Yestino - The Signal ยท Anthropic Claude Sonnethttps://yestino.com/entities/anthropic-claude-sonnet-7f3989Every event involving Anthropic Claude SonnetenAnthropic's Claude Sonnet 5.5 nearly matches Opus 5.5 on benchmarks while costing up to 30 percent less per taskhttps://yestino.com/events/anthropic-s-claude-sonnet-5-5-nearly-matches-opus-5-5-on-ben-4feeadhttps://yestino.com/events/anthropic-s-claude-sonnet-5-5-nearly-matches-opus-5-5-on-ben-4feeadMon, 28 Sep 2026 18:02:10 GMTAnthropic has released Claude Sonnet 5.5, the second model in its Claude 5.5 family. Sources: The Decoder