AnthropicClaude Fable 5VSOpenAIGPT-5.4 Pro
Our Take
Standardized reasoning and coding benchmarks are currently pending verification for one or both of these models. We recommend testing Claude Fable 5 and GPT-5.4 Pro directly in their respective provider playgrounds to see which fits your specific prompt styles best.
Was this recommendation helpful?
Benchmarks & Scores
Coding (swe-bench-pro)
80.3%complex codebases, multi-file repositories, and architectural planning
Reasoning (gpqa-diamond)Winner (+26.5%)
94.1%graduate-level science QA
Cost & Context
Cost (per 1M tokens)
$20.00Input: $10.00 | Output: $50.00Context WindowLarger
1.05M tokensBenchmarks & Scores
Coding (swe-bench-pro)
N/Acomplex codebases, multi-file repositories, and architectural planning
Reasoning (gpqa-diamond)
67.6%graduate-level science QA
Cost & Context
Cost (per 1M tokens)145.5x cheaper
$0.14Input: $0.05 | Output: $0.40Context Window
400k tokensFrequently Asked Questions about Claude Fable 5 vs GPT-5.4 Pro
GPT-5.4 Pro is cheaper than Claude Fable 5. GPT-5.4 Pro has a blended cost of $0.14/1M tokens, which is about 145.5x cheaper than Claude Fable 5 at $20.00/1M tokens.
Related Matchups
Explore similar comparisons for Claude Fable 5 and GPT-5.4 Pro.
Do you want to find a model for your constraints?
Use our interactive model finder to filter LLMs by reasoning capability, coding performance, cost, and context length.