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Claude Sonnet 4.6

Ai Tool

Claude is a series of large language models developed by Anthropic. The first model was released in March 2023, and the latest, Claude Sonnet 4.6, in February 2026.

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Claude Sonnet 4.6

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Claude Code Security preview lands alongside key CLI hardening

Anthropic shipped a limited Claude Code Security preview to scan repos and suggest patches, alongside CLI updates that improve remote build control, sandboxed hooks, and context efficiency. Anthropic’s code-scanning capability is now built into Claude Code as a limited research preview for Enterprise and Team customers, with human-in-the-loop patch suggestions and expedited access for OSS maintainers, per coverage from [CSO Online](https://www.csoonline.com/article/4136294/anthropics-claude-code-security-rollout-is-an-industry-wakeup-call.html). In parallel, the CLI added a new remote-control mode for external builds, hardened HTTP hooks behind a sandbox proxy and explicit allowedEnvVars, persisted large tool outputs to disk to save context, and fixed a workspace-trust gap—plus a Windows crash fix in the VS Code extension ([v2.1.51](https://github.com/anthropics/claude-code/releases/tag/v2.1.51), [v2.1.52](https://github.com/anthropics/claude-code/releases/tag/v2.1.52)). Teams are also adjusting to a simplified CLI output that hides some file I/O; practitioners suggest prompting for a pre-action file list to restore transparency and control, effectively a dry-run step ([community thread](https://www.reddit.com/r/ClaudeCode/comments/1rdj2hm/handling_the_simplified_output_changes_in_the/)). The wider ecosystem is keeping pace—LangChain’s Anthropic integration updated headers for 1M-context handling, model IDs, and tests, smoothing orchestration in agent workflows ([release notes](https://github.com/langchain-ai/langchain/releases/tag/langchain-anthropic%3D%3D1.3.4)).

calendar_today 2026-02-24

anthropic claude-code claude-code-security visual-studio-code langchain

Claude Code v2.1.49 hardens long-running agents, adds audit hooks, and moves Max users to Sonnet 4.6 (1M)

Anthropic shipped Claude Code v2.1.49 with major stability and performance fixes for long-running sessions, new enterprise audit controls, and a Max-plan model shift to Sonnet 4.6 with a 1M-token context window. The v2.1.49 release notes highlight concrete fixes for memory growth in WASM parsing and layout engines, background agent interrupt handling (double Ctrl+C/ESC), faster non-interactive startup (-p), plugin scope auto-detection, and a prompt cache regression fix, plus simple mode gains a direct file edit tool and SDKs now expose capability flags like supportsAdaptiveThinking ([release](https://github.com/anthropics/claude-code/releases/tag/v2.1.49)). Enterprise teams get a new ConfigChange hook to log or block config edits mid-session, and Max-plan users should switch to Sonnet 4.6 (1M) as Sonnet 4.5 (1M) is being removed. For context on why these changes matter, Anthropic engineers have emphasized prompt caching as key to cost/latency on long-lived agent workflows ([note](https://simonwillison.net/2026/Feb/20/thariq-shihipar/#atom-everything)), and leadership is openly reframing developer roles toward reviewing and steering AI-authored code rather than typing it by hand ([Boris Cherny interview](https://www.youtube.com/watch?v=We7BZVKbCVw&t=977s&pp=ygUYQUkgY29kaW5nIGFnZW50IHdvcmtmbG93)).

calendar_today 2026-02-20

claude-code anthropic claude-sonnet-46 github sonnet-46

Windsurf ships new models, Linux ARM64, and enterprise hooks

Windsurf rolled out new frontier coding models, full Linux ARM64 support, and enterprise-grade Cascade Hooks while community feedback spotlights its transparent crediting versus rivals' opaque limits. Windsurf’s latest updates add Gemini 3.1 Pro, Claude Sonnet 4.6, GLM-5, Minimax M2.5, and GPT-5.3-Codex-Spark with time-limited credit multipliers, plus quality-of-life fixes and features like automatic Plan→Code switching, skills loading from .agents/skills, tracked rules in post_cascade_response, and diff zones auto-closing on commit; importantly, it now provides full Linux ARM64 deb/rpm packages and enterprise cloud config for Cascade Hooks with Devin service key auth, as detailed in the [Windsurf changelog](https://windsurf.com/changelog). A power user’s comparison underscores cost control and predictability: they favored Windsurf’s clear credit model over Cursor/Claude Code’s rate-limit surprises, keeping GitHub Copilot Pro+ for predictable premium requests while continuing to code primarily in Windsurf, per this [Reddit write-up](https://www.reddit.com/r/windsurf/comments/1r9b58e/i_almost_left_windsurf/).

calendar_today 2026-02-20

windsurf gemini-31-pro claude-sonnet-46 glm-5 minimax-m25