Overview
Phi 4
Author
MicrosoftGLM 5.1
Author
Z.aiPhi 4
Context length
16KtokensGLM 5.1
Context length
205KtokensPhi 4
Reasoning
GLM 5.1
Reasoning
Phi 4
Input modalities
GLM 5.1
Input modalities
Phi 4
Output modalities
GLM 5.1
Output modalities
Compare Phi 4 from Microsoft and GLM 5.1 from Z.ai on key metrics including benchmarks, price, context length, and other model features. Access both models and hundreds of others through the OpenRouter API.
Phi 4 and GLM 5.1 are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
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.
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.