---
title: "Comment by Julian Neagu on \"Prefill vs. decode: Why the same model feels fast in one product and slow in another\" | Hashnode"
description: "A lot of people blame the model when the real issue is how the feature uses it. Seen this a few times with AI tools. The same model can feel totally different d"
url: "https://hashnode.com/posts/prefill-vs-decode-why-the-same-model-feels-fast-in-one-product-and-slow-in-another/6a5024d761270a6315fb4aaf/comment/6a52259c9e6668632488103a"
---

[Discussion](https://hashnode.com/posts/prefill-vs-decode-why-the-same-model-feels-fast-in-one-product-and-slow-in-another/6a5024d761270a6315fb4aaf)

Comment [Prefill vs. decode: Why the same model feels fast in one product and slow in another](https://hashnode.com/posts/prefill-vs-decode-why-the-same-model-feels-fast-in-one-product-and-slow-in-another/6a5024d761270a6315fb4aaf)

[Julian Neagu](https://hashnode.com/@julianneagulab)

[Jul 11](https://hashnode.com/posts/prefill-vs-decode-why-the-same-model-feels-fast-in-one-product-and-slow-in-another/6a5024d761270a6315fb4aaf/comment/6a52259c9e6668632488103a)

A lot of people blame the model when the real issue is how the feature uses it. Seen this a few times with AI tools. The same model can feel totally different depending on the flow.

[Abdulwaheed A A](https://hashnode.com/@habiz)

[Jul 11](https://hashnode.com/posts/prefill-vs-decode-why-the-same-model-feels-fast-in-one-product-and-slow-in-another/6a5024d761270a6315fb4aaf/comment/6a52259c9e6668632488103a#reply-6a526344dd362619795372cd)

If most people understand what's happening behind the hood and where where there flow sits, they should be able to optimise it better for a good experience and performance improvement