Updated March 10, 2026
01.AI builds the Yi series of open-source language models.
Zhipu AI develops the GLM family of open-source large language models.
What each tool does well, and the limitations to keep in mind.
Pros
Cons
Pros
Cons
Respan lets you trace LLM and agent calls across any model or framework, A/B test prompts on production traffic, and route requests across 500+ models through one gateway.