Compare · ModelsLive · 2 picked · head to head
Claude Fable 5.1 vs GPT-6.1 Sol
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
GPT-6.1 Sol wins on 10/20 benchmarks
GPT-6.1 Sol wins 10 of 20 shared benchmarks. Leads in reasoning · knowledge · math.
Category leads
speed·Claude Fable 5.1agentic·Claude Fable 5.1reasoning·GPT-6.1 Solknowledge·GPT-6.1 Solgeneral·Claude Fable 5.1coding·Claude Fable 5.1math·GPT-6.1 Sol
Hype vs Reality
Attention vs performance
Claude Fable 5.1
#24 by perf·#11 by attention
GPT-6.1 Sol
#6 by perf·#5 by attention
Best value
GPT-6.1 Sol
5.6x better value than Claude Fable 5.1
Claude Fable 5.1
2.3 pts/$
$30.00/M
GPT-6.1 Sol
12.9 pts/$
$6.00/M
Vendor risk
Who is behind the model
Anthropic
$965.0B·Tier 1
OpenAI
$840.0B·Tier 1
Head to head
20 benchmarks · 2 models
Claude Fable 5.1GPT-6.1 Sol
Artificial Analysis · CritPt
GPT-6.1 Sol leads by +2.0
Claude Fable 5.1
29.7
GPT-6.1 Sol
31.7
Artificial Analysis · GDPval
Claude Fable 5.1 leads by +8.0
Claude Fable 5.1
62.7
GPT-6.1 Sol
54.7
Artificial Analysis · Humanity's Last Exam
Claude Fable 5.1 leads by +6.2
Claude Fable 5.1
59.1
GPT-6.1 Sol
52.9
Artificial Analysis · Long Context Reasoning
Claude Fable 5.1 leads by +2.3
Claude Fable 5.1
85.3
GPT-6.1 Sol
83.0
Artificial Analysis · Quality Index
Claude Fable 5.1 leads by +1.5
Claude Fable 5.1
53.4
GPT-6.1 Sol
51.8
Artificial Analysis · SciCode
Claude Fable 5.1 leads by +8.9
Claude Fable 5.1
63.1
GPT-6.1 Sol
54.2
APEX-Agents
Claude Fable 5.1 leads by +8.6
APEX-Agents · evaluates AI agents on complex, multi-step tasks requiring planning, tool use, and autonomous decision-making in realistic environments.
Claude Fable 5.1
68.6
GPT-6.1 Sol
60.0
ARC-AGI
GPT-6.1 Sol leads by +1.0
ARC-AGI · the original Abstraction and Reasoning Corpus, testing whether AI can solve novel visual pattern recognition tasks without memorization.
Claude Fable 5.1
97.5
GPT-6.1 Sol
98.5
ARC-AGI-2
GPT-6.1 Sol leads by +4.2
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 5.1
90.0
GPT-6.1 Sol
94.2
Chess Puzzles
GPT-6.1 Sol leads by +21.0
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
GPT-6.1 Sol
66.3
Ebr Bench
Claude Fable 5.1 leads by +2.9
Claude Fable 5.1
57.1
GPT-6.1 Sol
54.3
Frontiercode
Claude Fable 5.1 leads by +0.7
Claude Fable 5.1
50.9
GPT-6.1 Sol
50.2
FrontierMath-Tier-4-v2-Private
GPT-6.1 Sol leads by +12.2
Claude Fable 5.1
87.8
GPT-6.1 Sol
100.0
FrontierMath-Tiers-1-3-v2-Private
GPT-6.1 Sol leads by +3.5
Claude Fable 5.1
90.2
GPT-6.1 Sol
93.7
Furniture Assembly
GPT-6.1 Sol leads by +14.3
Claude Fable 5.1
57.1
GPT-6.1 Sol
71.4
Mystery Game Puzzles
GPT-6.1 Sol leads by +24.2
Claude Fable 5.1
53.7
GPT-6.1 Sol
78.0
OTIS Mock AIME 2024-2025
OTIS Mock AIME 2024-2025 · simulated American Invitational Mathematics Examination problems testing advanced problem-solving skills.
Claude Fable 5.1
100.0
GPT-6.1 Sol
100.0
Proofbench
Claude Fable 5.1 leads by +1.0
Claude Fable 5.1
100.0
GPT-6.1 Sol
99.0
SimpleQA Verified
GPT-6.1 Sol leads by +3.1
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
GPT-6.1 Sol
73.9
SpireClimb
GPT-6.1 Sol leads by +22.7
Claude Fable 5.1
2.0
GPT-6.1 Sol
24.7
Full benchmark table
| Benchmark | Claude Fable 5.1 | GPT-6.1 Sol |
|---|---|---|
Artificial Analysis · CritPt | 29.7 | 31.7 |
Artificial Analysis · GDPval | 62.7 | 54.7 |
Artificial Analysis · Humanity's Last Exam | 59.1 | 52.9 |
Artificial Analysis · Long Context Reasoning | 85.3 | 83.0 |
Artificial Analysis · Quality Index | 53.4 | 51.8 |
Artificial Analysis · SciCode | 63.1 | 54.2 |
APEX-Agents APEX-Agents · evaluates AI agents on complex, multi-step tasks requiring planning, tool use, and autonomous decision-making in realistic environments. | 68.6 | 60.0 |
ARC-AGI ARC-AGI · the original Abstraction and Reasoning Corpus, testing whether AI can solve novel visual pattern recognition tasks without memorization. | 97.5 | 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. | 90.0 | 94.2 |
Chess Puzzles Chess Puzzles · tests strategic and tactical reasoning by having models solve chess puzzle positions, evaluating lookahead and pattern recognition abilities. | 45.3 | 66.3 |
Ebr Bench | 57.1 | 54.3 |
Frontiercode | 50.9 | 50.2 |
FrontierMath-Tier-4-v2-Private | 87.8 | 100.0 |
FrontierMath-Tiers-1-3-v2-Private | 90.2 | 93.7 |
Furniture Assembly | 57.1 | 71.4 |
Mystery Game Puzzles | 53.7 | 78.0 |
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 | 100.0 | 99.0 |
SimpleQA Verified SimpleQA Verified · short factual questions with verified answers, measuring factual accuracy and the tendency to hallucinate or provide incorrect information. | 70.8 | 73.9 |
SpireClimb | 2.0 | 24.7 |
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 | |
| $2.00 | $10.00 | 1.1M tokens (~525 books) | $40.00 |