Compare · ModelsLive · 3 picked · head to head
Claude Fable 5 vs 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 17/24 benchmarks
Claude Fable 5.2 wins 17 of 24 shared benchmarks. Leads in agentic · reasoning · knowledge.
Category leads
agentic·Claude Fable 5.2reasoning·Claude Fable 5.2knowledge·Claude Fable 5.2general·Claude Fable 5.2math·Claude Fable 5.2coding·Claude Opus 5.5speed·Claude Fable 5
Hype vs Reality
Attention vs performance
Claude Fable 5
#30 by perf·#5 by attention
Claude Fable 5.2
#2 by perf·#5 by attention
Claude Opus 5.5
#11 by perf·#6 by attention
Best value
Claude Opus 5.5
1.7x better value than Claude Fable 5.2
Claude Fable 5
2.3 pts/$
$30.00/M
Claude Fable 5.2
3.5 pts/$
$24.00/M
Claude Opus 5.5
6.2 pts/$
$12.00/M
Vendor risk
Who is behind the model
Anthropic
$965.0B·Tier 1
Anthropic
$965.0B·Tier 1
Anthropic
$965.0B·Tier 1
Head to head
24 benchmarks · 3 models
Claude Fable 5Claude Fable 5.2Claude Opus 5.5
APEX-Agents
Claude Fable 5.2 leads by +6.6
APEX-Agents · evaluates AI agents on complex, multi-step tasks requiring planning, tool use, and autonomous decision-making in realistic environments.
Claude Fable 5
63.6
Claude Fable 5.2
80.1
Claude Opus 5.5
73.5
ARC-AGI
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
Claude Fable 5.2
98.5
Claude Opus 5.5
98.5
ARC-AGI-2
Claude Fable 5.2 leads by +0.4
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
Claude Fable 5.2
93.8
Claude Opus 5.5
93.3
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
44.2
Claude Fable 5.2
77.9
Claude Opus 5.5
65.3
Dtbench
Claude Fable 5.2 leads by +0.5
Claude Fable 5
97.3
Claude Fable 5.2
98.7
Claude Opus 5.5
98.2
Ebr Bench
Claude Fable 5.2 leads by +19.0
Claude Fable 5
39.5
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
90.2
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
91.6
Claude Fable 5.2
100.0
Claude Opus 5.5
96.0
Frontierswe
Claude Fable 5.2 leads by +7.6
Claude Fable 5
47.0
Claude Fable 5.2
69.9
Claude Opus 5.5
62.3
Furniture Assembly
Claude Fable 5.2 leads by +9.5
Claude Fable 5
8.3
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
84.5
Claude Fable 5.2
95.7
Claude Opus 5.5
91.1
Lmca
Claude Fable 5.2 leads by +2.8
Claude Fable 5
71.9
Claude Fable 5.2
83.1
Claude Opus 5.5
80.3
Mystery Game Puzzles
Claude Fable 5.2 leads by +20.9
Claude Fable 5
47.1
Claude Fable 5.2
89.0
Claude Opus 5.5
68.0
OTIS Mock AIME 2024-2025
OTIS Mock AIME 2024-2025 · simulated American Invitational Mathematics Examination problems testing advanced problem-solving skills.
Claude Fable 5
100.0
Claude Fable 5.2
99.7
Claude Opus 5.5
100.0
Proofbench
Claude Fable 5
95.0
Claude Fable 5.2
100.0
Claude Opus 5.5
100.0
Remote Labor Index
Claude Fable 5.2 leads by +20.0
Claude Fable 5
16.1
Claude Fable 5.2
41.3
Claude Opus 5.5
21.3
SimpleBench
Claude Fable 5.2 leads by +7.8
SimpleBench · tests fundamental reasoning capabilities with straightforward problems designed to expose gaps in basic logical and spatial thinking.
Claude Fable 5
78.3
Claude Fable 5.2
93.9
Claude Opus 5.5
86.1
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
70.7
Claude Fable 5.2
94.0
Claude Opus 5.5
72.2
Artificial Analysis · Quality Index
Claude Fable 5 leads by +2.2
Claude Fable 5
59.9
Claude Opus 5.5
57.6
Frontiercode
Claude Opus 5.5 leads by +1.2
Claude Fable 5
53.5
Claude Opus 5.5
54.6
Mirrorcode
Claude Opus 5.5 leads by +25.6
Claude Fable 5
70.0
Claude Opus 5.5
95.6
PostTrainBench
Claude Opus 5.5 leads by +6.5
Claude Fable 5
37.3
Claude Opus 5.5
43.8
SpireClimb
Claude Fable 5.2 leads by +13.8
Claude Fable 5.2
19.6
Claude Opus 5.5
5.8
WeirdML v3
Claude Opus 5.5 leads by +24.4
Claude Fable 5
31.0
Claude Opus 5.5
55.4
Full benchmark table
| Benchmark | Claude Fable 5 | Claude Fable 5.2 | Claude Opus 5.5 |
|---|---|---|---|
APEX-Agents APEX-Agents · evaluates AI agents on complex, multi-step tasks requiring planning, tool use, and autonomous decision-making in realistic environments. | 63.6 | 80.1 | 73.5 |
ARC-AGI ARC-AGI · the original Abstraction and Reasoning Corpus, testing whether AI can solve novel visual pattern recognition tasks without memorization. | 98.5 | 98.5 | 98.5 |
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 | 93.8 | 93.3 |
Chess Puzzles Chess Puzzles · tests strategic and tactical reasoning by having models solve chess puzzle positions, evaluating lookahead and pattern recognition abilities. | 44.2 | 77.9 | 65.3 |
Dtbench | 97.3 | 98.7 | 98.2 |
Ebr Bench | 39.5 | 90.5 | 71.4 |
FrontierMath-Tier-4-v2-Private | 90.2 | 100.0 | 95.0 |
FrontierMath-Tiers-1-3-v2-Private | 91.6 | 100.0 | 96.0 |
Frontierswe | 47.0 | 69.9 | 62.3 |
Furniture Assembly | 8.3 | 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. | 84.5 | 95.7 | 91.1 |
Lmca | 71.9 | 83.1 | 80.3 |
Mystery Game Puzzles | 47.1 | 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. | 100.0 | 99.7 | 100.0 |
Proofbench | 95.0 | 100.0 | 100.0 |
Remote Labor Index | 16.1 | 41.3 | 21.3 |
SimpleBench SimpleBench · tests fundamental reasoning capabilities with straightforward problems designed to expose gaps in basic logical and spatial thinking. | 78.3 | 93.9 | 86.1 |
SimpleQA Verified SimpleQA Verified · short factual questions with verified answers, measuring factual accuracy and the tendency to hallucinate or provide incorrect information. | 70.7 | 94.0 | 72.2 |
Artificial Analysis · Quality Index | 59.9 | n/a | 57.6 |
Frontiercode | 53.5 | n/a | 54.6 |
Mirrorcode | 70.0 | n/a | 95.6 |
PostTrainBench | 37.3 | n/a | 43.8 |
SpireClimb | n/a | 19.6 | 5.8 |
WeirdML v3 | 31.0 | n/a | 55.4 |
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 | |
| $8.00 | $40.00 | 1.0M tokens (~500 books) | $160.00 | |
| $4.00 | $20.00 | 1.0M tokens (~500 books) | $80.00 |
People also compared