Home / Compare / Mistral Large 3 2512 vs GPT-6 Luna

Mistral Large 3 2512 vs GPT-6 Luna

For a typical chat reply (2,000 tokens in, 400 out), Mistral Large 3 2512 costs 4.0× as much as GPT-6 Luna: $1.60 against $0.40 per 1,000 requests at list price on 2026-09-28.

Mistral Large 3 2512GPT-6 Luna
Input, per 1M tokens$0.50$0.10
Output, per 1M tokens$1.50$0.50
Context window262K1.05M
Classification or routing (600 tokens in, 10 out), per 1,000$0.315$0.065
Chat reply (2,000 in, 400 out), per 1,000$1.60$0.40
Retrieval-augmented answer (8,000 in, 500 out), per 1,000$4.75$1.05
Confidence signalnono
Tool callingyesyes
BANKING77, correct of 400not measured320

Which one should carry your traffic?

If GPT-6 Luna answers your requests as well as Mistral Large 3 2512, moving that traffic saves 75% on chat-shaped requests. Averages cannot tell you whether it does for your requests. GPT-6 Luna does not expose a confidence signal through OpenRouter, so Gimbix would test it as a full replacement rather than a first answer.

Mistral Large 3 2512 profile · GPT-6 Luna profile · Measure it on your traffic