Home / Compare / GPT-4.1 Mini vs gpt-oss-120b

GPT-4.1 Mini vs gpt-oss-120b

For a typical chat reply (2,000 tokens in, 400 out), GPT-4.1 Mini costs 2.7× as much as gpt-oss-120b: $1.44 against $0.54 per 1,000 requests at list price on 2026-09-28.

GPT-4.1 Minigpt-oss-120b
Input, per 1M tokens$0.40$0.15
Output, per 1M tokens$1.60$0.60
Context window1.05M131K
Classification or routing (600 tokens in, 10 out), per 1,000$0.256$0.096
Chat reply (2,000 in, 400 out), per 1,000$1.44$0.54
Retrieval-augmented answer (8,000 in, 500 out), per 1,000$4.00$1.50
Confidence signalnoyes
Tool callingyesyes
BANKING77, correct of 400not measured329

Which one should carry your traffic?

If gpt-oss-120b answers your requests as well as GPT-4.1 Mini, moving that traffic saves 63% on chat-shaped requests. Averages cannot tell you whether it does for your requests. gpt-oss-120b exposes a confidence signal, so Gimbix can let it answer first and hand unsure cases to GPT-4.1 Mini.

GPT-4.1 Mini profile · gpt-oss-120b profile · Measure it on your traffic