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Claude Opus 4.6 vs GLM-5.2

Claude Opus 4.6 leads in 3 of 8 categories

Arena ELO

Claude Opus 4.6

Cheaper

GLM-5.2

Faster

Claude Opus 4.6

Detailed Comparison

CategoryClaude Opus 4.6GLM-5.2
ProviderAnthropic Z.ai
Context Window1M WIN128K
Input Price ($/1M)$5 $1.4 WIN
Output Price ($/1M)$25 $4.4 WIN
Arena ELO1561 WINN/A
Coding80.8% SWE-bench N/A
Reasoning65.4% Terminal-Bench N/A
Speed (tokens/sec)~40 t/s WINN/A
Open SourceNo Yes

Frequently Asked Questions

Which is cheaper, Claude Opus 4.6 or GLM-5.2?

GLM-5.2 is approximately 81% cheaper than Claude Opus 4.6 per million tokens.

Which is better for coding, Claude Opus 4.6 or GLM-5.2?

Claude Opus 4.6 scores 80.8% SWE-bench on coding benchmarks, while GLM-5.2 scores N/A.

Which has a larger context window?

Claude Opus 4.6 supports 1M context, while GLM-5.2 supports 128K.

Is Claude Opus 4.6 or GLM-5.2 open source?

Claude Opus 4.6 is proprietary. GLM-5.2 is open source.

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