Opus 5 has made me question my sanity on a daily basis, especially as all my coworkers started lobbing Opus 5 slop grenades everywhere. It had the worst and most infuriating writing style I've ever seen.

I hope Opus 5.5 is better, if for no other reason than all the Claude slop I have to read will be at least more tolerable.

One funny side effect of all of this: realizing that coworkers that use AI for almost all the text they generate at work have their writing style change every time a new model ships.

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nonethewiser 5 hours ago | parent | next [-]

I really wonder how it converged on its style. It's pretty unique and terrible. It's not like it's just mimicking something or it was purposefully design to be that way. I mean the reason may be diffuse and uninteresting... just the result of a lot of factors and lack of control over the writing style probably.

But oddly enough its still great at coding. Just like a lot of people it either interfaces well with people or machines but not both.

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penagwin 3 hours ago | parent | next [-]

I assume it’s largely a side effect from the final RL in post training?

That’s the step that causes the most significant gains in agentic performance.

But the RL doesn’t care about anything except maximizing the score, so if you only score based on coding benchmarks, anything can happen to the writing style (as long as it doesn’t hurt the coding performance).

That’s why it often gets worse on models that simply had more RL post training from the same base.

	▲	tancop 19 minutes ago \| parent \| next [-]
		Does Xiaomis approach help with this? They do all the post training steps at the same time instead of one by one, switch topics after a couple prompts so writing style is mixed with coding and tool use. Apparently it helps generalize skills between areas, which makes sense when you compare it to how humans learn but I don't know if it's the same for LLMs.
	▲	nonethewiser 3 hours ago \| parent \| prev [-]
		Reinforcement learning for specific use-cases like coding that degrade it's writing style... makes sense. Maybe it stands to reason later version of Opus were improved more by this sort of fine-tuning. Feels consistent with the observation of diminishing returns and worsening writing style. Wonder what changed (supposedly) in 5.5.

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Trasmatta 5 hours ago | parent | prev [-]

It truly was bizarre. I've used every major model since 2022, and not a single one had a writing style as bad as Opus 5

	▲	jaapz 3 hours ago \| parent [-]
		Fable 5 was pretty bad too, but they fixed it with 5.1. Now with Opus 5.5 it seems they fixed it as well

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LtdJorge 5 hours ago | parent | prev | next [-]

Yes, it made me want to vomit. If the new Fable only changed the writing style to just sound like a human, same performance for everything else, I'd be pretty happy.

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rfgplk 3 hours ago | parent | prev | next [-]

Opus is only usable if you have a post-turn formatter that strips all comments from the generated source. I'm not even kidding it's that bad.

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Aperocky 5 hours ago | parent | prev | next [-]

It's not X, it's Y, not A, not B, not C, and he haven't even woken up yet! Here's the catch, the detail is in the devils and the twist is that it's designed!

	▲	FireBeyond 4 hours ago \| parent \| next [-]
		You're right to call this out, and what's more, it's not even solving the original problem. I overlooked this in pursuit of the load-bearing seams and finding the wedge needed to uptick engagement.
	▲	legobmw99 2 hours ago \| parent \| prev [-]
		Here's the X that Ys the Z:

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epolanski 6 minutes ago | parent | prev [-]

> especially as all my coworkers started lobbing Opus 5 slop grenades everywhere

People that produce slop have to be fired asap, they're just human relays anyway.