Anthropic launches Claude Sonnet 5, now default for Free and Pro users
The new Sonnet-tier model brings near-Opus intelligence to coding and agentic work, a native 1M-token context window, and promotional pricing through August.
Anthropic has released Claude Sonnet 5, calling it the most capable Sonnet-tier model it has shipped, and made it the default model for every Free and Pro user worldwide.
Built for agentic work
Anthropic describes Sonnet 5 as its most agentic Sonnet model yet — able to plan multi-step tasks, use tools like browsers and terminals, and run autonomously at a level that previously required larger, pricier models.
- ▸Native 1 million-token context window
- ▸Near-Opus intelligence on coding and agentic benchmarks, at Sonnet cost
- ▸Promotional pricing of $2 / $10 per million tokens through August 31
Why the pricing window matters
Time-limited promotional pricing gives developers a concrete incentive to migrate workloads now, while the discount lasts — a common pattern labs use to seed adoption before the market settles on a new price point.
Source: Anthropic
