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Claude Opus 4.8 vs Claude Opus 5

Claude Opus 4.8 leads in 3 of 8 categories

Arena ELO

Claude Opus 4.8

Cheaper

Claude Opus 4.8

Faster

Tie

Detailed Comparison

CategoryClaude Opus 4.8Claude Opus 5
ProviderAnthropic Anthropic
Context Window200K 200K
Input Price ($/1M)$5 WIN$15
Output Price ($/1M)$25 WIN$75
Arena ELO1580 WINN/A
CodingN/A N/A
ReasoningN/A N/A
Speed (tokens/sec)N/A N/A
Open SourceNo No

Frequently Asked Questions

Which is cheaper, Claude Opus 4.8 or Claude Opus 5?

Claude Opus 4.8 is approximately 67% cheaper than Claude Opus 5 per million tokens.

Which has a larger context window?

Claude Opus 4.8 supports 200K context, while Claude Opus 5 supports 200K.

Is Claude Opus 4.8 or Claude Opus 5 open source?

Claude Opus 4.8 is proprietary. Claude Opus 5 is proprietary.

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