ForecastJuliusBrusseedeveloper tool

Caveman 4.1 has not been announced. Based on how often JuliusBrussee ships new versions, our forecast is that it arrives around October 30, 2026, probably between October 28, 2026 and November 2, 2026.

The forecast

Most likely	October 30, 2026
Window	October 28, 2026 to November 2, 2026
Chance it arrives in that window	About 60%
Follows	Caveman 4.0 (out October 13, 2026)
Based on	8 earlier gaps between minor releases on GitHub

How we got this

JuliusBrussee is the maker of Caveman 4.0. We look at the gaps between its earlier versions (Caveman 3.0, 2026-09-30; Caveman 3.1, 2026-10-04; Caveman 3.2, 2026-10-08; Caveman 4.0, 2026-10-13) and project the next one. It is a guess from a pattern, not news: the maker has not said Caveman 4.1 exists. This page turns into the launch page, with price and facts, as soon as the model shows up on OpenRouter, Hugging Face or GitHub.

Available now from JuliusBrussee

Predicted automatically by Modelcast. Not affiliated with JuliusBrussee.