Comparing 2 models

GPT-5.6 Luna vs GPT-5.6 Sol

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

metric

Model 1GPT-5.6 Luna

Model 2GPT-5.6 Sol

Best for

Code Completion (#1)

a General Assistant (#1)

Provider

openai

Context

1.1MBest

Input / 1M

$0.20Best

Output / 1M

$1.20Best

$10

Tool use

yesBest

Vision

yesBest

Reasoning

yesBest

Open-weight

—

Released

Jul 9, 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 Grounded RAG —#1Best

Best LLM for Creative Writing —#2Best

Best LLM for Everyday Translation —#2Best

Best LLM for Hermes Agent —#1Best

Best LLM for JSON & Schema Output #1Best #2

Best LLM for Marketing Copy —#3Best

Best LLM for Massive Context #2 #1Best

Best LLM for Business Writing —#3Best

Best LLM for Frontend & UI —#7Best

Best LLM for Image Understanding #6 #2Best

Best LLM for OpenClaw #3 #1Best

Best LLM for Math & Reasoning —#3Best

Best LLM for Writing —#2Best

Best Cheap LLM for High Volume #2Best —

Best LLM for High-Volume Extraction #2Best —

Best LLM for Document Summarization —#5Best

Best Value LLM #4 #3Best

Best LLM for Document Parsing #5 #4Best

Best LLM for Agentic Coding #4 #2Best

Best LLM for RAG & Long Context —#4Best

Best LLM for Competition Math —#2Best

Best LLM for Vision & Documents —#3Best

Best LLM for Autonomous Agents #3 #1Best

Best LLM for Goose —#1Best

Best LLM for Charts & Diagrams #3Best —

Best LLM for Code Completion #1Best #2

Best LLM for OpenHands —#1Best

Best LLM for Computer & Browser Use #5 #1Best

Best LLM for Tool & Function Calling #5 #3Best

Best LLM for Summarization —#4Best

Best LLM for a General Assistant —#1Best

Cheapest Capable LLM —#4Best

Best LLM for Logic & Problem Solving —#2Best

Best LLM for Debugging & Code Review #7 #1Best

Best LLM for Structured Data Extraction #1Best #2

Best LLM for AI Agents #5 #1Best

Best LLM for Literary Translation —#2Best

Best LLM for Fast Summaries —#4Best