How to Access Sonnet 4 in Claude

Updated on:

May 13, 2026

By:

Use this interactive demo to learn how to switch to Claude Sonnet 4 from the model selector.

Quick summary

Accessing Claude Sonnet 4 requires navigating the model selector beneath the New Chat box and choosing Sonnet 4 from the More Models menu. An active Claude subscription is required to enable and use this model.

Steps

In the New Chat tab, tap the model selector located directly below the chat input box.
Hover your cursor over the More Models option in the dropdown menu.
Find and select Sonnet 4 from the list — note that an active subscription is required to access this model.

📌 Why this matters

Claude Sonnet 4 is Anthropic's advanced mid-tier model, offering a significant upgrade in reasoning, instruction-following, and nuanced response quality for both personal and professional use cases. Knowing how to switch models directly from the chat interface means users can immediately take advantage of Sonnet 4's capabilities without navigating complex settings menus. This feature matters because choosing the right AI model directly impacts output quality, task accuracy, and overall productivity. Users with an active Claude subscription can unlock Sonnet 4 in seconds, making it easy to scale up AI performance on demand.

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