Comprehensive side-by-side LLM comparison
o1 offers 95.9K more tokens in context window than GLM 5. GLM 5 is $71.64 cheaper per million tokens. o1 supports multimodal inputs. Both models have their strengths depending on your specific coding needs.
Zhipu AI
GLM-5 is a large language model from Zhipu AI with 745 billion total parameters and 44 billion active parameters per inference, designed for agentic intelligence, advanced reasoning, and frontier-level performance. It features a 200K token context window and targets complex multi-step tasks requiring sustained reasoning and tool use. GLM-5 is available via Zhipu AI's Z.ai platform under an MIT license.
OpenAI
OpenAI o1, released by OpenAI in December 2024, is a reasoning-focused large language model that applies extended chain-of-thought processing before generating responses. It features a 200K token context window and native image understanding, demonstrating strong performance on STEM benchmarks requiring multi-step reasoning. o1 targets mathematics, science, and coding tasks where careful deliberation over the problem produces more accurate outputs than direct generation.
1 year newer

o1
OpenAI
2024-12-05
GLM 5
Zhipu AI
2026-02-11
Cost per million tokens (USD)
GLM 5
o1
Context window and performance specifications
o1
2023-10
Available providers and their performance metrics
GLM 5
Zhipu AI
o1
GLM 5
o1
GLM 5
o1
OpenAI