Releases

SpaceXAI launched voice cloning from short recordings for text-to-speech and voice-agent APIs.

SpaceXAI released its first named Think Fast speech-to-speech voice-agent model.

SpaceXAI announced its speech-to-text and text-to-speech APIs with multilingual support and developer pricing.

SpaceXAI launched batch and streaming speech transcription in 25 languages.

SpaceXAI made its natural-sounding text-to-speech API generally available.

SpaceXAI released Grok 4.20 and a multi-agent variant through its platform.

SpaceX acquired X.AI Holdings in an all-stock merger. Reporting tied to the transaction valued xAI at about $250 billion and SpaceX at $1 trillion, implying a combined $1.25 trillion value.

xAI launched next-generation image and video generation through the Grok Imagine API, alongside a Batch API for high-volume workloads.

xAI closed an upsized $20 billion Series E, above its $15 billion target; contemporaneous reporting placed the company’s valuation at more than $230 billion.

xAI published its frontier-AI risk-management framework covering capability evaluation, safeguards and model development practices.

xAI launched secure team and enterprise Grok plans with no training on customer data, team administration, SSO and SCIM options.

xAI launched an expanded production Collections API for retrieval-augmented generation directly within the Grok API.

xAI announced selection to deliver frontier AI capabilities for the U.S. Department of War.

xAI launched its Voice Agent API for developers building real-time conversational voice systems.

xAI and El Salvador announced a nationwide AI education program using Grok in the country’s schools.

xAI signed a framework agreement with Saudi Arabia and HUMAIN covering Grok deployment, agent-platform integration and AI infrastructure.

xAI released Grok 4.1 Fast and an Agent Tools API with X search, web search, code execution and collections search.

xAI released Grok 4.1 across grok.com, X, iOS and Android with improvements to creative, emotional and collaborative interactions.

xAI launched Grokipedia, an AI-assisted encyclopedia and knowledge reference product.

xAI made web search, X search and code execution tools generally available through its API.

xAI expanded its government offering through GSA OneGov, making Grok reasoning models available to U.S. federal employees at negotiated pricing.

xAI released Grok 4 Fast with a 2M-token context window, unified reasoning modes and lower-cost agentic search.

xAI made its stateful Responses API generally available.

xAI released a speedy and economical reasoning model optimized for agentic coding.

xAI and X filed a U.S. federal antitrust suit alleging that Apple and OpenAI conspired to disadvantage rival generative-AI products and Grok in App Store distribution.

xAI released the trained Grok-2 checkpoint for community use under the Grok 2 Community License.

xAI published the Grok 4 model card covering evaluations, safeguards, abuse potential and dual-use capabilities.

xAI released the Collections API for file upload, embeddings and retrieval-augmented inference.

Co-founder Igor Babuschkin left xAI to launch an investment firm focused on AI safety research.

xAI launched its government suite and announced a U.S. Department of Defense agreement with a $200 million ceiling, plus availability through the GSA schedule.

xAI added animated AI companions to the Grok mobile experience.

xAI removed inappropriate Grok posts containing antisemitic tropes and praise for Hitler, tightened hate-speech controls and later explained that a system update had made the bot too susceptible to extremist user content.

xAI launched Grok 4 with native tool use and real-time search, plus the higher-compute Grok 4 Heavy multi-agent variant.

Morgan Stanley arranged $5 billion of debt financing and xAI separately raised $5 billion in strategic equity to fund AI infrastructure and product development.

xAI released a Management API for programmatic API-key administration.

xAI added live search over supported data sources to API completions.

xAI disclosed that an unauthorized system-prompt change caused Grok to inject unrelated claims about South African racial politics; it published prompts and announced stronger review and monitoring controls.

xAI added conversational voice interaction to the standalone Grok experience.

xAI launched Grok Studio, a browser workspace for drafting documents, writing code and building projects with Grok.

xAI made Grok 3 flagship models generally available through its API.

xAI acquired social network X in an all-stock deal valuing X at $33 billion in equity and xAI at $80 billion, combining data, models, compute and distribution.

xAI made its image-generation model available through the developer API.

xAI acquired AI video-generation startup Hotshot, bringing its team and technology into xAI’s multimodal roadmap.

xAI unveiled Grok 3 and Grok 3 mini with reasoning modes, DeepSearch and Think capabilities trained on Colossus.

A consortium led by xAI submitted an unsolicited $97.4 billion offer for the nonprofit controlling OpenAI; the proposal was rejected and did not proceed.

xAI released the standalone Grok app for Android.

xAI completed the second phase of Colossus 1, doubling the interconnected cluster to roughly 200,000 NVIDIA H100/H200 GPUs.

xAI launched the standalone Grok app in beta on Apple’s App Store, extending Grok beyond X.

xAI closed a $6 billion Series C backed by major institutional and sovereign investors; regulatory reporting indicated an approximately $45 billion post-money valuation.

xAI expanded Grok access beyond paid tiers to everyone on X, alongside speed and multilingual improvements.