Compare · ModelsLive · 2 picked · head to head
Claude Fable 5.2 vs GPT-6 Astra
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
Claude Fable 5.2 wins on 7/10 benchmarks
Claude Fable 5.2 wins 7 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
GPT-6 Astra
#9 by perf·#2 by attention
Best value
Claude Fable 5.2
1.4x better value than GPT-6 Astra
Claude Fable 5.2
3.6 pts/$
$24.00/M
GPT-6 Astra
2.5 pts/$
$30.00/M
Vendor risk
Who is behind the model
Anthropic
$965.0B·Tier 1
OpenAI
$840.0B·Tier 1
Head to head
10 benchmarks · 2 models
Claude Fable 5.2GPT-6 Astra
Chess Puzzles
Claude Fable 5.2 leads by +3.2
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
GPT-6 Astra
74.8
Ebr Bench
Claude Fable 5.2 leads by +14.3
Claude Fable 5.2
90.5
GPT-6 Astra
76.2
FrontierMath-Tier-4-v2-Private
Claude Fable 5.2 leads by +2.4
Claude Fable 5.2
100.0
GPT-6 Astra
97.6
FrontierMath-Tiers-1-3-v2-Private
Claude Fable 5.2 leads by +1.4
Claude Fable 5.2
100.0
GPT-6 Astra
98.6
Furniture Assembly
Claude Fable 5.2 leads by +14.3
Claude Fable 5.2
85.7
GPT-6 Astra
71.4
GPQA diamond
GPT-6 Astra leads by +2.6
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
GPT-6 Astra
98.3
Mystery Game Puzzles
Claude Fable 5.2 leads by +6.6
Claude Fable 5.2
89.0
GPT-6 Astra
82.4
OTIS Mock AIME 2024-2025
GPT-6 Astra 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
GPT-6 Astra
100.0
SimpleQA Verified
Claude Fable 5.2 leads by +18.4
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
GPT-6 Astra
75.6
SpireClimb
GPT-6 Astra leads by +14.4
Claude Fable 5.2
19.6
GPT-6 Astra
34.0
Full benchmark table
| Benchmark | Claude Fable 5.2 | GPT-6 Astra |
|---|---|---|
Chess Puzzles Chess Puzzles · tests strategic and tactical reasoning by having models solve chess puzzle positions, evaluating lookahead and pattern recognition abilities. | 77.9 | 74.8 |
Ebr Bench | 90.5 | 76.2 |
FrontierMath-Tier-4-v2-Private | 100.0 | 97.6 |
FrontierMath-Tiers-1-3-v2-Private | 100.0 | 98.6 |
Furniture Assembly | 85.7 | 71.4 |
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 | 98.3 |
Mystery Game Puzzles | 89.0 | 82.4 |
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 | 75.6 |
SpireClimb | 19.6 | 34.0 |
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 | |
| $10.00 | $50.00 | 1.1M tokens (~525 books) | $200.00 |
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