Compare · ModelsLive · 2 picked · head to head
GPT-6 Astra vs Claude Fable 5.1
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
GPT-6 Astra wins on 17/27 benchmarks
GPT-6 Astra wins 17 of 27 shared benchmarks. Leads in reasoning · knowledge · general.
Category leads
speed·Claude Fable 5.1agentic·Claude Fable 5.1reasoning·GPT-6 Astraknowledge·GPT-6 Astrageneral·GPT-6 Astracoding·GPT-6 Astramath·GPT-6 Astra
Hype vs Reality
Attention vs performance
GPT-6 Astra
#9 by perf·#1 by attention
Claude Fable 5.1
#16 by perf·#12 by attention
Best value
GPT-6 Astra
1.1x better value than Claude Fable 5.1
GPT-6 Astra
2.6 pts/$
$30.00/M
Claude Fable 5.1
2.4 pts/$
$30.00/M
Vendor risk
Who is behind the model
OpenAI
$840.0B·Tier 1
Anthropic
$965.0B·Tier 1
Head to head
27 benchmarks · 2 models
GPT-6 AstraClaude Fable 5.1
Artificial Analysis · CritPt
GPT-6 Astra leads by +2.0
GPT-6 Astra
31.7
Claude Fable 5.1
29.7
Artificial Analysis · GDPval
Claude Fable 5.1 leads by +9.6
GPT-6 Astra
52.1
Claude Fable 5.1
61.7
Artificial Analysis · GPQA Diamond
GPT-6 Astra leads by +2.4
GPT-6 Astra
96.1
Claude Fable 5.1
93.7
Artificial Analysis · Humanity's Last Exam
Claude Fable 5.1 leads by +4.4
GPT-6 Astra
54.7
Claude Fable 5.1
59.1
Artificial Analysis · Long Context Reasoning
Claude Fable 5.1 leads by +4.6
GPT-6 Astra
80.7
Claude Fable 5.1
85.3
Artificial Analysis · Quality Index
Claude Fable 5.1 leads by +0.7
GPT-6 Astra
52.7
Claude Fable 5.1
53.4
Artificial Analysis · SciCode
Claude Fable 5.1 leads by +6.6
GPT-6 Astra
56.5
Claude Fable 5.1
63.1
APEX-Agents
Claude Fable 5.1 leads by +3.9
APEX-Agents · evaluates AI agents on complex, multi-step tasks requiring planning, tool use, and autonomous decision-making in realistic environments.
GPT-6 Astra
64.7
Claude Fable 5.1
68.6
ARC-AGI
GPT-6 Astra leads by +1.0
ARC-AGI · the original Abstraction and Reasoning Corpus, testing whether AI can solve novel visual pattern recognition tasks without memorization.
GPT-6 Astra
98.5
Claude Fable 5.1
97.5
ARC-AGI-2
GPT-6 Astra leads by +5.0
ARC-AGI-2 · the second iteration of the Abstraction and Reasoning Corpus, testing novel pattern recognition and abstract reasoning without prior training data.
GPT-6 Astra
95.0
Claude Fable 5.1
90.0
Chess Puzzles
GPT-6 Astra leads by +26.3
Chess Puzzles · tests strategic and tactical reasoning by having models solve chess puzzle positions, evaluating lookahead and pattern recognition abilities.
GPT-6 Astra
70.5
Claude Fable 5.1
44.2
Dtbench
Claude Fable 5.1 leads by +0.5
GPT-6 Astra
95.5
Claude Fable 5.1
96.0
Ebr Bench
GPT-6 Astra leads by +19.0
GPT-6 Astra
76.2
Claude Fable 5.1
57.1
Frontiercode
GPT-6 Astra leads by +2.4
GPT-6 Astra
53.3
Claude Fable 5.1
50.9
FrontierMath-Tier-4-v2-Private
GPT-6 Astra leads by +9.8
GPT-6 Astra
97.6
Claude Fable 5.1
87.8
FrontierMath-Tiers-1-3-v2-Private
GPT-6 Astra leads by +3.5
GPT-6 Astra
93.7
Claude Fable 5.1
90.2
Frontierswe
GPT-6 Astra leads by +9.2
GPT-6 Astra
65.5
Claude Fable 5.1
56.3
Furniture Assembly
GPT-6 Astra leads by +14.3
GPT-6 Astra
71.4
Claude Fable 5.1
57.1
HLE
GPT-6 Astra leads by +8.7
HLE (Humanity's Last Exam) · a reasoning benchmark designed to be the hardest public evaluation of AI. Questions span mathematics, physics, philosophy, and logic · curated to be at or beyond the frontier of human expert capability. Tested with and without tool augmentation. Claude Opus 4.7 scores 46.9% without tools and 54.7% with tools · making it one of the few benchmarks where the top score is below 60%.
GPT-6 Astra
52.5
Claude Fable 5.1
43.8
Lmca
Claude Fable 5.1 leads by +1.3
GPT-6 Astra
75.7
Claude Fable 5.1
77.0
Mirrorcode
Claude Fable 5.1 leads by +26.6
GPT-6 Astra
46.7
Claude Fable 5.1
73.3
Mystery Game Puzzles
GPT-6 Astra leads by +28.6
GPT-6 Astra
82.4
Claude Fable 5.1
53.7
OTIS Mock AIME 2024-2025
OTIS Mock AIME 2024-2025 · simulated American Invitational Mathematics Examination problems testing advanced problem-solving skills.
GPT-6 Astra
100.0
Claude Fable 5.1
100.0
Proofbench
Claude Fable 5.1 leads by +1.0
GPT-6 Astra
99.0
Claude Fable 5.1
100.0
Remote Labor Index
GPT-6 Astra leads by +2.9
GPT-6 Astra
20.8
Claude Fable 5.1
17.9
SimpleQA Verified
GPT-6 Astra leads by +4.8
SimpleQA Verified · short factual questions with verified answers, measuring factual accuracy and the tendency to hallucinate or provide incorrect information.
GPT-6 Astra
75.6
Claude Fable 5.1
70.8
WeirdML
GPT-6 Astra leads by +0.7
WeirdML · tests models on unusual and adversarial machine learning tasks that require creative problem-solving beyond standard patterns.
GPT-6 Astra
93.6
Claude Fable 5.1
92.9
Full benchmark table
| Benchmark | GPT-6 Astra | Claude Fable 5.1 |
|---|---|---|
Artificial Analysis · CritPt | 31.7 | 29.7 |
Artificial Analysis · GDPval | 52.1 | 61.7 |
Artificial Analysis · GPQA Diamond | 96.1 | 93.7 |
Artificial Analysis · Humanity's Last Exam | 54.7 | 59.1 |
Artificial Analysis · Long Context Reasoning | 80.7 | 85.3 |
Artificial Analysis · Quality Index | 52.7 | 53.4 |
Artificial Analysis · SciCode | 56.5 | 63.1 |
APEX-Agents APEX-Agents · evaluates AI agents on complex, multi-step tasks requiring planning, tool use, and autonomous decision-making in realistic environments. | 64.7 | 68.6 |
ARC-AGI ARC-AGI · the original Abstraction and Reasoning Corpus, testing whether AI can solve novel visual pattern recognition tasks without memorization. | 98.5 | 97.5 |
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. | 95.0 | 90.0 |
Chess Puzzles Chess Puzzles · tests strategic and tactical reasoning by having models solve chess puzzle positions, evaluating lookahead and pattern recognition abilities. | 70.5 | 44.2 |
Dtbench | 95.5 | 96.0 |
Ebr Bench | 76.2 | 57.1 |
Frontiercode | 53.3 | 50.9 |
FrontierMath-Tier-4-v2-Private | 97.6 | 87.8 |
FrontierMath-Tiers-1-3-v2-Private | 93.7 | 90.2 |
Frontierswe | 65.5 | 56.3 |
Furniture Assembly | 71.4 | 57.1 |
HLE HLE (Humanity's Last Exam) · a reasoning benchmark designed to be the hardest public evaluation of AI. Questions span mathematics, physics, philosophy, and logic · curated to be at or beyond the frontier of human expert capability. Tested with and without tool augmentation. Claude Opus 4.7 scores 46.9% without tools and 54.7% with tools · making it one of the few benchmarks where the top score is below 60%. | 52.5 | 43.8 |
Lmca | 75.7 | 77.0 |
Mirrorcode | 46.7 | 73.3 |
Mystery Game Puzzles | 82.4 | 53.7 |
OTIS Mock AIME 2024-2025 OTIS Mock AIME 2024-2025 · simulated American Invitational Mathematics Examination problems testing advanced problem-solving skills. | 100.0 | 100.0 |
Proofbench | 99.0 | 100.0 |
Remote Labor Index | 20.8 | 17.9 |
SimpleQA Verified SimpleQA Verified · short factual questions with verified answers, measuring factual accuracy and the tendency to hallucinate or provide incorrect information. | 75.6 | 70.8 |
WeirdML WeirdML · tests models on unusual and adversarial machine learning tasks that require creative problem-solving beyond standard patterns. | 93.6 | 92.9 |
Pricing · per 1M tokens · projected $/mo at 10M tokens
| Model | Input | Output | Context | Projected $/mo |
|---|---|---|---|---|
| $10.00 | $50.00 | 1.1M tokens (~525 books) | $200.00 | |
| $10.00 | $50.00 | 1.0M tokens (~500 books) | $200.00 |