Unverified50% confidenceReleaseExact time

Sonnet 4.6 was released in February 2026 and has a context window of approximately one million tokens.

1

Sources

50%

Confidence

Medium-term (~90 days)

Relevance

10/8/2026

First Seen

Valid until: 1/6/2027

Sources

Claude Model Family Explained: How to Choose Between Haiku, Sonnet, Opus, and the Mysterious Mythos

Related Entities

Sonnet 4.6model

Related Claims

UnverifiedAnthropic has officially confirmed that Sonnet 5.5 will arrive within the next few weeks.64% similar VerifiedThe Computer Use technology was first publicly demonstrated by Anthropic in October 2024 at the launch of Claude 3.5 Sonnet.62% similar

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