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Claude Haiku 5.5 vs GLM-5.3-Flash

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

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.

Overall4455Best
Coding5269Best
Writing2464Best
Support3467Best
Value5060Best
Input / 1M$0.10Best$0.15
Output / 1M$0.50$0.50
Blended / 1M$0.20Best$0.24
Context window1M1M
Open weightsNoYes
Released7 Oct 202626 Aug 2026

Your monthly bill

50k
Claude Haiku 5.5$40.00Cheapest
GLM-5.3-Flash$47.50
List prices, a quarter of the tokens as output. Scores are provisional, from Arena and Epoch AI.