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.

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Primary source: X

Why it matters

If the leak is accurate, Anthropic is using Sonnet 5 to compress Opus-like capability into a cheaper production tier, which would pressure rival model pricing and reset developer expectations around long-context agents.

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.

Dario Amodei's Anthropic has moved Claude Sonnet 5 from rumor into the release cycle, with the official Claude account announcing the launch on X and @angaisb_ posting on X after a separate leak had already pointed developers toward aggressive pricing and a larger context window.…

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