The editor everyone ranks first now has a new owner
Cursor keeps landing at the top of AI code editor roundups. One 2026 comparison names it the best overall AI coding editor. That verdict rests on its Supermaven-powered autocomplete, its support for multiple models, and Composer mode for editing many files at once 4. The reviewer describes it as "an AI tool that happens to be an editor": a VS Code fork rebuilt around AI rather than an editor with AI added later 4.
That feature-by-feature verdict leaves out the biggest change in Cursor's history. On June 16, 2026, SpaceX signed a definitive agreement to acquire the company for $60 billion 3. Sacra reports the deal is tied to Cursor's compute and training partnership with xAI's Colossus infrastructure. The same report says it positions SpaceX to compete with OpenAI and Anthropic in developer tools 3. A reader choosing an editor from a ranking alone would not learn that the tool they are adopting is being folded into Elon Musk's AI ambitions.
How fast Cursor got here
The speed of Cursor's rise explains the price. Wikipedia's history traces its valuations:
- $400 million at a $60 million Series A
- About $2.5 billion in late 2024, as investors bid it up
- $9.9 billion after a $900 million Series C led by Thrive Capital in June 2025
- $29.3 billion after a $2.3 billion Series D co-led by Accel and Coatue in November 2025 2
Sacra adds that Cursor was in talks as recently as mid-April 2026 to raise at least $2 billion at a $50 billion valuation. That round was never announced before SpaceX signed 3.
Revenue grew at a similar pace. Cursor crossed $100 million in annual recurring revenue in January 2025 and passed $500 million by June of that year 2. Sacra calls it the fastest-growing SaaS company ever from $1 million to $500 million ARR, with revenue doubling roughly every two months 3.
The more recent figures don't line up cleanly. Wikipedia says Cursor topped $3 billion ARR by early 2026 2. Sacra estimates about $1.2 billion at the end of 2025, climbing to $4 billion annualized by May 2026 3. Both point to a company operating at multibillion-dollar scale. The precise curve depends on whose numbers you trust.
A discrepancy over timing
The sources also differ on the deal's status. Wikipedia describes Cursor as acquired and integrated into "SpaceXAI" from June 2026, and now characterizes it as Texas-based 2. Sacra's account is more cautious: a signed agreement with closing expected in the third quarter of 2026 3. Until the deal formally closes, Sacra's framing looks more precise. Still, both agree on the direction.
The whole category is consolidating
Cursor is not the only popular editor whose identity has shifted beneath the rankings. The same roundup that crowned Cursor named Windsurf the best editor for beginners. It credited Windsurf's Cascade context tracking, unlimited free Tab completions, and more than a million users 4.
Windsurf no longer exists under that name. Cognition acquired it, and on June 2, 2026, rebranded the desktop product as Devin Desktop 1. Cognition has been merging it into its Devin agent platform 1. Before the acquisition, Windsurf had built its own model line:
- SWE-1.5, shipped in October 2025 with a Cerebras partnership that pushed inference to around 950 tokens per second 1
- SWE-1.6, which continued that lineage 1
- SWE-1.7, released in July 2026 on a Kimi K2.7 base 1
Meanwhile, VS Code with GitHub Copilot remains the incumbent pairing. It combines a free open-source editor with a separately priced AI subscription that Microsoft keeps extending with agent features 1.
The pattern is hard to miss. Within weeks of each other in mid-2026, the top two independent AI editors were absorbed by larger players with their own model and compute agendas. One went to an agent-focused AI lab and the other to a rocket company with an AI subsidiary.
Why it matters for developers
Capability rankings answer a narrow question: which tool works best today. They are useful, and Cursor's lead on features may well be deserved 4. But for teams standardizing on a tool, ownership shapes what comes next:
- which models get prioritized
- how pricing evolves
- where code and telemetry flow
- whether multi-model support survives a parent company with its own models to promote
Sacra's description of the deal as tied to xAI's Colossus infrastructure 3 suggests SpaceX sees Cursor partly as a distribution channel for its own AI stack. That is an inference, not a confirmed roadmap. It is also exactly the kind of risk a "best editor" list cannot capture.
The practical takeaway: treat 2026 editor rankings as snapshots, not long-term recommendations. Cursor may remain excellent under SpaceX. Devin Desktop may become a stronger agent platform under Cognition. Developers who value flexibility have reason to look again at the incumbent Copilot pairing and the open-source alternatives. The roundup notes that tools like Cline and Continue.dev now deliver roughly 80 percent of the paid experience for free 4.
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