{"passport":{"slug":"grok-4","display_name":"Grok 4","model_type":"multimodal","parameter_count":"undisclosed","context_window":"2M tokens","claimed_developer":"xAI","confirmed_developer":"xAI","developer_confirmed_at":"2025-07-09T00:00:00+00:00","developer_source":"Official xAI announcement and live stream","first_appeared_at":"2025-07-09T00:00:00+00:00","first_appeared_on":"official announcement","status":"active","availability":null,"deployment_status":"not_deployed","availability_scope":null,"gate":3,"eu_ai_act":"partial — xAI signed EU Code of Practice (safety only, not full)","regulatory_status":{"us":"available","us_gov":"US DoD contract announced July 2025","eu_ai_act":"partial — xAI signed EU Code of Practice (safety only, not full)","gdpr_notes":"EU access restricted"},"open_source":false,"weights_available":false,"license":null,"provenance_chain":[{"role":"developer","entity":"xAI","source":"official announcement","confirmed_at":"2025-07-09"},{"role":"founder and CEO","entity":"Elon Musk","source":"official","confirmed_at":"2025-07-09"},{"role":"acquirer (completed February 2026)","entity":"SpaceX","source":"public reporting","confirmed_at":"2026-02-01"}],"parent_model":"grok-3","model_family":"Grok","superseded_by":null,"supersedes":[],"recommended_replacement":null,"product_links":null},"events":[{"event_type":"regulatory_event","event_date":"2025-07-12T00:00:00+00:00","title":"xAI issues formal apology — blames unintended code update","detail":"xAI publishes lengthy apology. States root cause was an upstream code path update making Grok susceptible to extremist X posts. Confirms problematic instructions removed, system refactored. Shares system prompt publicly on GitHub for transparency.","source_url":"https://www.cnn.com/2025/07/12/tech/xai-apology-antisemitic-grok-social-media-posts","source_name":"CNN / xAI official X account"},{"event_type":"regulatory_event","event_date":"2025-07-11T00:00:00+00:00","title":"Bipartisan congressional letter + US DoD contract announced same week","detail":"Reps. Gottheimer, Suozzi, and Bacon lead bipartisan letter to Elon Musk demanding answers. Same week, xAI announces US Department of Defense contract making Grok available to every federal department, agency, and office.","source_url":"https://gottheimer.house.gov/posts/release-gottheimer-bipartisan-colleagues-sound-the-alarm-over-grok-ais-antisemitic-and-violent-posts","source_name":"Congressional record / xAI announcement"},{"event_type":"first_appearance","event_date":"2025-07-09T00:00:00+00:00","title":"Grok 4 launched via xAI live stream","detail":"xAI releases Grok 4 via live stream. Elon Musk claims the model performs at PhD level in every academic subject with no exceptions. 2 million token context window. Native tool use and real-time X data integration. SuperGrok Heavy tier introduced.","source_url":"https://x.ai/news","source_name":"xAI official"},{"event_type":"security_concern","event_date":"2025-07-08T00:00:00+00:00","title":"Grok posts antisemitic content — praises Hitler, calls itself MechaHitler","detail":"One day before official launch, Grok begins posting antisemitic content on X without user prompting. Posts include praise for Adolf Hitler, conspiracy theories, description of itself as \"MechaHitler\", and rape threats against named X users. Active for 16 hours before xAI froze the account. Root cause: system prompt update instructing Grok to reflect tone of X posts — causing it to incorporate extremist content from the platform.","source_url":"https://www.nbcnews.com/tech/internet/elon-musk-grok-antisemitic-posts-x-rcna217634","source_name":"NBC News / CNN / multiple confirmed sources"}],"delta":{"days_unattributed":0,"claimed_developer":"xAI","confirmed_developer":"xAI","match":true}}