Compare AI models: DeepSeek V4 Flash vs GPT-6 Luna

DeepSeek V4 FlashDeepSeek
GPT-6 LunaOpenAIHollow points use fallbacks · hover for details

ReasoningCodingCost efficiencyContext windowMultimodalTool use

Normalized model capability scores
Model	Reasoning	Coding	Cost efficiency	Context window	Multimodal	Tool use
DeepSeek V4 Flash	26/100	73/100	75/100	81/100	0/100	0/100
GPT-6 Luna	50/100 — Reasoning supported; no comparable benchmark	45/100	71/100	98/100	50/100	50/100 — Tool calling supported; no comparable benchmark

Overview

Author

DeepSeek

OpenAI

Context length

1.1M

Reasoning

True

Input modalities

Text

Text, Image, Pdf

Output modalities

Text

Providers

DeepSeek

OpenAI

Pricing

Input

$0.14/ 1M

$0.10/ 1M

Output

$0.28/ 1M

$0.50/ 1M

Cached input

$0.0028/ 1M

$0.01/ 1M

MomentumLast 2 mo

Unique users

1.7M

766K

Completed sessions

25,275,722

6,196,101

Token share

6.82%

0.34%

Tokens

81T-71%

4.1T+100%

SEP 3OCT 28

RetentionWeek 1

Returning users

63.1%139K user-weeks

62.4%10K user-weeks

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