Overview
GLM 5.1
Author
Z.aiPhi 4
Author
MicrosoftGLM 5.1
Context length
205KtokensPhi 4
Context length
16KtokensGLM 5.1
Reasoning
Phi 4
Reasoning
GLM 5.1
Input modalities
Phi 4
Input modalities
GLM 5.1
Output modalities
Phi 4
Output modalities
Compare GLM 5.1 from Z.ai and Phi 4 from Microsoft on key metrics including benchmarks, price, context length, and other model features. Access both models and hundreds of others through the OpenRouter API.
GLM 5.1 and Phi 4 are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
GLM 5.1, from Z.ai, has a 204,800-token context window and is priced at $0.966/M tokens input, $3.036/M tokens output on OpenRouter.
Phi 4, from Microsoft, has a 16,384-token context window and is priced at $0.07/M tokens input, $0.14/M tokens output on OpenRouter.