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Claude Opus 4.8 vs LongCat-2.0

Claude Opus 4.8 leads in 3 of 8 categories

Arena ELO

Tie

Cheaper

Claude Opus 4.8

Faster

Tie

Detailed Comparison

CategoryClaude Opus 4.8LongCat-2.0
ProviderAnthropic Meituan
Context Window200K WIN128K
Input Price ($/1M)$15 WINN/A
Output Price ($/1M)$75 WINN/A
Arena ELON/A N/A
CodingN/A N/A
ReasoningN/A N/A
Speed (tokens/sec)N/A N/A
Open SourceNo Yes

Frequently Asked Questions

Which has a larger context window?

Claude Opus 4.8 supports 200K context, while LongCat-2.0 supports 128K.

Is Claude Opus 4.8 or LongCat-2.0 open source?

Claude Opus 4.8 is proprietary. LongCat-2.0 is open source.

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