Comprehensive side-by-side LLM comparison
. Both models have their strengths depending on your specific coding needs.
Zhipu AI
GLM-4.6, released by Zhipu AI in September 2025, is a large language model with approximately 357 billion parameters from the GLM-4 family, featuring an expanded 200K token context window. It supports strong mathematical reasoning, coding, and agentic orchestration tasks. GLM-4.6 targets enterprise-ready open-source deployments under an MIT license, with availability through Zhipu AI's Z.ai platform.
OpenAI
GPT-5.1 Codex, released by OpenAI in November 2025, is a coding-specialized model from the GPT-5.1 family engineered for software engineering tasks including code generation, multi-file editing, and agentic development. It targets developers and automated coding pipelines requiring a GPT-5.1-generation model tuned for programming.
1 month newer
GLM-4.6
Zhipu AI
2025-09-30

GPT-5.1 Codex
OpenAI
2025-11
Context window and performance specifications
Available providers and their performance metrics
GLM-4.6
Zhipu AI
GPT-5.1 Codex
GLM-4.6
GPT-5.1 Codex
GLM-4.6
GPT-5.1 Codex