GLM 5.1 vs Claude 3.7 Sonnet (high output)

Detailed comparison of capabilities, features, and performance.

GLM 5.1

GLM 5.1

Z.ai
VS
Claude 3.7 Sonnet (high output)

Claude 3.7 Sonnet (high output)

Anthropic
Feature GLM 5.1 Claude 3.7 Sonnet (high output)
AI Lab Z.ai Anthropic
Context Size 202,000 tokens 204,800 tokens
Max Output Size 25,344 tokens 128,000 tokens
Frontier Model No Yes
Vision Support No Yes
Description Z.ai's next-generation 754B MoE flagship model built for agentic engineering, with stronger coding capabilities and sustained performance over long-horizon tasks. 202K context window. The latest Sonnet 3.7 model from Anthropic

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