Verified · short factual questions with verified answers, measuring factual accuracy and the tendency to hallucinate or provide incorrect information.
Claude Fable 5.2
94.0
Claude Opus 5.5
72.2
SpireClimb
Claude Fable 5.2 leads by +13.8
Claude Fable 5.2
19.6
Claude Opus 5.5
5.8
Full benchmark table
| Benchmark | Claude Fable 5.2 | Claude Opus 5.5 |
|---|---|---|
Chess Puzzles Chess Puzzles · tests strategic and tactical reasoning by having models solve chess puzzle positions, evaluating lookahead and pattern recognition abilities. | 77.9 | 65.3 |
Ebr Bench | 90.5 | 71.4 |
FrontierMath-Tier-4-v2-Private | 100.0 | 95.0 |
FrontierMath-Tiers-1-3-v2-Private | 100.0 | 96.0 |
Furniture Assembly | 85.7 | 76.2 |
GPQA diamond Graduate-Level Google-Proof QA (Diamond set) · expert-crafted questions in physics, biology, and chemistry that are difficult even for domain PhDs. | 95.7 | 91.1 |
Mystery Game Puzzles | 89.0 | 68.0 |
OTIS Mock AIME 2024-2025 OTIS Mock AIME 2024-2025 · simulated American Invitational Mathematics Examination problems testing advanced problem-solving skills. | 99.7 | 100.0 |
SimpleQA Verified SimpleQA Verified · short factual questions with verified answers, measuring factual accuracy and the tendency to hallucinate or provide incorrect information. | 94.0 | 72.2 |
SpireClimb | 19.6 | 5.8 |
Pricing · per 1M tokens · projected $/mo at 10M tokens
| Model | Input | Output | Context | Projected $/mo |
|---|---|---|---|---|
| $8.00 | $40.00 | 1.0M tokens (~500 books) | $160.00 | |
| $4.00 | $20.00 | 1.0M tokens (~500 books) | $80.00 |