Claude Opus 4.6 vs LongCat-2.0

Claude Opus 4.6 leads in 5 of 8 categories

Arena ELO

Claude Opus 4.6

Cheaper

Claude Opus 4.6

Faster

Claude Opus 4.6

Detailed Comparison

Category	Claude Opus 4.6	LongCat-2.0
Provider	Anthropic	Meituan
Context Window	1M WIN	128K
Input Price ($/1M)	$5 WIN	N/A
Output Price ($/1M)	$25 WIN	N/A
Arena ELO	1549 WIN	N/A
Coding	80.8% SWE-bench	N/A
Reasoning	65.4% Terminal-Bench	N/A
Speed (tokens/sec)	~40 t/s WIN	N/A
Open Source	No	Yes

Frequently Asked Questions

Which is better for coding, Claude Opus 4.6 or LongCat-2.0?

Claude Opus 4.6 scores 80.8% SWE-bench on coding benchmarks, while LongCat-2.0 scores N/A.

Which has a larger context window?

Claude Opus 4.6 supports 1M context, while LongCat-2.0 supports 128K.

Is Claude Opus 4.6 or LongCat-2.0 open source?

Claude Opus 4.6 is proprietary. LongCat-2.0 is open source.

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