On September 28, local time, Anthropic released the Sonnet 5.5 model. Anthropic said Sonnet 5.5 runs more than 30% faster than Sonnet 5, and is a low-cost alternative to Opus 5.5. Sonnet 5.5 is priced at $2 per million input tokens, $10 per million output tokens, and $0.2 per million cache reads. Additionally, Anthropic said the Haiku 5.5 model is coming soon and is designed for fast, high-throughput tasks.

On September 28, local time, Anthropic released the Sonnet 5.5 model. Anthropic said Sonnet 5.5 runs more than 30% faster than Sonnet 5, and is a low-cost alternative to Opus 5.5. Sonnet 5.5 is priced at $2 per million input tokens, $10 per million output tokens, and $0.2 per million cache reads. Additionally, Anthropic said the Haiku 5.5 model is coming soon and is designed for fast, high-throughput tasks.