https://www.nextaimodel.com/lines/anthropic-sonnet Every new release in Anthropic's Claude Sonnet line, from Next AI Model. Newest 20 releases. en Sat, 24 Oct 2026 17:12:56 GMT https://www.nextaimodel.com/models/claude-sonnet-5-5 https://www.nextaimodel.com/models/claude-sonnet-5-5 Mon, 28 Sep 2026 12:00:00 GMT Anthropic Anthropic · Claude Sonnet line · released September 28, 2026. Scores 18 points higher than Sonnet 5 on the all-round intelligence index and runs over 30% faster, at the same $2 / $10 price per 1M tokens. https://www.nextaimodel.com/models/claude-sonnet-5 https://www.nextaimodel.com/models/claude-sonnet-5 Tue, 30 Jun 2026 12:00:00 GMT Anthropic Anthropic · Claude Sonnet line · released June 30, 2026. Replaced Sonnet 4.6 as the default model on Anthropic's Free and Pro plans, priced at $2 per million input tokens and $10 per million output tokens. https://www.nextaimodel.com/models/claude-sonnet-4-6 https://www.nextaimodel.com/models/claude-sonnet-4-6 Tue, 17 Feb 2026 12:00:00 GMT Anthropic Anthropic · Claude Sonnet line · released February 17, 2026. https://www.nextaimodel.com/models/claude-sonnet-4-5 https://www.nextaimodel.com/models/claude-sonnet-4-5 Mon, 29 Sep 2025 12:00:00 GMT Anthropic Anthropic · Claude Sonnet line · released September 29, 2025. Claude Sonnet 4.5 completes 61.4% of OSWorld computer tasks, up from 42.2% for Claude Sonnet 4, at the same $3 / $15 price per 1M tokens. https://www.nextaimodel.com/models/claude-sonnet-4 https://www.nextaimodel.com/models/claude-sonnet-4 Thu, 22 May 2025 12:00:00 GMT Anthropic Anthropic · Claude Sonnet line · released May 22, 2025. Anthropic's upgrade to Claude Sonnet 3.7 for coding and reasoning, 65% less likely to take shortcuts on agentic tasks, made available to free users at the same API price. https://www.nextaimodel.com/models/claude-3-7-sonnet https://www.nextaimodel.com/models/claude-3-7-sonnet Mon, 24 Feb 2025 12:00:00 GMT Anthropic Anthropic · Claude Sonnet line · released February 24, 2025. The first Claude model that can either answer at once or think step by step first, with developers setting a thinking budget in the API, at the same price as Claude 3.5 Sonnet. https://www.nextaimodel.com/models/claude-3-5-sonnet-new https://www.nextaimodel.com/models/claude-3-5-sonnet-new Tue, 22 Oct 2024 12:00:00 GMT Anthropic Anthropic · Claude Sonnet line · released October 22, 2024. https://www.nextaimodel.com/models/claude-3-5-sonnet https://www.nextaimodel.com/models/claude-3-5-sonnet Thu, 20 Jun 2024 12:00:00 GMT Anthropic Anthropic · Claude Sonnet line · released June 20, 2024. https://www.nextaimodel.com/models/claude-3-sonnet https://www.nextaimodel.com/models/claude-3-sonnet Mon, 04 Mar 2024 12:00:00 GMT Anthropic Anthropic · Claude Sonnet line · released March 4, 2024. The middle model of the Claude 3 family, available in the API on launch day with a 200K-token context window.