Claude 4 Release
Era: The LLM Era · 2020s–Present
Anthropic released the Claude 4 family (Opus 4 and Sonnet 4), introducing Extended Thinking capability with significant improvements in programming, reasoning, and long-horizon tasks. Claude 4 consolidated Anthropic’s position in the enterprise AI market.
Anthropic
Sources and support
Introducing Claude 4
Anthropic · Source type: primary-announcement
Anthropic announced Claude Opus 4 and Sonnet 4.
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