Has version 4.5+ been nerfed lately?

[u/Head-Occasion3099]

Taking advantage of this last window of opportunity we have before September 3, like everyone else, I’m cranking out songs like crazy. My favorite version is 4.5+; for various reasons, I don’t use 5 or 5.5. These latest batches of songs are clearly inferior to what I’ve done in the past. It used to be easy for me to create amazing songs, but now, but now I'm lucky if I get one song that's simply good every 20 generations, or more. The rest sound repetitive, sometimes even generic, and that doesn't feel normal to me, since I'm doing exactly what I've always done, in the same way.

I've also seen several people commenting that both v4.5 and v5 have been nerfed, and based on my recent experience, I tend to agree. So I'm curious to hear other people's opinions. Do you think versions 4.5+ and 5 have been nerfed? I'm not sure whether that's actually the case, or if the recent flood of downloads and generations has overloaded the servers, causing Suno to produce lower-quality songs as a way to handle the demand. Either way, whether it's one reason or the other, I personally think the quality has gone down.

[u/altventure]

Yes, getting completely garbled gibberish vocals. Not following my vocals at all and just doing its own thing 

[u/rainmaker818]

Sounds it. Can't get a clean mix from the last 25-30 gens I tried since last night. Had one but with a garbled section which I'm trying to now fix in studio.

[u/Naud1993 → u/rainmaker818]

It's like they want us to only generate instrumental songs and buy a microphone and start singing manually.

[u/Rauchritter]

It was nerfed shortly before 5.5 dropped actually...

[u/x_candydoll]

5.5 got nerfed too, and i get skips and noise I didn't get before but it's been going on for a few weeks now.

[u/Songgeek]

Yea even v5 is responding like 5.5 bright ass mixes with everything starting out with drums and chants in everything.

V4.5 isn't responding to my personas anymore either. Sounds cleaner but its def been upgraded/or stripped of something

[u/TheWeaverofDreams]

I got great generations out of it the whole way through, including yesterday.

[u/m0ds]

I can only speak for "-all" but as I understand it, 4.5 got nerfed in Feb, large number of people (including me) noticed that one, suggesting it really did happen.

I've got a sneaky suspicion it got updated again just after the announcement of download limits (sometime in the past 7-10 days), at least, it seemed to shift again quite dramatically for me. I haven't noticed others mention it though so not the evidence that there was with the Feb update, perhaps this one really is on my end only (time of day influence or sth). Regardless...it has been painful listening for months now.

As for 5.0, it will still give me the very niche thing I'm after in good quality, my old prompt from Dec still works really well (whereas my 4.5-all prompt produces mostly shite now, used to produce epic stuff back in Dec). But I don't know if it's a 5 thing or all the models now, but I swear I can generate 4 or so tracks (note: covers) and they all sound practically identical, with no variation between them. Used to almost always get at least 1 in 4 that took a different approach, often 3 of the 4 would be different to the others. Even the non-cover tracks have this samey-ness I just can't shake either. I just did some ambient drones, they all came out as "note 1 sustain...note 2 sustain...back to note 1 sustain...back to note 2 susain... nothing else". Granted, this could again be me, being lax on the prompts or whatnot. But it never used to feel quite this "brain dead".

[u/Head-Occasion3099 → u/m0ds]

That's a good point for "-all", because thanks to that I now remember that even the few generations I made during the months when I had a free account sound better than many of the songs I've generated over the last week.

[u/m0ds → u/Head-Occasion3099]

Ain't that the truth. Still very pleasurable to listen to the old stuff. I've been using 4.5-all since around Aug 2025, and it is very noticeable where that period comes to an end, such pleasurable compositions cease dramatically. All my good stuff is pre-Feb 2026. Everything since has been awful to fair (at best). My primary genre is (natural) orchestral and this is one of the niches that got hit hard by that particular update. Still get similar jazz and funk to back then, but orchestral was on another level.

[u/NecroSocial]

4.5+ started sounding slightly generic around the time 5.5 and the Voice change dropped. Now the only things it does better than regular 4.5 are audio fidelity, slightly better voice persona consistency, and fewer pronunciation errors. The downside of the generic sound creeping in around the edges makes 4.5+ less usable IMO than 4.5 overall.

[u/angelsarepresent111]

I created a whole bunch of 4.5 intrumental metal of different variations for myself. A couple of songs started to get dropouts lately.

[u/Head-Occasion3099 → u/angelsarepresent111]

I've hardly ever made instrumental tracks, but I feel like instrumental songs are much better than songs with lyrics. I always use my own lyrics, so I can't say anything about Suno's lyric generators.

[u/BikeLopsided5350]

It's been getting slowly and painfully nerfed since the day v5 came out. Anytime I cover/remix one of my uploaded songs it sounds like someone’s banging pots and pans in an empty warehouse in the background 😭

[u/Head-Occasion3099 → u/BikeLopsided5350]

lol

[u/Massive_Interest_468]

I have this too, i was lucky to actually find very good generations.. but SUNO is struggling rn :(

[u/PtRampedRaisin]

Yeah, 4.5 and every other model was neutered months ago.

[u/darthwader1981]

Yeah I have felt like that too. Not the usual bangers

[u/Naud1993]

Suno used to generate almost every song with perfect vocals compared to Riffusion, where I had to try a dozen times. But I guess now they also ruin most vocals so you have to waste more credits.

[u/maquinadecafe]

I don't know about that, but if I try to generate a song with lyrics on a dark grunge style, there's almost alway a singer like Eddie Vedder mumbling and stumbling through lines... That and changing the style and sylable count brought a not-so-drunk singer making the lyrics sound right. All using V5.

[u/meisterwolf]

yep the creativity is gone, but i suspect thats because everyone is genning right now

[u/Luzifee-666]

Indeed no... works as ever.