Home / Compare / Gemini 3.1 Pro Preview vs GLM 5.3

Gemini 3.1 Pro Preview vs GLM 5.3

For a typical chat reply (2,000 tokens in, 400 out), Gemini 3.1 Pro Preview costs 3.7× as much as GLM 5.3: $8.80 against $2.41 per 1,000 requests at list price on 2026-09-28.

Gemini 3.1 Pro PreviewGLM 5.3
Input, per 1M tokens$2.00$0.325
Output, per 1M tokens$12.00$4.40
Context window1.05M1.31M
Classification or routing (600 tokens in, 10 out), per 1,000$1.32$0.239
Chat reply (2,000 in, 400 out), per 1,000$8.80$2.41
Retrieval-augmented answer (8,000 in, 500 out), per 1,000$22.00$4.80
Confidence signalnoyes
Tool callingyesyes

Which one should carry your traffic?

If GLM 5.3 answers your requests as well as Gemini 3.1 Pro Preview, moving that traffic saves 73% on chat-shaped requests. Averages cannot tell you whether it does for your requests. GLM 5.3 exposes a confidence signal, so Gimbix can let it answer first and hand unsure cases to Gemini 3.1 Pro Preview.

Gemini 3.1 Pro Preview profile · GLM 5.3 profile · Measure it on your traffic