Stochastic Gradient Descent (SGD)
Stochastic gradient descent (SGD) is a first-order optimization method that updates parameters using a gradient estimate computed from a randomly selected example or subset of examples.
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Anthropic Cyber Verification Program
The Cyber Verification Program (CVP) is an application-based access program run by Anthropic that lets vetted cybersecurity practitioners and organizations use Claude models with some of their real-time cyber safeguards relaxed.
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Claude Fable 5.1
Claude Fable 5.1 is a large language model developed by Anthropic and released on September 1, 2026 as the successor to Claude Fable 5 in the company's Mythos-class tier, the family of Claude models that sits above the Opus class.
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Adaptive thinking is an inference-time reasoning mode in the Anthropic Messages API in which a claude model decides, on a per-request basis, whether to use extended thinking at all and how much of it to spend
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