According to @AnthropicAI, Claude Opus 4 and 4.1 have been given the ability to end a rare subset of conversations as part of exploratory work on potential model welfare, as announced on X on 2025-08-15 (source: @AnthropicAI on X, 2025-08-15, https://twitter.com/AnthropicAI/status/1956441209964310583). The announcement specifies the affected models as Opus 4 and 4.1 and frames the scope as rare without quantitative thresholds or deployment metrics (source: @AnthropicAI on X, 2025-08-15, https://twitter.com/AnthropicAI/status/1956441209964310583). The post references deployment on the company’s site via the shared link and does not mention cryptocurrencies, blockchains, tokens, pricing, or exchange details, indicating no direct crypto-market information provided by the source (source: @AnthropicAI on X, 2025-08-15, https://twitter.com/AnthropicAI/status/1956441209964310583).