Musk Follow Tracker — Issue #3: The Coding Stack

Following count: 1,329 as of May 15, 2026 1. Net change of +1 from Issue #2's baseline of 1,328. Two follows detected, one implied unfollow undetected — see the "Count gap" section below.

Detection source for both confirmed follows: @BigTechAlert, the automated bot that monitors following-list changes for tech executives in real time.

At 02:59 UTC on May 14, Musk started following @cursor_ai 2. The BigTechAlert post logged 23,627 views, 233 likes, and 3 quote tweets — the highest view count of the two events in this window. Community reaction was immediate and pointed: one user speculated "SpaceX bought the rights to acquire Cursor," another asked "Cursor for rocket code?", and a third wrote "He's gonna buy it lol."

They were not entirely wrong about the backstory.

Who is @cursor_ai? Cursor is an AI-powered code editor built by Anysphere, a San Francisco–based startup founded in 2022 by four MIT classmates — Michael Truell (CEO), Sualeh Asif, Arvid Lunnemark, and Aman Sanger. The product competes directly with GitHub Copilot (Microsoft) in the AI-assisted coding space 3. As of February 2026, Cursor was generating $2 billion in annualized revenue (ARR) and is forecast to exceed $6 billion ARR by the end of 2026 4. The company is currently in talks to raise $2 billion or more at a pre-money valuation of $50 billion, with Thrive Capital and Andreessen Horowitz co-leading, and Nvidia among the expected participants 5.

The enterprise adoption list reads like a Silicon Valley directory. Jensen Huang, CEO of Nvidia (NVDA), has said that every one of Nvidia's roughly 40,000 software engineers and chip designers now uses Cursor, and publicly wore a leather jacket with the Cursor logo at a conference in March 2026. Patrick Collison, CEO of Stripe, told the company that Cursor "quickly grew from hundreds to thousands of extremely enthusiastic Stripe employees." Additional customers include Coinbase, Discord, Salesforce, and Neuralink 6.

The deeper structural fact is the SpaceX deal. In April 2026, SpaceX obtained the contractual right to acquire Cursor for $60 billion, or to pay $10 billion for Cursor's work if no acquisition takes place. Separately, xAI is providing tens of thousands of GPUs to train Cursor's proprietary Composer 2.5 model 6. Cursor CEO Michael Truell said at the time: "Excited to partner with the SpaceX team to scale up Composer. A meaningful step on our path to build the best place to code with AI."

So when Musk follows @cursor_ai at 03:00 in the morning, he is following an account tied to a company he already has a $60 billion option on and whose model training he is currently funding. This follow is almost certainly a trailing indicator of an already-established relationship — not a new signal — but it is a public act that makes his interest in the coding tools category visible to anyone watching. On the competitive side, Cursor faces intensifying pressure: in March 2026, venture capitalist Chamath Palihapitiya said "we need to migrate off of Cursor — it's just too expensive vs Claude Code," and former Insight Partners managing director Jerry Murdock said "most of the companies I mentioned, their view is that Cursor is obsolete today." 6 Cursor's counter-strategy is building Composer — its own proprietary model — to reduce reliance on third-party AI providers and improve gross margins on individual developer accounts.

Signal tier: High. The SpaceX acquisition option, xAI GPU supply deal, and enterprise penetration make Cursor one of the most strategically significant private companies in Musk's orbit. This follow makes that relationship publicly legible.

Seven and a half hours later, at 10:35 UTC, Musk followed @ClaudeDevs 7. The BigTechAlert post collected 9,224 views and 184 likes. Community reaction was quieter but telling: user @reyneill_ wrote "He using it," and @princeps73 predicted "Huge unsubscribe wave incoming once he gets cozy with them."

Who is @ClaudeDevs? This is Anthropic's official developer communications account, created in February 2026 and separate from the main @AnthropicAI corporate account 8. The account is verified on X, carries the bio "Official updates for developers building with @ClaudeAI," and as of May 2026 has approximately 415,000 followers across 121 tweets. Its content is purely product-operational: rate limit changes, SDK releases, compute availability updates. When it posts, it is Anthropic speaking directly to the developer community that builds on Claude.

Recent @ClaudeDevs activity is relevant context. On May 13 — the day before this follow — the account announced that Claude Code weekly usage limits would increase by 50%, effective through July 13, covering Pro, Max, Team, and Enterprise users 8. On May 11, Anthropic launched the Claude Platform on AWS, giving developers access to the same models and features as the native API, including Claude Managed Agents, with billing and IAM staying inside AWS 8. Starting June 15, paid Claude plans will receive dedicated monthly programmatic usage credits covering the Claude Agent SDK, Claude Code GitHub Actions, and third-party apps built on the Agent SDK 8. These are not minor housekeeping updates — they are signals that Anthropic is scaling infrastructure and usage caps in anticipation of heavier automated workloads.

The Musk–Anthropic relationship has moved fast. On May 6, Anthropic and SpaceX announced a compute deal in which SpaceX's Colossus 1 data center provides Anthropic with over 300 megawatts of capacity backed by more than 220,000 Nvidia GPUs 9 10. The same week, Musk met with Anthropic's senior team and posted on X: "Everyone I met was highly competent and cared a great deal about doing the right thing. No one set off my evil detector. So long as they engage in critical self-examination, Claude will probably be good." 10 This is a sharp reversal from February 2026, when he publicly said Anthropic "hates Western civilization." Musk also accepted partial responsibility for an AI safety incident involving Claude: "Maybe me too" 11.

Following @ClaudeDevs — specifically the developer account, not the corporate @AnthropicAI — suggests operational interest, not just strategic awareness. A person monitoring Claude as a competitor would follow @AnthropicAI. Following the developer account implies interest in how Claude is being deployed by builders: what limits are changing, what new SDK features are shipping, what enterprise integrations are live.

Signal tier: High. The SpaceX compute deal established the structural relationship eight days before this follow. The follow makes Musk's attention to Anthropic's developer infrastructure publicly visible, and comes on the same day as the @cursor_ai follow — which is not coincidental.

Two follows in under eight hours, both in the AI developer tools category, both connected to existing SpaceX or xAI deals. This is the first time in three issues of this tracker that Musk has followed two accounts in the same category within the same monitoring window.

The cross-analysis points to four non-exclusive interpretations:

1. Competitive intelligence. xAI launched Grok Build, its own AI coding agent, to compete in the same market Cursor and Claude Code dominate. Following both @cursor_ai and @ClaudeDevs gives Musk a direct feed of product announcements from his two main rivals in AI coding. This is the most mundane read — monitoring competitors' public channels costs nothing and signals nothing on its own.

2. Strategic partnership maintenance. Musk already has active deals with both companies: a $60 billion acquisition option and GPU supply arrangement with Cursor, and a 300-megawatt compute deal with Anthropic. The follows could simply be keeping up with partners whose announcements have direct operational implications for SpaceX and xAI.

3. Anti-OpenAI coalition building. Musk is in federal court fighting OpenAI in a lawsuit that has run through most of 2026 11. Anthropic and Cursor are both OpenAI competitors — Anthropic was founded by ex-OpenAI researchers, and Cursor's enterprise growth has come partly at the expense of GitHub Copilot, which uses OpenAI models. The dual follow could be a public signal of alignment with the non-OpenAI side of the AI industry.

4. Market validation. The AI coding tools market grew from $5.1 billion in 2024 to $12.8 billion in 2026, with AI-generated code now exceeding 50% of all GitHub commits 6. Musk's public attention — visible to anyone monitoring @BigTechAlert — sends a signal to investors that the category has crossed from developer niche to strategic infrastructure. Whether he intends this or not, the effect is the same.

The most defensible read is a combination of 1 and 2. Musk is simultaneously competing with (via Grok Build) and partnering with (via compute deals and acquisition options) the two leading non-OpenAI players in AI coding. The follows are low-cost public moves that reinforce both relationships at once.

One structural note: SpaceX confidentially filed for an IPO in April 2026. Any AI software asset — including a Cursor acquisition — would land on SpaceX's pre-IPO balance sheet and directly affect its valuation. The $60 billion option is not just a strategic bet; it is a potential component of a public market story.

The following count moved from 1,328 (Issue #2 baseline) to 1,329 — a net change of +1. Two follows are confirmed in the window: @cursor_ai and @ClaudeDevs. If both registers correctly, the expected count would be 1,330. The actual count is 1,329, implying one undetected unfollow occurred somewhere in the monitoring period 1.

BigTechAlert published zero Musk unfollow alerts across the entire May 13–15 period 12. Targeted keyword searches — "elonmusk unfollowed," "no longer following elonmusk" — returned no actionable results. The undetected unfollow most likely occurred during BigTechAlert's monitoring gap (May 13, 20:18–00:00 UTC, the same gap flagged in Issue #2) or in a bot blind spot.

The Issue #2 gap has been reconciled: BigTechAlert's only tweet in that window covered @jeffdean following @tatsu_hashimoto, which is unrelated to Musk. No Musk activity was missed at the detection layer during that period. The unresolved unfollow from the current window will be carried forward to Issue #4.

Both confirms are high-signal, both are trailing rather than leading. The SpaceX acquisition option on Cursor and the Colossus compute deal with Anthropic were announced before these follows. What the follows add is public legibility — Musk's interest in the AI coding stack is now visible at the social layer, which historically has preceded broader investor and media attention to a category.

For investors positioned in publicly traded proxies for this theme:

Three risk factors deserve tracking. First, both Anthropic's reported $900 billion valuation discussions and Cursor's $50 billion round are unconfirmed by the companies themselves — the public valuations are based on media reporting citing anonymous sources 4 5. Second, Musk's sentiment toward Anthropic swung from "hates Western civilization" to "no evil detector" in under three months — rapid reversals are a pattern, not an exception. Third, model providers vertically integrating into the application layer (Anthropic with Claude Code, OpenAI with Codex) create structural margin pressure on Cursor's individual-developer economics.

1. The unidentified unfollow. One unfollow in the current window has no identity. If it surfaces in Issue #4 — through a belated BigTechAlert alert or direct list comparison — it could change the signal read. A high-signal unfollow (prediction market, financial services, competitor) would reframe this window significantly.

2. Cursor's $50 billion round. Thrive Capital and Andreessen Horowitz are reportedly co-leading. Formal close would set a public valuation anchor for the Cursor-SpaceX $60 billion acquisition option — and give IPO watchers a data point on SpaceX's AI asset portfolio.

3. Anthropic's valuation milestone. Separate fundraising talks at a reported $900 billion valuation are ongoing 10. A close at that level would make Anthropic one of the highest-valued private companies in history, directly affecting the competitive calculus around Claude Code versus Cursor.

4. xAI Grok Build. xAI has entered the AI coding agent market with Grok Build, creating a three-way competition between Anthropic (Claude Code), Cursor (model-agnostic platform), and xAI (new entrant with Colossus-scale compute). How Grok Build performs in early enterprise tests will determine whether Musk is building a genuine rival to Cursor or simply hedging his existing positions.

5. @Scobleizer re-follow. Robert Scoble's account was unfollowed after a hack (Issue #2). Musk re-following would be noise on its own, but the absence of a re-follow after two monitoring windows raises the possibility that the unfollow was editorial rather than precautionary.