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Claude Sonnet 5

anthropic.com

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Re: Claude Sonnet 5

#31

Post by microtonal »

Claude Sonnet 5 is built to be the most agentic Sonnet model yet. It can make plans, use tools like browsers and terminals, and run autonomously at a level that, just a few months ago, required larger and more expensive models.

I have been using Sonnet 4.6 more than Opus, because I'm mostly doing agent-assisted development and not fully agent-driven development. This announcement does not make me positive, I have found that the more models are optimized for fully agentic development, the worse they get at assisted development and often start doing too much despite very strict/specific instructions.

I have been moving more and more to K2.7 Code and GLM-5.2 the last few weeks. They are often good enough for assistance, very fast, and cheap.

Re: Claude Sonnet 5

#32

Post by Philpax »

satvikpendem wrote: post #26

> Evaluations also show that it has a much lower ability to perform cybersecurity tasks than our current Opus models. Why would they brag about something like this? It's like they know people want to use models to perform cybersecurity tasks yet knowingly deny them the ability. And Opus 4.8 is still cheaper for a higher pass rate (much less open weight models like GLM 5.2) so not sure why I'd use Sonnet except on the…

To avoid Lutnick getting on their case again.

Re: Claude Sonnet 5

#33

Post by doctoboggan »

satvikpendem wrote: post #26

> Evaluations also show that it has a much lower ability to perform cybersecurity tasks than our current Opus models. Why would they brag about something like this? It's like they know people want to use models to perform cybersecurity tasks yet knowingly deny them the ability. And Opus 4.8 is still cheaper for a higher pass rate (much less open weight models like GLM 5.2) so not sure why I'd use Sonnet except on the…

You have to pay more for that, and/or go through some USG vetting process.

Re: Claude Sonnet 5

#35

Post by mohamedkoubaa »

microtonal wrote: post #31

Claude Sonnet 5 is built to be the most agentic Sonnet model yet. It can make plans, use tools like browsers and terminals, and run autonomously at a level that, just a few months ago, required larger and more expensive models. I have been using Sonnet 4.6 more than Opus, because I'm mostly doing agent-assisted development and not fully agent-driven development. This announcement does not make me positive, I have fou…

I've been moving more to Composer 2.5 for the same reason. KISS principle.

Re: Claude Sonnet 5

#36

Post by SoKamil »

I believe that’s gonna be meta for agentic coding this year for enterprises. Cost optimized models approaching SOTA capabilities on software engineering but without cybersec training.

Re: Claude Sonnet 5

#37

Post by nsingh2 »

alvis wrote: post #11

What I starting to hate is that each model's effort level can mean completely different power. Today sonnet 5's med level effort is equivalent to sonnet 4.6 low level effort :/

That seems to only be true for the "Agentic Search" benchmark. That benchmark in particular is a bit weird, because Sonnet 4.6 effort levels had a relatively small effect, so Sonnet 5 med is basically comparable to all effort levels of Sonnet 4.6.

Re: Claude Sonnet 5

#38

Post by johnfahey »

Judging from those cost-performance graphs, Sonnet doesn't make sense to run at anything higher than a medium reasoning level, since Opus 4.8 low reasoning outclasses it for the price.

This line as a selling point is also pretty funny:

> Evaluations also show that it has a much lower ability to perform cybersecurity tasks than our current Opus models.

Re: Claude Sonnet 5

#40

Post by alvis »

Ironically, the key message of today's release is that Sonnet 5 is far less capable than Opus 4.8 and Mythos 5. It's a funny development is the past few weeks
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