Home / Compare / GPT-5.4 vs Qwen3.8 27B

GPT-5.4 vs Qwen3.8 27B

For a typical chat reply (2,000 tokens in, 400 out), GPT-5.4 costs 5.4× as much as Qwen3.8 27B: $11.00 against $2.04 per 1,000 requests at list price on 2026-09-28.

GPT-5.4Qwen3.8 27B
Input, per 1M tokens$2.50$0.42
Output, per 1M tokens$15.00$3.00
Context window1.05M1M
Classification or routing (600 tokens in, 10 out), per 1,000$1.65$0.282
Chat reply (2,000 in, 400 out), per 1,000$11.00$2.04
Retrieval-augmented answer (8,000 in, 500 out), per 1,000$27.50$4.86
Confidence signalnoyes
Tool callingyesyes
BANKING77, correct of 400not measured264

Which one should carry your traffic?

If Qwen3.8 27B answers your requests as well as GPT-5.4, moving that traffic saves 81% on chat-shaped requests. Averages cannot tell you whether it does for your requests. Qwen3.8 27B exposes a confidence signal, so Gimbix can let it answer first and hand unsure cases to GPT-5.4.

GPT-5.4 profile · Qwen3.8 27B profile · Measure it on your traffic