Compare · ModelsLive · 2 picked · head to head
Claude Fable 5.1 vs GPT-5.5
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
Claude Fable 5.1 wins on 1/1 benchmarks
Claude Fable 5.1 wins 1 of 1 shared benchmarks. Leads in reasoning.
Category leads
reasoning·Claude Fable 5.1
Hype vs Reality
Attention vs performance
Claude Fable 5.1
#16 by perf·#12 by attention
GPT-5.5
#2 by perf·#4 by attention
Best value
GPT-5.5
2.0x better value than Claude Fable 5.1
Claude Fable 5.1
2.4 pts/$
$30.00/M
GPT-5.5
4.9 pts/$
$17.50/M
Vendor risk
Who is behind the model
Anthropic
$965.0B·Tier 1
OpenAI
$840.0B·Tier 1
Head to head
1 benchmark · 2 models
Claude Fable 5.1GPT-5.5
ARC-AGI
Claude Fable 5.1 leads by +2.5
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-5.5
95.0
Full benchmark table
| Benchmark | Claude Fable 5.1 | GPT-5.5 |
|---|---|---|
ARC-AGI ARC-AGI · the original Abstraction and Reasoning Corpus, testing whether AI can solve novel visual pattern recognition tasks without memorization. | 97.5 | 95.0 |
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 | |
| $5.00 | $30.00 | 400K tokens (~200 books) | $112.50 |