{"data":{"slug":"grok-4","etype":"model","name":"Grok 4","cat":"Reasoning","subtitle":"xAI's frontier reasoner — Humanity's Last Exam leader at launch.","summary":"Grok 4 (July 2025) led hard-reasoning benchmarks including Humanity's Last Exam at release, with a Heavy multi-agent tier; Grok 4.1 (November 2025) tuned it for everyday use atop the X platform. Its rollout also featured high-profile alignment stumbles on X — a case study in deploying frontier models into a social feed. Details undisclosed. Point releases 4.3, 4.5 and 4.6 carried the line into mid-2026; Grok 5 — rumored at ~6T parameters, training on Colossus 2 — remained unreleased as of August 2026 with no committed date.","attrs":null,"kf":{"params":"Not publicly disclosed","context":"256K","weights":"Closed","modality":"Text + vision","rel_date":"2025-07","developer":"xAI"},"aliases":["Grok 4 Heavy","Grok 4.1","Grok 4.5","Grok 4.6","Grok 5"],"ticker":null,"exchange":null,"hq":null,"founded":null,"website":null,"status":"Current","region":null,"asof":"2026-01-15","sources":[{"url":"https://x.ai/news/grok-4","label":"Grok 4"}]},"meta":{"found":true,"count":1,"served_from":"site cache (no live upstream calls)","as_of":"2026-10-14T04:49:51+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."}}