Claude

Claude is a family of advanced AI models developed by Anthropic, recognised for exceptional reasoning, nuanced writing quality, and safety-oriented training via Constitutional AI and RLHF. As of April 2026 the active lineup is Claude Opus 4.7 (released 16 April 2026 — Anthropic's most capable model, optimised for advanced software engineering and long-horizon agentic work, $5/$25 per million input/output tokens), Claude Sonnet 4.6 (released 17 February 2026 — the balanced speed/intelligence tier with improved agentic search at $3/$15), and Claude Haiku 4.5 (the fastest tier at $1/$5). Opus 4.7 ships with a new tokenizer that produces up to 35% more tokens for the same input text. Claude's strong instruction-following, large context windows, and ability to reason through complex codebases make it widely adopted for Web3 work — smart-contract auditing, regulatory analysis, and tokenomics review — where mistakes carry real financial and legal consequences. Example: Web3 security auditors hand entire protocol repositories to Claude Opus 4.7 to identify reentrancy, oracle-manipulation, and access-control vulnerabilities, leveraging the model's long-context reasoning and ability to explain attack vectors with high precision before human review. Why it matters for AI and data in Web3: Claude's reasoning strength and safety focus make it ideal for critical Web3 applications where misinterpretation has financial consequences — contract auditing, MiCA compliance analysis, governance proposal review. Its nuanced understanding helps prevent AI-introduced security risks in sensitive on-chain systems.

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