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Claude Fable 5 vs GPT-5.4

GPT-5.4 leads in 4 of 8 categories

Arena ELO

GPT-5.4

Cheaper

GPT-5.4

Faster

GPT-5.4

Detailed Comparison

CategoryClaude Fable 5GPT-5.4
ProviderAnthropic OpenAI
Context Window1M 1M
Input Price ($/1M)$10 $3 WIN
Output Price ($/1M)$50 $15 WIN
Arena ELON/A 1560 WIN
CodingN/A unknown
ReasoningN/A unknown
Speed (tokens/sec)N/A ~50 t/s WIN
Open SourceNo No

Frequently Asked Questions

Which is cheaper, Claude Fable 5 or GPT-5.4?

GPT-5.4 is approximately 70% cheaper than Claude Fable 5 per million tokens.

Which is better for coding, Claude Fable 5 or GPT-5.4?

Claude Fable 5 scores N/A on coding benchmarks, while GPT-5.4 scores unknown.

Which has a larger context window?

Claude Fable 5 supports 1M context, while GPT-5.4 supports 1M.

Is Claude Fable 5 or GPT-5.4 open source?

Claude Fable 5 is proprietary. GPT-5.4 is proprietary.