Home / Compare / gpt-oss-120b vs Qwen3.8 Flash

gpt-oss-120b vs Qwen3.8 Flash

For a typical chat reply (2,000 tokens in, 400 out), gpt-oss-120b costs 1.1× as much as Qwen3.8 Flash: $0.54 against $0.488 per 1,000 requests at list price on 2026-09-28.

gpt-oss-120bQwen3.8 Flash
Input, per 1M tokens$0.15$0.15
Output, per 1M tokens$0.60$0.47
Context window131K1M
Classification or routing (600 tokens in, 10 out), per 1,000$0.096$0.0947
Chat reply (2,000 in, 400 out), per 1,000$0.54$0.488
Retrieval-augmented answer (8,000 in, 500 out), per 1,000$1.50$1.44
Confidence signalyesyes
Tool callingyesyes
BANKING77, correct of 400329316

Which one should carry your traffic?

If Qwen3.8 Flash answers your requests as well as gpt-oss-120b, moving that traffic saves 10% on chat-shaped requests. Averages cannot tell you whether it does for your requests. Qwen3.8 Flash exposes a confidence signal, so Gimbix can let it answer first and hand unsure cases to gpt-oss-120b.

gpt-oss-120b profile · Qwen3.8 Flash profile · Measure it on your traffic