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Claude Fable 5 vs Claude Opus 4.5

Claude Opus 4.5 leads in 4 of 8 categories

Arena ELO

Claude Opus 4.5

Cheaper

Claude Opus 4.5

Faster

Claude Opus 4.5

Detailed Comparison

CategoryClaude Fable 5Claude Opus 4.5
ProviderAnthropic Anthropic
Context Window1M WIN200K
Input Price ($/1M)$10 $5 WIN
Output Price ($/1M)$50 $25 WIN
Arena ELON/A 1380 WIN
CodingN/A 80.9% SWE-bench
ReasoningN/A unknown
Speed (tokens/sec)N/A ~35 t/s WIN
Open SourceNo No

Frequently Asked Questions

Which is cheaper, Claude Fable 5 or Claude Opus 4.5?

Claude Opus 4.5 is approximately 50% cheaper than Claude Fable 5 per million tokens.

Which is better for coding, Claude Fable 5 or Claude Opus 4.5?

Claude Fable 5 scores N/A on coding benchmarks, while Claude Opus 4.5 scores 80.9% SWE-bench.

Which has a larger context window?

Claude Fable 5 supports 1M context, while Claude Opus 4.5 supports 200K.

Is Claude Fable 5 or Claude Opus 4.5 open source?

Claude Fable 5 is proprietary. Claude Opus 4.5 is proprietary.

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