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Claude Opus 5 vs LongCat-2.0

LongCat-2.0 leads in 2 of 8 categories

Arena ELO

Tie

Cheaper

LongCat-2.0

Faster

Tie

Detailed Comparison

CategoryClaude Opus 5LongCat-2.0
ProviderAnthropic Meituan
Context Window200K WIN128K
Input Price ($/1M)$15 $0.2 WIN
Output Price ($/1M)$75 $1 WIN
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 is cheaper, Claude Opus 5 or LongCat-2.0?

LongCat-2.0 is approximately 99% cheaper than Claude Opus 5 per million tokens.

Which has a larger context window?

Claude Opus 5 supports 200K context, while LongCat-2.0 supports 128K.

Is Claude Opus 5 or LongCat-2.0 open source?

Claude Opus 5 is proprietary. LongCat-2.0 is open source.

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