Saturday, October 04, 2025

Anthropic releases Claude Sonnet 4.5 with largely improved coding capabilities

Good news! Impressive! I bet the next release of a better competitor model is just around the corner! 😊 This blog post may decay faster than radioactive decay! 😊

Note on the side: I just turned of several AI extensions of Visual Studio Code, because they got on my nerves! Maybe I will give it a try again! 😊

"Anthropic announced Claude Sonnet 4.5, highlighting a major leap in autonomous “computer use” and coding capabilities. In internal tests, the model ran unattended for 30 hours to build a Slack/Teams-like chat app, generating ~11,000 lines of code, up from Opus 4’s seven-hour autonomy earlier this year. Anthropic claims Sonnet 4.5 is its best model yet for real-world agents, coding, and general computer operation, with strong performance in cybersecurity, financial services, and research. ..."

"... Claude Sonnet 4.5 makes this possible. We're releasing it along with a set of major upgrades to our products. In Claude Code, we've added checkpoints—one of our most requested features—that save your progress and allow you to roll back instantly to a previous state. We've refreshed the terminal interface and shipped a native VS Code extension. We've added a new context editing feature and memory tool to the Claude API that lets agents run even longer and handle even greater complexity. In the Claude apps, we've brought code execution and file creation (spreadsheets, slides, and documents) directly into the conversation. And we've made the Claude for Chrome extension available to Max users who joined the waitlist last month. ..."

Last Week in AI #323 - Sonnet 4.5, Sora 2, Vibes, SB 53


Introducing Claude Sonnet 4.5 (original press release)





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