GPT-5.5
OpenAI
Input / 1M$5.00Output / 1M$30.00Arena1471Value1001,000 coding edits$34.00
Face-off
GPT-5.5 vs GLM-5.2
GPT-5.5 versus GLM-5.2 on list price and published Arena rating. GPT-5.5 Arena 1471 · GLM-5.2 Arena 1470 Blended list price GPT-5.5 $23.75 and GLM-5.2 $3.65 per 1M tokens.
GPT-5.5OpenAIArena 1471$23.75 / 1MGPT-5.5 leads by 1 Arena pointsGPT-5.5 costs 6.5x more
GLM-5.2Zhipu · AlibabaArena 1470$3.65 / 1MGLM-5.2
Alibaba
Input / 1M$1.40Output / 1M$4.40Arena1470Value1361,000 coding edits$6.32
GPT-5.5 leads by 1 Arena points. GPT-5.5 costs 6.5x more, moving from GPT-5.5 to GLM-5.2. The 1,000-edit cost uses a planning assumption of 2,000 input and 800 output tokens, not a measured trace. Share this face-off. The link renders an Open Graph image of the two models.