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Anthropic launches Claude Sonnet 5 as developers wait on price, context and model docs

Anthropic has now announced Claude Sonnet 5 through the official Claude account, shifting the story from leak-watch to whether the new Sonnet tier delivers the claimed price cut, 1M context and near-Opus positioning.

By Ryan Merket · Published Jun 30th, 2026, 11:26am CT · Updated Jun 30th, 2026, 1:54pm CT

Claude Sonnet 5 leak points to a price cut and 1M context, not just a model bump — An X thread says Anthropic will market the model as Sonnet-priced with near-Opus performance, but Anthropic has not posted an official Sonnet 5 launch.

Anthropic has now announced Claude Sonnet 5 through the official Claude account, shifting the story from leak-watch to whether the new Sonnet tier delivers the claimed price cut, 1M context and near-Opus positioning.

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