November 24, 2025 - Early testing shows it surpasses internal coding benchmarks while cutting token usage in half, and is especially well-suited for tasks like code migration and code refactoring. Claude Opus 4.5 beats Sonnet 4.5 and competition on our internal benchmarks, using fewer tokens to solve the same problems. At scale, that efficiency compounds. Claude Opus 4.5 delivers frontier reasoning within Lovable's chat mode, where users plan and iterate on projects.

May 23, 2025 - Copy the authentication code generated ... paste it into the Claude Code terminal. Once authenticated, Claude Code will be ready to use. For a more comprehensive walkthrough of Claude Code’s features and practical usage, check out our Claude Code guide with examples.

1 month ago - Model access: Max plan subscribers can use Sonnet or Opus 4.5 on Claude Code (switch between them using the /model command). Best for: Everyday use with larger codebases, or power users.

1 month ago - Enter the following commands (depending on the model you’d like to use for that session): For Opus 4.5: claude --model claude-opus-4-5-20251101 · For Haiku 4.5: claude --model claude-haiku-4-5-20251001 · For Sonnet 4.5: claude --model ...

Early testing shows it surpasses internal coding benchmarks while cutting token usage in half, and is especially well-suited for tasks like code migration and code refactoring. Claude Opus 4.5 beats Sonnet 4.5 and competition on our internal benchmarks, using fewer tokens to solve the same problems. At scale, that efficiency compounds. Claude Opus 4.5 delivers frontier reasoning within Lovable's chat mode, where users plan and iterate on projects.

May 31, 2025 - I know he likes detail, but I was slightly worried about the 200-line prompt file he was maintaining. (I later understood that Claude writes a lot of notes into its own file.) I was looking to use Claude Opus 4 with Claude Code (which I tried out last month) and had a specific idea of what I wanted to apply its agentic abilities to.

2 weeks ago - Anthropic’s Claude Opus 4.5 is the company’s newest flagship model focused on coding, agentic workflows, and advanced “computer use.” This article explains what Opus 4.5 is, how it performs on public benchmarks, and — step by step — how to use it inside two developer-focused surfaces: Cursor (an AI-powered IDE) and Claude Code (Anthropic’s command-line agentic coding tool).

September 29, 2025 - Most people should probably just use the defaults - it'll use Opus until you hit 50% usage, then switch to Sonnet for cost efficiency. Pro tip: use /clear often. Every time you start something new, clear the chat.

Windsurf reports Opus 4.1 delivers ... Sonnet 4. We recommend upgrading from Opus 4 to Opus 4.1 for all uses. If you’re a developer, simply use claude-opus-4-1-20250805 ......

May 23, 2025 - If you’re writing production code, you don’t want to bounce between browser tabs or paste snippets into a chatbot. That’s where Cursor and Windsurf come in—two purpose-built tools that let you work with Claude inside your development flow, not around it. This guide shows you how to combine Claude 4 (Opus and Sonnet) with Cursor and Windsurf, including setup steps, prompt patterns, and smart usage tips for faster, cleaner code.

2 weeks ago - Weights & Biases, developer tools for machine learning

September 11, 2025 - Claude Code Opus pairs Anthropic’s Opus 4.1 model with a CLI for deep codebase work. Explore features, use cases, costs, and business-ready alternatives like eesel AI.

Claude Code runs locally in your terminal and talks directly to model APIs without requiring a backend server or remote code index. It also asks for permission before making changes to your files or running commands. Claude Code works with the ...

November 24, 2025 - Loops, conditionals, data transformations, and error handling are all explicit in code rather than implicit in Claude's reasoning. Consider a common business task: "Which team members exceeded their Q3 travel budget?" ... For each person, fetch their Q3 expenses → 20 tool calls, each returning 50-100 line items (flights, hotels, meals, receipts)

November 24, 2025 - Watch the Thinking Blocks: Opus 4.5 will preserve its reasoning context. You can see it planning, checking files, and self-correcting. Approve Changes: Claude will present a diff. Press Enter to apply or R to reject/refine. Opus 4.5 has enhanced "Computer Use" capabilities. It can now inspect ...

1 month ago - By using Claude Opus 4.5, both Cursor and Claude Code can benefit from its deeper reasoning and memory — but which tool you choose depends on your workflow preferences. Switch models thoughtfully — Because Opus is powerful but more expensive, switch only when you need its reasoning strengths. Use planning mode in Claude Code — Have the agent plan out multi-step tasks before executing.

New API capabilities: We’re releasing four new capabilities on our API that enable developers to build more powerful AI agents: the code execution tool, MCP connector, Files API, and the ability to cache prompts for up to one hour. Claude Opus 4 and Sonnet 4 are hybrid models offering two modes: near-instant responses and extended thinking for deeper reasoning.

August 7, 2025 - You don’t have to paste file paths—Claude knows the import tree, variables, and even comments. Use Sonnet for speed during daily work. Switch to Opus when making architectural changes or debugging unfamiliar files. Windsurf AI Editor is a modern, lightweight, and AI-first code editor designed for developers who want to deeply integrate large language models like Claude 4 Opus and Sonnet into their development workflow.