Chat

Claude's core text conversation is **available on all plans including free** at claude.ai, with apps for Windows, macOS, Linux, iOS, and Android. The free tier now runs on **Claude Sonnet 5.5** (the Sonnet 4.x line is long superseded) with 5-hour session usage caps; Pro unlocks Opus access and 5x the usage of Free, Max adds a 5x or 20x-of-Pro tier. As of September 2026, Anthropic is **merging Cowork and chat into one 'Claude' experience** on Pro/Max first (see the Cowork Mode entry in this file), so the line between 'just chatting' and handing off a multi-step task is disappearing.

Available on: Windows macOS Linux iOS Android web API

Verified: 2026-09-28

Sources: https://claude.ai, https://www.anthropic.com/pricing, https://support.claude.com/en/articles/8664678-change-the-model-effort-and-thinking-settings