What Happened to Cursor (software)?

Cursor, initially developed by Anysphere, Inc., emerged as a significant player in the AI-assisted software development landscape after its founding in 2022 by four MIT graduates, including Michael Truell and Aman Sanger. The San Francisco-based company quickly gained traction with its AI coding agent and development environment, which assists developers in writing, editing, debugging, reviewing, and refactoring code using natural-language instructions. By early 2026, Cursor had achieved a valuation of $29.3 billion and surpassed $3 billion in annual recurring revenue, growing to $4 billion by June 2026, with over half of Fortune 500 companies reportedly utilizing its tools.

The strategic importance of Cursor became evident as the AI coding market intensified. In November 2024, Cursor itself expanded its capabilities by acquiring Supermaven, an AI code-completion startup, integrating its team and winding down the standalone product by late 2025. The major turning point for Cursor came in April 2026 when SpaceX, which had merged with Elon Musk's AI lab xAI in February 2026, announced a deal giving it the right to acquire Anysphere for $60 billion or pay $10 billion for joint work. This arrangement provided Cursor with access to xAI's Colossus computing infrastructure for training its own models, a crucial step as competitors like Anthropic and OpenAI had begun bundling their models with their own coding tools.

SpaceX exercised its purchase right, and the $60 billion all-stock acquisition of Cursor was formally announced on June 16, 2026, just days after SpaceX's historic IPO. The deal closed on August 14, 2026, making Cursor a wholly owned subsidiary integrated into SpaceXAI. For SpaceX, the acquisition was a strategic play to gain developer mindshare, access valuable code-generation data, and provide a direct application layer for its Grok AI models and vast computing resources. For Cursor, it meant access to the "largest fleet of GPUs in the world," enabling the development of more powerful and economical AI models.

Immediately following the acquisition, Cursor, in collaboration with SpaceXAI, unveiled Grok 4.5 in July 2026 and Grok 4.6 in August 2026, showcasing the synergy of their combined resources. However, the acquisition also triggered a significant consequence: on August 29, 2026, OpenAI announced its intention to terminate its contract with Cursor, cutting off access to OpenAI models by November 12, 2026. OpenAI cited concerns about SpaceX's compliance with terms of service, referencing past issues with other Elon Musk-owned companies. While Cursor co-founder Michael Truell noted that OpenAI models constituted only about 5% of Cursor's user traffic, this move challenges Cursor's previously model-agnostic approach. As of August 29, 2026, Cursor continues to operate, now under the SpaceXAI umbrella, with a stated commitment to offering users choice among various models, including its newly integrated Grok models, alongside existing support for Anthropic and Google models.