2025
Anthropic says Claude Sonnet 4.5 can run for up to thirty hours straight without human intervention.
“Anthropic says this particular model, Sonnet 4.5, can run for up to thirty hours straight without any human intervention”
Topic
Claude Sonnet 4.5
9 facts from 2 episodes, in date order. These are what speakers said on the shows, each linked to the moment it was said. They aren't independently verified.
2025
Anthropic asked Claude Sonnet 4.5 to recreate the Claude.ai chat application from scratch, and it worked overnight to do so.
“we asked Claude to recreate Claude.ai, like our our consumer chat application from scratch. And Sonnet 4.5 just like worked overnight”
2025
The Claude.ai rebuild took about twelve hours, and Anthropic has seen up to thirty hours of continuous development work before the model struggles.
“That specific one was like a twelve hour thing. We've seen like up to thirty hours of continuous dev work until the model would start to start to struggle.”
2025
Hershey says Anthropic has made meaningful progress on sycophancy and that Sonnet 4.5 is more willing to push back on users.
“I do think we have made meaningful progress and this model seems to be a little bit more willing to, uh, push back”
2025
Hershey says Sonnet 4.5 works by handling one small piece at a time, which he finds more like how a coworker works than earlier models.
“But it just like bites off one little chunk at a time, and that feels a lot more like what I want a coworker to work like”
2025
Cognition published a post about how much its Devin product improved with Sonnet 4.5.
“They put out a post yesterday about how much their their product devin improved with the model and some of the work they did to to make that product better.”
2025
Hershey says he is confident Claude Sonnet 4.5 is the best coding model in the world, citing benchmarks.
“I'm pretty confident that this is the best coding model in the world. We have a lot of benchmarks and other things to prove that out.”
2025
Hershey says he has seen Sonnet 4.5 deploy a complex application to AWS autonomously and run a security audit on it.
“I've seen it be able to deploy a complex application to AWS, like fully autonomously, and do like a security audit on it.”
Undated
Sid Pardeshi says Claude Sonnet 4.5 had a tendency to give up and fake solutions, which Anthropic fixed in Claude Opus 4.5 after Blitzy gave feedback.
“but we reach out to Anthropic, and Anthropic actually fixed them. So 4.5 Sonnet had this issue, but 4.5 Opus does not.”
Episodes