Anthropic’s new AI codes for 30+ hours

PLUS: Microsoft’s new autonomous analyst and Tencent's new open source Image model

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Gen AI Art
October 01, 2025 • Estimated Reading Time: 8 minutes

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Anthropic just released Claude Sonnet 4.5, a new model boasting the ability to code autonomously for over 30 hours. The release also includes new tools designed to build powerful AI agents.

With its ability to handle long-term tasks and new agent-building tools, the release pushes AI from a simple coding assistant to a full-fledged project collaborator. How will this level of AI autonomy reshape the role of human developers and the pace of software creation?

Today in AI:

  • Anthropic's new AI codes for 30+ hours

  • Microsoft's new autonomous analyst

  • Tencent's new open-source image model

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What's new? Anthropic just released Claude Sonnet 4.5, a new model it calls the "best coding model in the world," which can reportedly code autonomously for over 30 hours and introduces new agent-building tools.

What matters?

  • Sonnet 4.5 sets a new standard for AI endurance, coding autonomously for over 30 consecutive hours in tests to deliver 11,000 lines of code.

  • Anthropic also shipped new developer tools, including Claude Code checkpoints to save and rewind progress, a native VS Code extension, and an Agent SDK for building custom agents.

  • The model can now generate files directly, like spreadsheets and slides, and a research preview called Imagine with Claude showcases its ability to build software in real-time.

Why it matters?

This release shifts the focus from simple code completion to long-term, autonomous development tasks. Anthropic is directly challenging competitors by providing tools that allow developers to delegate entire projects, not just snippets, to AI.

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What's new? Microsoft upgraded its 365 Copilot with a new “Agent Mode”, transforming it from a simple assistant into an autonomous project manager. This allows the AI to handle complex, multi-step tasks without step-by-step guidance.

What matters?

  • Instead of just asking for help, you can now delegate entire projects to Copilot.

  • You can tell it to run a full analysis on sales data in Excel, and it will autonomously create new sheets, build charts, and check its own work.

  • This new power is supported by models like Anthropic's Claude Sonnet 4.5, which is now available for developers in Microsoft's Copilot Studio.

Why it matters?

This marks a significant shift from AI as a tool to AI as a digital teammate for complex analytical work. The integration of powerful agents directly into everyday office software is accelerating the path to widespread autonomous workflows.

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What's new? Tencent has released HunyuanImage 3.0, a new open-source image model that excels at complex prompts and in-image text generation.

What matters?

  • he model packs 80 billion parameters and was trained on a diverse dataset of text, images, and video.

  • It understands exceptionally long prompts, allowing users to provide thousands of words of context for more coherent outputs.

  • A key feature is its ability to accurately render text within an image, a common challenge for many generative models.

Why it matters?

The availability of such a capable open-source model gives developers and creators access to top-tier image generation without being tied to a proprietary platform. This move accelerates innovation in the space and pushes the boundaries of what's possible with AI-driven creative tools.

Everything else in AI

DeepSeek cut AI costs with a new model featuring a more efficient method for reading long documents.

OpenAI prepares a standalone social platform for Sora 2, designed to mimic TikTok with a feed of exclusively AI-generated videos.

Meta revealed Vibes, an entirely AI-generated video feed that will live inside the Meta AI app, signaling a major push into AI social content.

Brave updated its “Ask Brave” feature to provide detailed AI answers, with a privacy-first approach that deletes all conversations after 24 hours.

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