GLM-5.3 (open-weight) beat Anthropic/OpenAI models – for 1/5 the cost

The GLM-5.3 open-weight model has reportedly outperformed models from Anthropic and OpenAI, achieving a 100% pass rate and a 9.3 rubric score at approximately one-fifth the cost of gpt-5.5. While gpt-5.5 offers faster Time To First Token (TTFT) at 13.2s compared to GLM-5.3's 16.3s, GLM-5.3 is presented as a cost-effective option. Other models like gpt-5.6-luna are noted for low-risk tasks, haiku-4-5 for accuracy, and sonnet-4-6 for quality and speed.