Anthropic charges extra for using Claude with external tools. Google launches Gemma 4, its most powerful open model with a free license. Claude Code’s source code leaks and reveals 44 hidden features. OpenAI buys the TBPN podcast as an influence operation. And Anthropic connects Claude to the entire Microsoft 365 ecosystem, free for everyone.
I’ve filtered out the noise for you
I round up the week’s most important AI news so you don’t get lost in the internet noise. Here’s what matters most.
1: Anthropic Closes Claude’s “All-You-Can-Eat” Plan
Starting April 4, Claude Pro and Max subscribers can no longer use their monthly plan to power external tools like OpenClaw, the autonomous agent framework. If they want to keep using it, they pay per use separately; the policy will extend to all external tools in the coming weeks.
Why it matters: An autonomous agent running a full day with complex logic and many connections could consume the equivalent of $1,000 to $5,000 in API costs, and Anthropic was absorbing that difference quietly to get everyone hooked. The flat subscription model and the age of agents are incompatible, and this week it became official.
2: Google Launches Gemma 4, the Most Capable Open Model Yet
Google DeepMind launched Gemma 4, built on the same research as Gemini 3, with contexts of up to 256K tokens (26B), native processing of text, vision, and audio, and support for over 140 languages. It comes in four sizes, from models that run on a phone to a 31B model that ranks third in the Arena AI open model leaderboard.
Why it matters: The switch to an Apache 2.0 license is the most significant signal from the launch: it removes the restrictions that blocked enterprise deployments in previous versions. Companies can now run these models within their own infrastructure, without giving up data or paying royalties.
3: Claude Code’s Source Was Leaked, Revealing Future Releases
A packaging error exposed 512,000 lines of Claude Code’s internal source code; the repository was forked more than 41,500 times before it was taken down. Analysis revealed 44 hidden features: an autonomous mode (KAIROS), cross-session memory consolidation (autoDream), a remote planning mode of up to 30 minutes (ULTRAPLAN), and codenames for models not yet released.
Why it matters: What was being sold as a coding assistant is actually a complete operating system architecture for agents. The gap between the Claude that exists today and the one Anthropic has ready to go public is substantial, and now their competitors know it too.
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4: OpenAI Buys TBPN, One of the Most Viral Podcasts Right Now
OpenAI acquired TBPN, the daily tech show hosted by John Coogan and Jordi Hays, which has featured Mark Zuckerberg, Satya Nadella, and Sam Altman himself. The terms were not disclosed, although the deal is estimated to be in the hundreds of millions of dollars.
Why it matters: TBPN is not a media buy; it is a distribution play targeting the only audience that matters for OpenAI ahead of its IPO: founders, investors, and executives who decide which AI to adopt in their companies. The show will report directly to OpenAI’s head of policy affairs, not the product team.
5: Claude Enters Your Microsoft 365. This Changes the Game Against Copilot
Anthropic opened its Microsoft 365 connectors (Outlook, OneDrive, SharePoint, and Teams) to all Claude plans, including the free tier. Claude accesses your emails, documents, and conversations with delegated, read-only permissions, with no need to upload anything manually.
Why it matters: Microsoft Copilot costs $30 per user per month and only works within Microsoft apps. Claude does the same thing (with better reasoning) for $0, and paradoxically, Microsoft is already integrating Anthropic’s models inside its own Copilot.
Bonus: Content of the Week
Gentleman Programming is putting out excellent content breaking down the latest moves in AI. Their approach is a bit more technical, and I highly recommend it.
