{"data":{"slug":"claude-4","etype":"model","name":"Claude 4 (Opus 4 / Sonnet 4)","cat":"Coding","subtitle":"Hybrid reasoning and hours-long agentic coding sessions.","summary":"Claude 4 (May 2025) fused instant responses with extended thinking in one model and pushed agentic coding — Opus 4 could sustain multi-hour autonomous engineering tasks. Anthropic shipped it under its ASL-3 safety standard, the first activation of that deployment tier.","attrs":null,"kf":{"params":"Not publicly disclosed","context":"200K–1M","weights":"Closed","modality":"Text + vision","rel_date":"2025-05","developer":"Anthropic"},"aliases":["Opus 4","Sonnet 4","Opus 4.1"],"ticker":null,"exchange":null,"hq":null,"founded":null,"website":null,"status":"Prior generation","region":null,"asof":"2026-01-15","sources":[{"url":"https://www.anthropic.com/news/claude-4","label":"Claude 4"}]},"meta":{"found":true,"count":1,"served_from":"site cache (no live upstream calls)","as_of":"2026-10-14T03:49:26+00:00","disclaimer":"Research and information only — not investment advice. Structured records carry basis labels (vendor spec / reported / estimate); market quotes are delayed/indicative.","attribution":"Records compiled from vendor documentation, official filings and reputable public reporting; market quotes via financial data providers. See /data-sources."}}