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Claude Haiku 5.5 vs GLM-5.3

Claude Haiku 5.5Anthropic
GLM-5.3Z.ai
Our take

GLM-5.3 wins 4 of 4 categories, but Claude Haiku 5.5 is 10.8× cheaper for everyday text work. Pick GLM-5.3 when quality matters most, Claude Haiku 5.5 at volume.

Overall4461Best
Coding5268Best
Writing2470Best
Support3467Best
Value5054Best
Input / 1M$0.10Best$1.40
Output / 1M$0.50Best$4.40
Blended / 1M$0.20Best$2.15
Context window1M1M
Open weightsNoYes
Released7 Oct 202614 Aug 2026

Your monthly bill

50k
Claude Haiku 5.5$40.00Cheapest
GLM-5.3$430
List prices, a quarter of the tokens as output. Scores are provisional, from Arena and Epoch AI.