Comparing 2 models

GPT-5.6 Luna vs GLM 5.2

Facts first, then task-specific rankings. A highlighted cell is better only for that row, not universally.

metric

Model 1GPT-5.6 Luna

Model 2GLM 5.2

Best for

Code Completion (#1)

Coding (#2)

Provider

openai

z-ai

Context

1.1MBest

1.0M

Input / 1M

$0.20Best

$0.97

Output / 1M

$1.20Best

$3.04

Tool use

yesBest

Vision

yesBest

—

Reasoning

yesBest

Open-weight

—

yesBest

Released

Jul 9, 2026

Jun 13, 2026

task evidence

How they place when the question changes

Lower ranks are better. “Best” marks the strongest option in this shortlist for that task.

Best LLM for Creative Writing —#7Best

Best LLM for JSON & Schema Output #1Best —

Best LLM for Massive Context #2Best #5

Best LLM for Business Writing —#7Best

Best LLM for Frontend & UI —#2Best

Best LLM for Image Understanding #6Best —

Best LLM for OpenClaw #3Best —

Best LLM for Coding —#2Best

Best LLM for Math & Reasoning —#6Best

Best LLM for Writing —#8Best

Best Cheap LLM for High Volume #2Best —

Best LLM for High-Volume Extraction #2Best —

Best Value LLM #4Best —

Best LLM for Document Parsing #5Best —

Best LLM for Agentic Coding #4 #3Best

Best LLM for Competition Math —#6Best

Best LLM for Autonomous Agents #3Best —

Best LLM for Charts & Diagrams #3Best —

Best LLM for Code Completion #1Best #4

Best LLM for Chat & Roleplay —#5Best

Best LLM for Computer & Browser Use #5 #2Best

Best LLM for Tool & Function Calling #5 #4Best

Best LLM for Debugging & Code Review #7 #3Best

Best LLM for Structured Data Extraction #1Best #5

Best LLM for AI Agents #5 #3Best