Home / Compare / DeepSeek V4 Pro 0423 vs GPT-5.4 Mini

DeepSeek V4 Pro 0423 vs GPT-5.4 Mini

For a typical chat reply (2,000 tokens in, 400 out), GPT-5.4 Mini costs 1.2× as much as DeepSeek V4 Pro 0423: $3.30 against $2.67 per 1,000 requests at list price on 2026-09-28.

DeepSeek V4 Pro 0423GPT-5.4 Mini
Input, per 1M tokens$0.955$0.75
Output, per 1M tokens$1.91$4.50
Context window1.05M400K
Classification or routing (600 tokens in, 10 out), per 1,000$0.592$0.495
Chat reply (2,000 in, 400 out), per 1,000$2.67$3.30
Retrieval-augmented answer (8,000 in, 500 out), per 1,000$8.60$8.25
Confidence signalyesno
Tool callingyesyes

Which one should carry your traffic?

If DeepSeek V4 Pro 0423 answers your requests as well as GPT-5.4 Mini, moving that traffic saves 19% on chat-shaped requests. Averages cannot tell you whether it does for your requests. DeepSeek V4 Pro 0423 exposes a confidence signal, so Gimbix can let it answer first and hand unsure cases to GPT-5.4 Mini.

DeepSeek V4 Pro 0423 profile · GPT-5.4 Mini profile · Measure it on your traffic