Claude Sonnet 4.5 - The best coding model in the world
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It's the strongest model for building complex agents. It's the best model at using computers. And it shows substantial gains on tests of reasoning and math.
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Hunter
📌
Hey Hunters, Claude Sonnet 4.5 is here
Anthropic’s latest release is being called the best coding model in the world—stronger at building complex agents, better at using computers, and showing big gains in reasoning and math.
Here’s what’s new:
✅ Claude Code upgrades → a fresh terminal UI + a new VS Code extension to bring Claude into your IDE
✅ Checkpoints → run large tasks with confidence and roll back instantly if needed
✅ Code-powered insights → Claude can now analyze data, create files, and visualize outputs in your formats
✅ Chrome extension → now available to everyone on the waitlist
✅ API updates → context editing to clear stale context + a memory tool for long-running tasks
Claude Sonnet 4.5 is live today on the Claude Developer Platform, plus Amazon Bedrock and Google Cloud Vertex AI—with the same pricing as Sonnet 4. 🚀
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Love that the model is now blending coding , reasoning and visualization . This makes it feel like true collaborator in the dev loop. Congrats on the launch @saaswarrior@kevin_garcia1@kyleturman@scott_white_sf
Replies
Hey Hunters, Claude Sonnet 4.5 is here
Anthropic’s latest release is being called the best coding model in the world—stronger at building complex agents, better at using computers, and showing big gains in reasoning and math.
Here’s what’s new:
✅ Claude Code upgrades → a fresh terminal UI + a new VS Code extension to bring Claude into your IDE
✅ Checkpoints → run large tasks with confidence and roll back instantly if needed
✅ Code-powered insights → Claude can now analyze data, create files, and visualize outputs in your formats
✅ Chrome extension → now available to everyone on the waitlist
✅ API updates → context editing to clear stale context + a memory tool for long-running tasks
Claude Sonnet 4.5 is live today on the Claude Developer Platform, plus Amazon Bedrock and Google Cloud Vertex AI—with the same pricing as Sonnet 4. 🚀
Love that the model is now blending coding , reasoning and visualization . This makes it feel like true collaborator in the dev loop. Congrats on the launch @saaswarrior @kevin_garcia1 @kyleturman @scott_white_sf
it looks amazing. When does it come to CLI?
Mahogany Chat
@savaskalkan It looks like it's already been added to Claude Code
@vaporwave_cowboy I use CLI mostl. But yes I saw it now in Claude Code.
I have been using Soneet 4.5 in Claude Code and Cursor since yesterday, and it is amazing!!
Mahogany Chat
Been using this the last couple days via Cursor with great results! So much so that I made it the default model for my current launch.
Hatable
We have been using sonnet 4.5 for sometime now, it's totally awesome and beats other models easily.
Great day for AI coding platforms. Powering next gen builders.
NerdyNotes
Available in cli?