# xAI Frontier AI · Soho · Series E xAI is Elon Musk's frontier AI lab, founded in 2023 and headquartered in Palo Alto, California. Its flagship product is Grok, a conversational AI chatbot integrated into the X (formerly Twitter) platform, alongside foundation models trained on the company's Colossus supercomputer cluster. The company has raised well over $20 billion across equity and debt rounds from major institutions including Fidelity, BlackRock, Sequoia Capital, and Andreessen Horowitz, and by 2025 employed more than 1,200 people. In early 2026 it was folded into an all-stock combination with SpaceX at a reported ~$250B valuation for xAI. - Website: https://x.ai - Careers: https://x.ai/careers - Sector: [Frontier AI & Research Labs](https://aistartupslist.co.uk/sector/frontier-ai.md) ## Facts - Funding stage: Series E - Total raised: $22B - Founded: 2023 - Headquarters: Palo Alto, USA - Team size: 1000+ ## Notable investors Fidelity, BlackRock, Sequoia Capital, Andreessen Horowitz, Lightspeed Venture Partners, SpaceX ## Open UK & remote roles - [AI Tutor - Arabic](https://aistartupslist.co.uk/company/xai/ai-tutor-arabic-bep7ex.md) · Remote International (posted 2026-03-27) - [AI Tutor - Bulgarian](https://aistartupslist.co.uk/company/xai/ai-tutor-bulgarian-v8kyqx.md) · Remote International (posted 2026-08-07) - [AI Tutor - Catalan](https://aistartupslist.co.uk/company/xai/ai-tutor-catalan-vakn70.md) · Remote International (posted 2026-08-07) - [AI Tutor - Croatian](https://aistartupslist.co.uk/company/xai/ai-tutor-croatian-yxsnt1.md) · Remote International (posted 2026-08-07) - [AI Tutor - Czech](https://aistartupslist.co.uk/company/xai/ai-tutor-czech-wzfz1r.md) · Remote International (posted 2026-08-07) - [AI Tutor - Danish](https://aistartupslist.co.uk/company/xai/ai-tutor-danish-b2yaha.md) · Remote International (posted 2026-03-27) - [AI Tutor - Dutch](https://aistartupslist.co.uk/company/xai/ai-tutor-dutch-b4xywx.md) · Remote International (posted 2026-03-27) - [AI Tutor - Farsi](https://aistartupslist.co.uk/company/xai/ai-tutor-farsi-x72zze.md) · Remote International (posted 2026-08-07) - [AI Tutor - Finnish](https://aistartupslist.co.uk/company/xai/ai-tutor-finnish-b4zidr.md) · Remote International (posted 2026-04-01) - [AI Tutor - French](https://aistartupslist.co.uk/company/xai/ai-tutor-french-bx2t5a.md) · Remote International (posted 2026-04-01) - [AI Tutor - Hausa](https://aistartupslist.co.uk/company/xai/ai-tutor-hausa-x2qolf.md) · Remote International (posted 2026-08-07) - [AI Tutor - Hebrew](https://aistartupslist.co.uk/company/xai/ai-tutor-hebrew-bx5w22.md) · Remote International (posted 2026-04-01) - [AI Tutor - Hindi](https://aistartupslist.co.uk/company/xai/ai-tutor-hindi-bx6m5n.md) · Remote International (posted 2026-04-01) - [AI Tutor - Igbo](https://aistartupslist.co.uk/company/xai/ai-tutor-igbo-vajx3f.md) · Remote International (posted 2026-08-07) - [AI Tutor - Indonesian](https://aistartupslist.co.uk/company/xai/ai-tutor-indonesian-17w5ul.md) · Remote International (posted 2026-04-01) - [AI Tutor - Khmer](https://aistartupslist.co.uk/company/xai/ai-tutor-khmer-v9v6i5.md) · Remote International (posted 2026-08-08) - [AI Tutor - Legal & Compliance](https://aistartupslist.co.uk/company/xai/ai-tutor-legal-and-compliance-1d2qys.md) · Remote International (posted 2025-10-03) - [AI Tutor - Malay](https://aistartupslist.co.uk/company/xai/ai-tutor-malay-vanq3s.md) · Remote International (posted 2026-08-07) - [AI Tutor - Norwegian](https://aistartupslist.co.uk/company/xai/ai-tutor-norwegian-bxxmaw.md) · Remote International (posted 2026-04-01) - [AI Tutor - Portuguese](https://aistartupslist.co.uk/company/xai/ai-tutor-portuguese-bvq8kv.md) · Remote International (posted 2026-04-01) - [AI Tutor - Serbian](https://aistartupslist.co.uk/company/xai/ai-tutor-serbian-valgjt.md) · Remote International (posted 2026-08-07) - [AI Tutor - Sinhala](https://aistartupslist.co.uk/company/xai/ai-tutor-sinhala-cll8li.md) · Remote International (posted 2026-07-16) - [AI Tutor - Slovak](https://aistartupslist.co.uk/company/xai/ai-tutor-slovak-v9nh7r.md) · Remote International (posted 2026-08-08) - [AI Tutor - Slovenian](https://aistartupslist.co.uk/company/xai/ai-tutor-slovenian-v9tn1r.md) · Remote International (posted 2026-08-08) - [AI Tutor - Software Engineering Specialist](https://aistartupslist.co.uk/company/xai/ai-tutor-software-engineering-specialist-1raawz.md) · Remote International (posted 2026-02-26) - [AI Tutor - Sorani Kurdish](https://aistartupslist.co.uk/company/xai/ai-tutor-sorani-kurdish-v9y9ex.md) · Remote International (posted 2026-08-08) - [AI Tutor - Spanish](https://aistartupslist.co.uk/company/xai/ai-tutor-spanish-byg3ta.md) · Remote International (posted 2026-04-01) - [AI Tutor - Thai](https://aistartupslist.co.uk/company/xai/ai-tutor-thai-bz8nex.md) · Remote International (posted 2026-04-01) - [AI Tutor - Video](https://aistartupslist.co.uk/company/xai/ai-tutor-video-69r1dv.md) · Remote International (posted 2026-02-10) - [AI Tutor - Yoruba](https://aistartupslist.co.uk/company/xai/ai-tutor-yoruba-vaj3qm.md) · Remote International (posted 2026-08-07) - [Backend Engineer - API](https://aistartupslist.co.uk/company/xai/backend-engineer-api-4hxfb8.md) · London, England, United Kingdom (posted 2026-04-24) - [Infrastructure Security Engineer](https://aistartupslist.co.uk/company/xai/infrastructure-security-engineer-69lorq.md) · Austin, Texas; London, England, United Kingdom; New York, New York; Palo Alto, California; Washington, D.C. (posted 2026-03-26) - [KYC Specialist](https://aistartupslist.co.uk/company/xai/kyc-specialist-y9xs5c.md) · London, England, United Kingdom (posted 2026-08-10) - [Member of Technical Staff - Sandbox Service](https://aistartupslist.co.uk/company/xai/member-of-technical-staff-sandbox-service-1pf7p0.md) · London, England, United Kingdom (posted 2025-12-18) - [Mobile Android Engineer](https://aistartupslist.co.uk/company/xai/mobile-android-engineer-9xdm6l.md) · London, England, United Kingdom (posted 2026-02-19) - [Mobile iOS Engineer](https://aistartupslist.co.uk/company/xai/mobile-ios-engineer-9wiprb.md) · London, England, United Kingdom (posted 2026-02-19) - [Software Engineer - X Money](https://aistartupslist.co.uk/company/xai/software-engineer-x-money-18twp8.md) · London, England, United Kingdom (posted 2026-04-14) - [Sr. Security Engineer - GRC Fintech & Financial Services EU/UK](https://aistartupslist.co.uk/company/xai/sr-security-engineer-grc-fintech-and-financial-services-esmotk.md) · Dublin, Ireland; London, England, United Kingdom (posted 2026-08-12) - [Threat Intelligence Analyst, Threat Disruption](https://aistartupslist.co.uk/company/xai/threat-intelligence-analyst-threat-disruption-jq900w.md) · London, England, United Kingdom (posted 2026-08-19)