Claude Sonnet 5

Post by squeegmeister » Tue, Jun 30, 2026, 7:51 PM UTC

mattas wrote: post #221

m3h wrote: post #202

Important to note: "Sonnet 5 is an upgrade to Sonnet 4.6, but it uses an updated tokenizer that changes how the model processes text to improve performance (this is similar to the tokenizer change we introduced with Claude Opus 4.7). The tradeoff is that the same input can map to more tokens: roughly 1.0–1.35× depending on the content type. The introductory pricing is set so that the transition to Sonnet 5 is roughly…

"We can raise prices in two ways: (1) raise the price per token and (2) increase the number of tokens we generate on your behalf. We promise not to do (2) maliciously. Promise."

Post by humanymous » Tue, Jun 30, 2026, 7:52 PM UTC

enraged_camel wrote: post #235

Jcampuzano2 wrote: post #216

I'm struggling to understand why I'd ever use this instead of just using a lower effort level for opus given on many of the benchmarks listed the cost per task rises above opus at anything higher than medium effort. Only thing I can think of is for when someone is out of opus credits. Of course there are API billing use cases but I'd probably still just use opus on low.

Speed is a huge reason. Sometimes you just need some simple tasks get done fast, and waiting 30-60 seconds for opus to even start thinking can really slow things down.

Post by pdimitar » Tue, Jun 30, 2026, 7:55 PM UTC

DontchaKnowit wrote: post #192

skerit wrote: post #109

Earlier quoted context omitted.

This is why Fable was so good. It followed instructions and it was in no way lazy.

People keep making comments about fable like this? You could only use it for what like a week? How is that at all enough time to evaluate? Opus 4.6 didnt suffer from this problems for a hot minute and then when newer models were released it got worse. I think they change a ton behind the scenes and allocate compute however they want, so the model you use today may behave much differently than how it behaved yesterday

Post by enraged_camel » Tue, Jun 30, 2026, 7:55 PM UTC

LUmBULtERA wrote: post #177

wolttam wrote: post #14

I didn't think they'd actually release a model that was worse than the open-weight frontier and at a higher price-point. Wow.

That's yet to be determined. I think a lot of open-weight models are benchmaxxed and their usefulness for many tasks are not represented by those.

Post by SirMaster » Tue, Jun 30, 2026, 7:57 PM UTC

Jcampuzano2 wrote: post #216

I'm struggling to understand why I'd ever use this instead of just using a lower effort level for opus given on many of the benchmarks listed the cost per task rises above opus at anything higher than medium effort. Only thing I can think of is for when someone is out of opus credits. Of course there are API billing use cases but I'd probably still just use opus on low.