This week in AI updates: GPT-5.1, Cloudsmith MCP Server, and more (November 14, 2025)

OpenAI’s latest update delivers GPT-5.1 models and capabilities to give users more control over ChatGPT’s personality

According to the company, users will now have more control over ChatGPT’s tone and style. It had added a few preset tone options earlier this year, and now it is refining the options and adding new ones. The existing ones that will remain unchanged are Cynical (originally Cynic) and Nerdy (originally Nerd), while other presets will be updated, including Default, Friendly (originally Listener), and Efficient (originally Robot). Three entirely new presets are being added as well: Professional, Candid, and Quirky.

GPT-5.1 Instant is warmer and more conversational than its GPT-5 counterpart, and is also better at following instructions. “Based on early testing, it often surprises people with its playfulness while remaining clear and useful,” OpenAI wrote.

It can use adaptive reasoning to decide when it should think before responding, which results in more thorough and accurate answers while still being able to provide quick turnaround times.

The other new model, GPT-5.1 Thinking, also adapts thinking time to the question, meaning it will spend longer working through complex problems and shorter answering simple prompts.

Compared to GPT-5 Thinking, the newer model offers clearer responses with less jargon and fewer undefined terms, according to OpenAI.

Cloudsmith launches MCP Server

Cloudsmith is a company that provides cloud-native artifact management, and this MCP server will allow developers to integrate Cloudsmith’s capabilities directly into their workflows.

Developers can use it to get answers about their repositories, packages, and builds, and can initiate certain actions with full audit logs to maintain visibility over interactions.

“AI is redefining how developers work, moving from manual clicks to natural language interactions. We see this shift every day with our customers. Cloudsmith’s MCP Server is a necessary bridge to this new way of working,” said Alison Sickelka, VP of Product at Cloudsmith. “By integrating directly with tools like Claude and CoPilot, we ensure engineers can manage, secure, and make decisions about their software artifacts simply by asking a question within the environment they already use. This isn’t just about convenience, it brings trusted artifact data and governance exactly where developers build, making the AI part of the secure software supply chain, not separate from it.”

Legit Security releases VibeGuard

VibeGuard is an AI agent for securing AI-generated code when it is created, as well as providing more security controls over coding agents. It links directly into a developer’s IDE to monitor agents, prevent attacks, and prevent vulnerabilities from reaching production. Additionally, it injects security and application context into AI agents to train them to be more secure.

According to recent research by the company, 56% of security professionals cited lack of control over AI-generated code as a top concern. Meanwhile, traditional security tools are reliant on human workflows and reactive scanning, and Legit Security believes that model does not work when code is being generated by AI. It hopes that VibeGuard helps bring the level of security to these tools that is needed today.

Webflow launches new vibe coding capability called App Gen

The web design platform Webflow announced new updates to its platform to align it more with the vibe coding experience, allowing any user to bring their ideas to life regardless of their coding skills.

According to the company, this new capability, App Gen, enables users to move from creating websites into creating web experiences.

It builds on the launch of Webflow Cloud, a full-stack platform for hosting apps directly in Webflow that was announced earlier this year. App Gen leverages a site’s existing design system, content, and structure so that each new creation aligns with their brand and can scale up using Webflow’s cloud infrastructure.

The new capability automatically applies all of a site’s topography, colors, and other layout variables to provide a consistent visual experience between the existing site and new AI-generated features. It also can reuse existing Webflow components to further ensure brand consistency and can connect to the site’s CMS to turn structured content into data-driven interfaces that stay up-to-date across the site.

Microsoft announces release of .NET 10 (LTS)

Microsoft has announced the release of .NET 10, the latest Long Term Support (LTS) release of .NET that will receive support for the next three years. As such, Microsoft is encouraging development teams to migrate their production applications to this version to take advantage of that extended support window.

This release comes packed with features for developers wanting to build with AI. For example, it comes with the Microsoft Agent Framework, which can be used to build agentic systems; Microsoft.Extensions.AI and Microsoft.Extensions.VectorData, which provide abstractions for integrating AI services into applications; and support for MCP.

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