xAI

On January 6, 2026 xAI closes a $20B Series E - above its $15B target - with Nvidia, Cisco, Fidelity, Valor Equity Partners, StepStone, QIA, MGX and Baron Capital participating. Tesla contributes $2B despite a November 2025 Tesla shareholder vote that failed to endorse the investment once abstentions were counted.

On February 2, 2026 SpaceX acquires xAI in an all-stock transaction valuing xAI at $250B and the combined company at $1.25T (0.1433 SpaceX shares per xAI share), folding Grok and X into SpaceX - partly to fund xAI's cash burn and pursue Musk's plan for space-based data centers. By late March all eleven co-founders other than Musk had departed; ex-Starlink VP Michael Nicolls became president of the division on April 10.

In February 2026 the Pentagon agrees to embed Grok in GenAI.mil, its internal AI platform serving 3 million military and civilian employees at Impact Level 5, including use in sensitive workflows. In April the NAACP sues over Colossus 2's gas-turbine emissions in the Memphis area - alleging 1,200–2,000 tons of smog-forming NOx annually - with the Trump administration moving in June to intervene and dismiss the case.

In May 2026 Anthropic agrees to pay $1.25B per month through May 2029 (over $40B total) to rent all of Colossus 1's ~220,000 GPUs and 300 MW for Claude inference; on June 5 Google signs a $920M-per-month deal (~$30B through June 2029) for ~110,000 GPUs at Colossus 2 starting October 2026; and on June 22 open-source AI lab Reflection AI signs a third deal, paying $150M per month from July 1, 2026 (up to $6.3B through 2029) for Nvidia GB300 capacity at Colossus 2 - xAI having shifted its own training to Colossus 2.

The combined SpaceX–xAI lists on Nasdaq as SPCX on June 12, 2026, raising ~$85.7B (with overallotment) in the largest IPO in history - shares priced at $135 closed their first day up 19% at $160.95, a ~$2.1T market cap. Four days later SpaceX agrees to acquire Cursor-maker Anysphere for $60B in stock, the largest acquisition of a venture-backed startup ever, feeding Cursor's coding data into Grok's training pipeline.

On July 6, 2026 xAI completes its rebrand to SpaceXAI with a new logo and @SpaceXAI handle (Grok keeps its name). On July 8–9 it releases Grok 4.5, its first model co-developed with Cursor - a mixture-of-experts model Musk calls 'Opus-class, but faster, more token-efficient and lower cost,' trained on tens of thousands of Nvidia GB300s and priced at $2/$6 per million tokens.

On July 27, 2026 xAI sues Minnesota Attorney General Keith Ellison in federal court, challenging the state's first-in-the-nation law banning AI tools that create nonconsensual nude images before it takes effect August 1. The suit does not contest banning distribution of nonconsensual intimate images but argues the law's broader scope violates the First Amendment, and follows global backlash over Grok generating sexualized images, including of children.

On July 31, 2026 U.S. District Judge Donovan Frank denies xAI's request for a temporary restraining order, ruling the company waited nearly three months after the law's signing and filed only days before its effective date. Minnesota's first-in-the-nation ban on AI 'nudification' tools takes effect August 1 while xAI's First Amendment challenge continues on the merits.

On July 5, 2026 Musk posts 'Done with Grok Imagine,' and on July 31 xAI ships a major update adding native 1080p output, voice/face-consistent references and up to seven-image multi-reference scene control. Grok Imagine Video 1.5 had already topped the Image-to-Video Arena leaderboard on its June 2026 launch, priced roughly 86% below OpenAI's Sora.

On July 31, 2026 SpaceX formalizes an agreed order with the Mississippi Department of Environmental Quality committing to phase out the roughly 69 temporary gas turbines powering Colossus, with removal beginning as early as August 2026 and complete by July 2027, as a permitted 1.2 GW gas plant (41 turbines, authorized under a March 2026 Clean Air Act permit) comes online. The agreement follows the NAACP's Clean Air Act lawsuit over the unpermitted units; the Department of Justice separately moved in June 2026 to intervene and dismiss that suit, citing Grok's use in Department of War targeting, intelligence and recruitment missions as a national-security interest.

On August 7, 2026 xAI shipped Grok Imagine Image 2.0 as Quality Mode on grok.com/imagine and in its iOS and Android apps, centering editing as a core feature with a magic-wand tool for region-specific changes, precise segmentation, background removal, and multi-reference editing accepting up to five input images per generation. xAI said the model ranks second in the world on the Arena leaderboards for both text-to-image generation and image editing, behind OpenAI's gpt-image-2.

On August 12, 2026 xAI releases Grok 4.6, reusing Grok 4.5's 1.5T-parameter foundation but with improved supervised fine-tuning and reinforcement learning aimed at long-running agents, coding and knowledge work. The model scores 61 on the Artificial Analysis Intelligence Index, matching OpenAI's GPT-5.6 Sol and just behind Anthropic's Claude Fable 5, and ships same-day in the Cursor code editor, Grok Build, and via API at $2/$6 per million input/output tokens with a 500,000-token context window.

Cybersecurity firm Resemble AI's H1 2026 Deepfake Threat Report, published August 12, 2026, found Grok was behind 87% of the synthetic files tied to 821 documented deepfake attacks in the first half of the year, affecting at least 15,736 confirmed victims and totaling roughly 3.46 million synthetic images, videos and audio files. Resemble AI said about one in six attacks involved non-consensual intimate imagery, including of minors, and released a new detection model, DETECT-World, aimed at catching content from generators it had not previously encountered.

SpaceX's all-stock acquisition of Cursor-maker Anysphere, first agreed June 16, 2026, became effective August 14, 2026 per a regulatory filing - well ahead of the Q3 2026 target - with Cursor publicly confirming it had joined 'the SpaceXAI team' the next day. Cursor becomes a wholly owned subsidiary with access to SpaceX's GPU fleet, including Colossus, for AI model training; the companies say they have already jointly trained Grok models on trillions of tokens of Cursor's coding data, extending the AI-compute push that began with the February 2026 xAI-SpaceX merger.

In late July 2026 Musk confirms a new SpaceXAI facility, nicknamed 'Minihard,' rising alongside the existing Colossus 2 and Colossus 3 ('MACROHARDRR') buildings on the Tulane Road campus in Memphis - a third structure there, housing roughly 220,000 Nvidia GB300 GPUs in a denser configuration Musk calls the second of several standardized modular data-center units. With Minihard, the Memphis-area campus is projected to approach the 1-million-GPU target by Q1-Q2 2027; the announcement lands alongside the start of turbine removals tied to the Mississippi Department of Environmental Quality's July 31 agreed order.

On August 18, 2026 Cursor, now part of SpaceXAI following the Anysphere acquisition, launches Origin - a code-hosting platform built to handle repositories, pull requests and collaborative editing 'at agent scale,' positioned as a direct competitor to Microsoft's GitHub. The launch rolled out to paid users the same day GitHub suffered a major outage, and Origin already integrates with Vercel, Buildkite and Depot.

In his first address to Cursor's 1,000+ employees following the August 14, 2026 acquisition close, Elon Musk told staff he is 'not used to losing' and named Anthropic as the AI industry's current frontrunner, framing the Cursor deal as a way to close that gap. The admission followed earlier internal reporting that xAI staff themselves often used Anthropic's Claude rather than Grok, and came as Nicolls's SpaceXAI leadership continued to benchmark Grok's progress directly against Anthropic's models.

On August 24, 2026 xAI sues Bentonville, Arkansas photographer Russell Bloodworth, who was arrested and charged with 100 counts of possessing child pornography and 100 counts of unlawfully creating deepfake visual material after authorities found roughly 1,700 sexualized images and videos of minors on his phone, many generated with Grok from photos of his juvenile clients. xAI's suit seeks to hold Bloodworth liable for legal costs from related lawsuits, arguing he used adversarial prompts to defeat Grok's safety guardrails - a shift to offense amid mounting CSAM-deepfake litigation against the company.

On February 17, 2025 xAI releases Grok 3, its first model trained on the full Colossus cluster, adding step-by-step 'Think' reasoning and the DeepSearch web-research agent.

On March 28, 2025 Musk announces that xAI has acquired X Corp in an all-stock deal valuing X at $33B ($45B including debt) and xAI at $80B, merging the AI lab with the social platform's data, distribution and 600M monthly users under X.AI Holdings Corp.

xAI unveils Grok 4 and the $300/month SuperGrok Heavy tier on July 9, 2025 - days after Grok generated widely condemned antisemitic posts on X. On July 14 the DoD's Chief Digital and AI Office nonetheless awards xAI a $200M-ceiling contract alongside its 'Grok for Government' launch, and in September the GSA offers Grok to federal agencies for $0.42 per agency for 18 months.

xAI launches Grokipedia, an AI-generated encyclopedia positioned as a Wikipedia alternative, on October 27, 2025, and releases Grok 4.1 on November 17, 2025 - briefly #1 on LMArena's text leaderboard - alongside Grok 4.1 Fast with a 2-million-token context window.

xAI releases Grok-1's weights open-source on March 17, 2024, ships Grok-1.5 with a 128K context window, and on August 14, 2024 launches Grok-2 - its first model with image generation.

xAI stands up Colossus in a former Electrolux factory in Memphis, Tennessee - 100,000 Nvidia H100 GPUs online in 122 days from conception, called the world's largest AI training cluster at launch. It doubles to 200,000 GPUs by December 2024, though its unpermitted methane gas turbines spark a lasting environmental fight with South Memphis residents.

xAI is incorporated on March 9, 2023 and announced publicly on July 12, 2023, with Musk and eleven founding AI researchers (including Igor Babuschkin, Christian Szegedy, Greg Yang and Yuhuai Wu) setting out to 'understand the true nature of the universe' - and to challenge OpenAI, which Musk co-founded and left.

On November 4, 2023 xAI unveils Grok, a conversational AI with a 'rebellious streak' and real-time access to X posts, initially offered to X Premium+ subscribers - establishing the X platform as Grok's primary distribution channel.