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📋 Claude Changelog

Claude Changelog & Updates

Oct 2024 Claude 3.5 Haiku

Claude 3.5 Haiku & Computer Use

Released Claude 3.5 Haiku and introduced groundbreaking computer use capability - AI that can control computer interfaces.

Nov 2023 Claude 2.1

Claude 2.1 - 200K Context

Introduced 200K token context window, reduced hallucination rates, and improved accuracy on factual questions.

Mar 2024 Claude 3 Haiku/Sonnet/Opus

Claude 3 Family Launch

Released Claude 3 model family: Haiku (fast), Sonnet (balanced), and Opus (most powerful), setting new benchmarks.

Mar 2023 Claude 1

Claude Launch by Anthropic

Anthropic released Claude, an AI assistant built with constitutional AI principles focused on safety and helpfulness.

Jun 2024 Claude 3.5 Sonnet

Claude 3.5 Sonnet

Mid-year upgrade to Claude 3.5 Sonnet with significant improvements in coding, reasoning, and nuanced understanding.

Jul 2025 Claude 4 Sonnet

Claude 4 Sonnet

Released Claude 4 Sonnet with balanced performance and efficiency, optimized for enterprise workloads.

Jul 2023 Claude 2

Claude 2 Release

Upgraded to Claude 2 with improved performance, longer context windows, and better coding abilities.

Feb 2025 Claude 4 Opus

Claude 4 Opus Launch

Next-generation flagship model with massive improvements in reasoning, creativity, and agentic capabilities.

Dec 2025 Claude 4.5

Claude 4.5 Update

Major update across all Claude models with enhanced safety features, extended context, and improved tool use.

Apr 2026 Claude 5

Claude 5 Preview

Announced Claude 5 with breakthrough reasoning capabilities and autonomous task execution.

For the latest updates, visit the official Claude website.