Head to head

GLM-5.3-Flash vs Claude Haiku 5.5

⚖ GLM-5.3-Flash wins 4 of 4 categories, but Claude Haiku 5.5 is 1.2× cheaper for everyday text work. Pick GLM-5.3-Flash when quality matters most, Claude Haiku 5.5 at volume.

Scores by category

CategoryGLM-5.3-FlashClaude Haiku 5.5
Overall5544
Writing6424
Support6734
Coding6952

Provisional scores, 0 to 100 among the models we track, from Arena and Epoch AI. Value weighs the overall score against cost.

Price and specs

GLM-5.3-FlashClaude Haiku 5.5
VendorZ.aiAnthropic
Released2026-08-262026-10-07
Context window1M1M
Open weightsYesNo
Input per 1M tokens$0.15$0.10
Output per 1M tokens$0.50$0.50
Per 1,000 tasks$0.48$0.40
glm-5.3-flash.app
GLM-5.3-FlashFull details →Alternatives to GLM-5.3-Flash →
claude-haiku-5-5.app
Claude Haiku 5.5Full details →Alternatives to Claude Haiku 5.5 →
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