“Cited as performing better than Codex in using arbitrary new tools.”

“An AI model, described alongside Opus 4.5 as a 'step change' within Cloud Code.”

“Latest AI model by Anthropic, showed high vulnerability discovery rates on CyberGym, with capabilities increasing rapidly.”

“Latest Claude model, described as one of the best coders.”

“the big news that's come out of Anthropic this week. Signer 4.5. Can you tell us a little bit about what's new with this model”