Home / Compare / DeepSeek V4 Flash 0731 vs GPT-6 Luna

DeepSeek V4 Flash 0731 vs GPT-6 Luna

For a typical chat reply (2,000 tokens in, 400 out), GPT-6 Luna costs 2.4× as much as DeepSeek V4 Flash 0731: $0.40 against $0.17 per 1,000 requests at list price on 2026-09-28.

DeepSeek V4 Flash 0731GPT-6 Luna
Input, per 1M tokens$0.021$0.10
Output, per 1M tokens$0.32$0.50
Context window1.31M1.05M
Classification or routing (600 tokens in, 10 out), per 1,000$0.0158$0.065
Chat reply (2,000 in, 400 out), per 1,000$0.17$0.40
Retrieval-augmented answer (8,000 in, 500 out), per 1,000$0.328$1.05
Confidence signalyesno
Tool callingyesyes
BANKING77, correct of 400298320

Which one should carry your traffic?

If DeepSeek V4 Flash 0731 answers your requests as well as GPT-6 Luna, moving that traffic saves 57% on chat-shaped requests. Averages cannot tell you whether it does for your requests. DeepSeek V4 Flash 0731 exposes a confidence signal, so Gimbix can let it answer first and hand unsure cases to GPT-6 Luna.

DeepSeek V4 Flash 0731 profile · GPT-6 Luna profile · Measure it on your traffic