Anthropic releases Claude Opus 4 7, a less risky model than Mythos

We’re excited about the potential applications Claude can power across industries. We are proud to partner with AssemblyAI, an innovative AI company that is partnering with Anthropic to help power its platform of APIs that transcribe and understand audio data at scale. Notion users can now work more efficiently and improve their writing skills, all within the Notion workspace.” Vivian Shen, CEO of Juni Learning, says, “We evaluated Anthropic against competitors, and for our use case and implementation we chose to incorporate Claude based on its helpful, high-quality responses.

Both Claude 4 models support extended thinking with tool use and parallel tool execution. The Opus 4.1 model improved across most capabilities relative to Opus 4, with notable performance improvements in coding and multi-file code refactoring. Claude Opus 4.1 is an upgrade to Claude Opus 4 in terms of agentic tasks, real-world coding and overall reasoning. Anthropic released the Claude Opus 4.6 model, which introduces a 1 million-token context window in beta and an “adaptive thinking” mode that can pick up on contextual clues for extended thinking.

Context window: Up to 1 million tokens

• Created by OpenAI rival Anthropic, Claude is a “helpful, harmless and honest” chatbot with a built-in ethical constitution.
• Anthropic’s original Claude model introduced its signature Constitutional AI framework, which aimed to align AI behavior with predefined principles rather than relying solely on reinforcement learning from human feedback.
• Claude Cowork is a tool similar to Claude Code but with a graphical user interface, aimed at non-technical users.
• Alongside the release, Anthropic expanded access to its Claude for Chrome and Claude for Excel extensions, which use Claude Opus 4.5 to automate workflows in internet browsers and Microsoft Excel.

The original Claude prioritized safety and transparency from the start, laying the foundation for the company’s alignment-first approach to language model development. All Claude 3 models expanded Claude’s reach into advanced reasoning and image-processing use cases. Claude 3 Haiku offered low latency, Claude 3 Sonnet was faster than Claude 2 and Claude 3 Opus served as the most capable of the three models, scoring highly on reasoning and mathematics benchmarks. Claude 3.7 Sonnet introduced faster responses, enhanced contextual understanding and improvements in coding and front-end web development.

Claude Adds Document Creation Feature (September

The desktop app is always accessible from your dock and includes quick entry for instant access from anywhere in your system. Anthropic rolled out a Claude iOS app in May 2024 and an Android app in July 2024, allowing users to seamlessly continue chats from its web app and use their cameras and photo libraries to leverage Claude’s image analysis capabilities. Claude 2 significantly improved conversational ability, coding performance and user accessibility from the original Claude. Claude 3.5 Sonnet delivered notable performance gains on reasoning and coding benchmarks like GPQA, MMLU and HumanEval. Anthropic states Claude 3.7 Sonnet was the first hybrid reasoning model on the market. According to the company, Claude can create or edit spreadsheets, slide decks, PDFs and other documents directly through the chatbot interface.

It drew attention for demonstrating an apparent ability to realize it is being artificially tested during ‘needle in a haystack’ tests. In February 2026, Anthropic introduced Claude Code Security, which reviews codebases to identify vulnerabilities. In August 2025, Anthropic revoked OpenAI’s access to Claude, calling it “a direct violation of our terms of service”.

Bring a CLI conversation into the desktop app with /desktop, or continue from the web or your phone. Claude Code runs directly in the desktop app. But to assign tasks to Cowork from your phone, you’ll need both. Cowork only runs on the desktop app and works without the mobile app.

The team watched the model build an application, stand up database services, purchase domain names, and perform a SOC 2 audit. One of the big claims that Anthropic has made about this latest version of the tool is that it is able to autonomously code for up to 30 hours. This demonstrates a noticable jump in performance, where most other AI chatbots that are producing code keep to simple developments.

This technique is similar to RLHF, except that the comparisons used to train the preference model are AI-generated. Claude is then fine-tuned to align with this preference model. For the reinforcement learning from AI feedback (RLAIF) phase, responses are generated, and an AI compares their compliance with the constitution. Time described this constitution as “somewhere between a moral philosophy thesis and a company culture blog post”. Anthropic said it intends Claude’s constitution to be a model followed by others in the industry. 4rabet online Anthropic introduced an approach to AI alignment called “Constitutional AI”.

One of Claude’s standout features is its massive context window. Users can also queue tasks and give feedback while Claude keeps working. Claude plans tasks, executes them step-by-step, and keeps you informed as it works—similar to how Claude Code operates, but designed for non-technical workflows.

Anthropic Introduces Claude Cowork (January

Claude can be used for many of the same use cases as other chatbots. Conversations with other chatbots may feel more natural. Sometimes the chatbot is overly cautious and may decline boderline queries, even ones that may seem otherwise harmless.