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GPT-6.1 Sol vs GLM-5.3-Flash

GPT-6.1 SolOpenAI
GLM-5.3-FlashZ.ai
Our take

GPT-6.1 Sol and GLM-5.3-Flash trade wins evenly on our provisional scores, but GLM-5.3-Flash is 16.8× cheaper for everyday text work. Pick GPT-6.1 Sol when quality matters most, GLM-5.3-Flash at volume.

Overall74Best55
Coding78Best69
Writing5864Best
Support5867Best
Value64Best60
Input / 1M$2.00$0.15Best
Output / 1M$10.00$0.50Best
Blended / 1M$4.00$0.24Best
Context window1.1MBest1M
Open weightsNoYes
Released29 Sept 202626 Aug 2026

Your monthly bill

50k
GPT-6.1 Sol$800
GLM-5.3-Flash$47.50Cheapest
List prices, a quarter of the tokens as output. Scores are provisional, from Arena and Epoch AI.
GPT-6.1 Sol vs GLM-5.3-Flash: scores, price and which to pick · Model Menu