---
title: "Where DeepSeek V4.1 Pro could land"
date: 2026-09-16
canonical: https://solmaz.io/x/2100105334451032069/
x_url: https://x.com/onusoz/status/2100105334451032069
license: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/)
---

A crazy rest of September/October is ahead of us

If DeepSeek V4.1 Flash sits between Terra and Sol…

Then where will V4.1 Pro sit?

If DeepSeek executes with the same rate and releases a 3-6x bigger Pro model using the same architecture, what are we going to get?

Most likely, a model that sits between Sol and Astra/Fable and potentially exceeds them

With the same KV cache characteristics, making it potentially an order of magniture cheaper than those models

(Note that Kimi K3 was already close to that in terms of performance, but not in terms of price)

Now, when would be the ideal time to drop such a model?

Alongside updated V4.1 Flash weights that potentially surpass Sol/Opus?

Just before the Anthropic IPO of course!

Get your popcorn, because things are about to get heated

This might be the month where the narrative on open vs closed source AI flips, not only for local models but for datacenters as well

*Part 1/2 of a thread; root: https://solmaz.io/x/2100105334451032069/*
*Quotes a post by @onusoz (https://x.com/onusoz/status/2099821884259098777); its text is omitted here because it is not covered by this site's license.*