Comparing 2 models

DeepSeek V4 Flash 0423 vs GPT-5.6 Luna

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

metric

Model 1DeepSeek V4 Flash 0423

Model 2GPT-5.6 Luna

Best for

Grounded RAG (#2)

Code Completion (#1)

Provider

deepseek

openai

Context

1.0M

1.1MBest

Input / 1M

$0.089Best

$0.20

Output / 1M

$0.18Best

$1.20

Tool use

yesBest

Vision

—

yesBest

Reasoning

yesBest

Open-weight

yesBest

—

Released

Apr 23, 2026

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 Value LLM #3Best #4

Best LLM for Coding #7Best —

Best LLM for Agentic Coding —#4Best

Best LLM for OpenClaw —#4Best

Best LLM for Code Completion —#1Best

Best LLM for RAG & Long Context #6Best —

Best LLM for AI Agents —#5Best

Best LLM for Grounded RAG #2Best —

Best LLM for Image Understanding —#7Best

Best LLM for Vision & Documents #5Best —

Best LLM for Structured Data Extraction —#1Best

Best Local LLM for Coding #2Best —

Best LLM for JSON & Schema Output —#1Best

Best LLM for High-Volume Extraction —#3Best

Best LLM for Debugging & Code Review —#5Best

Best LLM for Autonomous Agents —#5Best

Best LLM for Computer & Browser Use —#5Best

Best LLM for Document Parsing —#4Best

Best LLM for Hermes Agent #3Best #4

Best LLM for Tool & Function Calling —#5Best

Best LLM for OCR & Documents #3Best —

Best LLM for OpenHands —#4Best

Best LLM for Massive Context —#2Best

Cheapest Capable LLM #3Best —

Best LLM for Literary Translation #3Best —