Large language model providers are rapidly building in agentic AI tools to handle tasks autonomously over time. Anthropic released Claude Sonnet 4.5, OpenAI is open sourcing Agentic Commerce Protocol to give ChatGPT a commerce boost and Microsoft sees Office as a way to vibe work.
Add it up and the message from LLM giants is clear: Here are our foundational models at your service.
Let's take some LLM and AI agent inventory.
Anthropic
The company released Claude Sonnet 4.5 and the LLM seems to thrive at coding, but the bigger launch in the long run may be the addition of context editing and a memory tool in the Claude Developer platform.
Claude Sonnet 4.5 will have the ability to handle long-running tasks without hitting context limits or losing information. For an AI agent tasks with a project, the ability to work on something for a longer time means developers will have options for higher level tasks.
Anthropic is pretty clear about its goals with Claude Sonnet 4.5. The company says the latest Claude is "the best model in the world for building agents."
According to Anthropic, Claude Sonnet 4.5 will be able to process codebases, analyze hundreds of documents and maintain tool interaction histories. The general idea is that the latest Claude can develop software and carry out other tasks on the fly.
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Microsoft
For its part, Microsoft is also weaving agentic AI tools into its applications. The company said it is bringing "vibe working" to Microsoft 365 Copilot with Agent Mode in Office apps and Office Agent in Copilot.
In a nutshell, Microsoft's agents will be able to create spreadsheets and docs in Excel and Word and whip up PowerPoints with just a conversation.
Agent Mode will tap into Excel natively and leverage OpenAI's latest reasoning tools.
Office Agent in Copilot chat will leverage Anthropic models to whip up Word docs and PowerPoint presentations.
Will vibe working become a thing? You know Microsoft will give it a go and the term may just stick.
OpenAI
OpenAI, which has become the more consumer-centric LLM play, launched ChatGPT Instant Checkout and the Agentic Commerce Protocol, which was developed with Stripe.
With Instant Checkout, OpenAI said ChatGPT Plus, Pro and Free users can buy from Etsy directly in a chat. The company will add Shopify merchants soon. You see where this is going. OpenAI will be a commerce engine and get a little cut as commerce via ChatGPT expands.
For the broader agentic commerce play, OpenAI said it is open-sourcing Agentic Commerce Protocol, which is the technology behind Instant Checkout. "For shoppers, it’s seamless: go from chat to checkout in just a few taps. For sellers, it’s a new way to reach hundreds of millions of people while keeping full control of their payments, systems, and customer relationships," said OpenAI in a post.
This Agentic Commerce Protocol launch will get interesting because it's one of the first time AI players have decided to compete. Google launched Agent Payments Protocol earlier this month.
Here's the workflow for OpenAI's Agentic Commerce Protocol.
