Claude

Claude Opus 4.7 landed on April 16, 2026, and after the first 48 hours on X and Reddit the verdict is net-positive but heavily qualified. Power users are calling it state-of-the-art for agentic coding, long refactors, and the viral new Claude Design tool. The loudest complaints cluster around runaway token burn (roughly 1.5-3x more expensive in practice than 4.6), an “ambiguity tax” where the model no longer silently rescues vague prompts, and confidently broken output on marathon runs. Users who prompt like they are writing a spec are getting enormous leverage out of it. Users who prompt the way they used to prompt 4.6 are burning through their usage caps before lunch.

Your AI coding agent has the same file access, shell rights, and database keys you do. A review of 78 studies from January 2026 (arXiv:2601.17548 ) tested every big coding agent. The list ran every major agentic coding assistant . All fell to prompt injection. Adaptive attacks landed more than 85% of the time. This isn’t theory. CVE-2026-23744 gave attackers remote code execution on MCPJam Inspector at CVSS 9.8. A booby-trapped PDF tripped a physical pump through a Claude MCP link at a plant. Attackers hit GitHub’s MCP server to exfiltrate private repository data via malicious issues . And 47 firms fell to a poisoned plugin ecosystem that hid for six months.

The Claude Code skills ecosystem passed 1,340 installable skills in early 2026, and the number keeps climbing. These skills use the universal SKILL.md format : folders of structured instructions that teach AI coding tools to do special tasks. They work across Claude Code, Cursor, Codex CLI, and Gemini CLI without changes. Official skills have shipped from teams at Anthropic, Trail of Bits, Vercel, Stripe, Cloudflare, and dozens of solo devs. Install takes one npx command.

Three focused AI coding agents beat one broad agent working three times as long. Addy Osmani showed this at O’Reilly AI CodeCon , and the finding captures both the upside and the catch of multi-agent work. The speed gains are real. They only show up when you solve the coordination problem. Without file isolation, iteration caps, and review gates, parallel agents make a mess of merge conflicts and duplicated work.

Claude Code, Cursor, and GitHub Copilot take three very different shots at AI-assisted coding: a terminal-native agent, an AI-first IDE, and a multi-IDE plugin. Claude Code leads on raw skill and complex multi-file work, scoring highest on SWE-bench at about 74-81%. Cursor offers the best editor experience with background agents and cloud automation. GitHub Copilot has the lowest entry price at $10/month and the widest IDE support. Most pro developers now mix two or more tools, with Claude Code plus Cursor as the top pair per the JetBrains AI Pulse survey from January 2026.

Git worktrees let you attach many working directories to a single repo. Each one has its own branch checked out. Claude Code ships a native --worktree (-w) flag that handles the setup in one command. It creates a worktree, checks out a new branch, and launches Claude inside it. Run the same command in another terminal and you’ve got a second agent. Scale to five, ten, or more sessions and none of them clash on disk.