Head to head

GPT-6 Luna vs Gemini 3.1 Flash Lite Preview

Price, context, inputs and filters. No benchmarks theatre.

Swap sides

GPT-6 Luna costs 2.6× less per message.

Both hold the same amount of context.

Fact

GPT-6 LunaOpenAI

MainstreamChat with GPT-6 Luna

Gemini 3.1 Flash Lite PreviewGoogle

MainstreamChat with Gemini 3.1 Flash Lite Preview

Made by

OpenAI

Google

Content tier

Mainstream

Intelligence

Quick

Estimated price per message

~0.31 credits≈ 322 messages for 1 €

~0.82 credits≈ 121 messages for 1 €

Context window

1.1M tokens≈ 1,615 pages of text in one go

1M tokens≈ 1,613 pages of text in one go

Reads

Text, Images

Text, Images, Video, Audio

Writes

Text

Tool use

Yes - search, memory, code and more

Served via

OpenRouter, Unbottled AI

Status

Current

Legacy

A typical message: 16K tokens in, 1.5K out. Short replies cost less. Models served via OpenRouter bill the real provider cost plus our markup, so actual charges vary. 1 credit = 0.01 €.

GPT-6 Luna details Gemini 3.1 Flash Lite Preview details