Anthropic ships Claude Sonnet 5.5: faster, cheaper

Anthropic released Claude Sonnet 5.5 (Sept 28), the second model in the Claude 5.5 family, targeting everyday coding, agent and knowledge-work tasks.

Image: anthropic.com

Key points

• Faster than the prior Sonnet 5 (over 30% per Anthropic).
• Lower cost for most work, at pricing comparable to Sonnet 5.
• Available via the API as claude-sonnet-5-5.

Why it matters

Optimizing speed and cost for routine tasks helps businesses adopt AI in daily work at a friendlier price point.

Source: Anthropic