Z.AI: GLM 4 32B

GLM-4-32B is Z.AI's cost-effective dense model, offering strong tool use, code generation, and search capabilities in a 32B parameter architecture pre-trained on 15T tokens.

GLM-4-32B-0414 achieves good results in engineering code, Artifact generation, function calling, search-based Q&A, and report generation—with some benchmarks approaching GPT-4o and DeepSeek-V3. — Z.AI

Overview

Released April 14, 2025, the GLM-4-32B series introduced dense 32B models alongside reasoning (Z1) and rumination variants. Unlike the later MoE models (GLM-4.5+), this is a fully dense architecture that activates all 32B parameters, making deployment simpler but less efficient than MoE alternatives.

Key Capabilities

• 32B parameters (dense architecture)
• 128K context window
• 15T training tokens (including synthetic reasoning data)
• Strong tool use: Search, function calling, code execution
• Enterprise data processing: Financial analysis, ticket inspection

Model Variants (April 2025 Release)

Model	Focus	Capabilities
GLM-4-32B-0414	Base	Code generation, artifacts, tool calling
GLM-Z1-32B-0414	Reasoning	Deep thinking, math, logic
GLM-Z1-Rumination-32B-0414	Research	Extended reasoning with search tools
GLM-Z1-9B-0414	Compact	Efficient math reasoning

When to Use GLM-4-32B

Choose GLM-4-32B when you need:

• Cost-effective general-purpose model
• Dense architecture for simpler deployment
• Strong tool use and function calling
• Enterprise data extraction and analysis
• Batch operations like translation

Choose GLM-4.5+ (MoE) when you need:

• Agent-native capabilities
• Hybrid thinking modes
• Higher capability ceiling
• More efficient inference (MoE activates fewer parameters)

Choose GLM-Z1-32B when you need:

• Complex mathematical reasoning
• Deep thinking for logic puzzles
• Performance approaching DeepSeek-R1 at smaller scale

Role in Series

GLM-4 dense models bridge ChatGLM-3 and the MoE era:

1. GLM-4 (Jun 2024): Original GLM-4 series
2. GLM-4-32B (Apr 2025): Dense 32B with reasoning variants (this model)
3. GLM-4.5 (Jul 2025): First MoE architecture, 355B/32B active
4. GLM-4.5+ (Jul 2025+): MoE models with agent-native design

Links

• Z.AI API Documentation
• HuggingFace
• GitHub