Anthropic Launches Claude Sonnet 4.5 & Brave Unveils Ask Brave AI Search Tool

Just three days after Anthropic revealed plans to grow its global presence, triple its international workforce, and grow its applied AI team 5x, the artificial intelligence (AI) company just introduced a new model that promises to deliver better abilities.

Anthropic calls its new Claude Sonnet 4.5 model “the best coding model in the world,” “the strongest model for building complex agents,” and “the best model at using computers,” as it shows major improvements in reasoning and math.

Claude Sonnet 4.5 is state-of-the-art on the SWE-bench Verified evaluation, where Anthropic noted that the model was able to maintain focus for over 30 hours on complex, multi-step tasks.

“Claude Sonnet 4.5 amplifies GitHub Copilot's core strengths. Our initial eval shows significant improvements in multi-step reasoning and code comprehension—enabling Copilot's agentic experiences to handle complex, codebase-spanning tasks better,” said Mario Rodriguez, Chief Product Officer of GitHub.

Furthermore, experts in finance, law, medicine, and STEM said the new model showed better domain-specific knowledge and reasoning when compared to older models.

“Claude Sonnet 4.5's edit capabilities are exceptional—we went from 9% error rate on Sonnet 4 to 0% on our internal code editing benchmark. Higher tool success at lower cost is a major leap for agentic coding. Claude Sonnet 4.5 balances creativity and control perfectly,” said Michele Catasta, President of Replit.

The model also comes with extensive safety training that improves its behavior and reduces sycophancy, deception, power-seeking, and delusional thinking, while also defending against prompt injection attacks.

Anthropic also said it was releasing a set of upgrades to its products.

This includes checkpoints in Claude Code, which allows users to save their progress and roll back to previous states instantly. It also comes with a refreshed terminal interface and a native VS Code extension.

Claude API comes with a new context editing feature and memory tool, allowing agents to run longer and handle greater complexity. Developers leveraging the Claude AI API can now integrate these enhanced capabilities directly into their own applications, enabling more advanced agent workflows, better context retention, and scalable enterprise-level performance through secure API access.

Claude apps come with code execution and file creation directly into conversations, while the Claude for Chrome extension has now become available to waitlisted Max users.

Anthropic is also offering developers the infrastructure that powers their frontier products, which was also used to make Claude Code through Claude Agent SDK.

The company’s Claude AI model is popular in the enterprise AI sector, where it holds the top market share on a global scale—around 80% of its customers hail from outside the US, with South Korea, Australia, and Singapore acting as its major customers.


As the race in the AI sector continues, companies are looking to infuse the technology into their products and offerings to customers.

Brave, a popular internet browser and alternative to Google’s Search, announced the launch of Ask Brave, a single interface that combines the functionality of a search engine and an AI chatbot.

This feature is free to use, is available on any browser or platform, and can be accessed from the Brave Search homepage and at the top of the Brave Search results page.

“With Ask Brave, users no longer have to choose between different tools depending on the action they want to perform, juggling between traditional search engines with their ten blue links, and chat-like interfaces with their walls of text,” reads the release announcing the new tool.

“Brave solves this problem by offering a system that combines the best of both approaches, eliminating the unnecessary back-and-forth between different platforms and cumbersome copy-pasting.”

To maintain security and users’ privacy, Brave said questions and conversations won’t be used for training in any way, and chats are “encrypted, ephemeral and expire by default after 24 hours of inactivity.” Furthermore, it doesn't retain IP addresses.

“Brave Search was the first search engine to offer free and public access to AI summaries in 2023, and today we generate more than 15 million AI-powered answers daily with our AI Answers feature. Seeing the engagement of our users with this feature and how much appetite they have for the convenience offered by AI integrated into a search engine, it was a natural step to launch Ask Brave as the evolution of AI Answers,” said Josep M. Pujol, Chief of Search at Brave.

“While AI Answers give our users quick summaries, Ask Brave provides longer answers, follow-ups, and a chat mode enhanced with Deep Research, and most importantly, contextually relevant enrichments such as videos, news articles, products, businesses, shopping, and more—in the right place, at the right time.”


Brave reiterated that AI answers in Brave Search are not new, having previously released the first version of this feature in March 2023 as “Summarizer.”

Ask Brave builds on AI Answers (originally Answer with AI), which serves over 15 million answers per day, while both will coexist with each other.

Do you think this move will help Brave challenge search engine industry leader Google?

Do you think Anthropic’s new AI model will further push its market share of enterprise AI?

Let us know in the comments below!