Compare · ModelsLive · 2 picked · head to head
Claude Fable 5.1 vs GPT-5.5 Pro
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
GPT-5.5 Pro wins on 0/0 benchmarks
Not enough overlapping benchmarks to declare a winner yet · Claude Fable 5.1 · GPT-5.5 Pro are still filling in scores.
Hype vs Reality
Attention vs performance
Claude Fable 5.1
#16 by perf·#12 by attention
GPT-5.5 Pro
#1 by perf·#4 by attention
Best value
Claude Fable 5.1
2.8x better value than GPT-5.5 Pro
Claude Fable 5.1
2.4 pts/$
$30.00/M
GPT-5.5 Pro
0.8 pts/$
$105.00/M
Vendor risk
Who is behind the model
Anthropic
$965.0B·Tier 1
OpenAI
$840.0B·Tier 1
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 | |
| $30.00 | $180.00 | 400K tokens (~200 books) | $675.00 |