What tech stack does Anysphere use?

Cursor's backend is described as a large TypeScript monolith handling business logic, with performance-critical pieces written in Rust and bridged via Node.js — most notably 'Anyrun,' a fully-Rust orchestrator that launches isolated agent VMs using AWS Firecracker.

CPU infrastructure runs primarily on AWS (EC2), while model inference runs on Azure (large fleets of NVIDIA GPUs) plus additional newer GPU clouds, with Terraform managing infrastructure-as-code. The company has migrated its data layer over time (off earlier Postgres/Yugabyte setups) toward purpose-built stores for its indexing workloads.

Looking forward, the SpaceX acquisition is expected to route training and inference toward xAI's Memphis data-center complex, potentially shifting some of that cloud dependency in-house over time.

The editor itself is a fork of VS Code built on Electron and TypeScript, which is how Cursor inherits VS Code's extension and keybinding ecosystem. For data, it uses turbopuffer for encrypted codebase vectors and Merkle trees, Pinecone for documentation embeddings, and Warpstream (a Kafka-compatible service) for the event pipeline.

On the commercial and GTM side, the public signals point to Stripe for subscription billing, WorkOS for SSO/enterprise auth, and observability via Datadog, Sentry, and PagerDuty, with Amplitude for product analytics.

Internal work runs on Linear and Slack, and the cursor.com marketing site is hosted on Vercel — a mix of best-of-breed SaaS around a heavily custom core.

Anysphere is a sophisticated, build-first engineering organization that already pays for best-in-class point tools (Datadog, Stripe, WorkOS, Linear) — so the winning pitches complement that stack rather than try to replace its custom Rust/TypeScript core, which it will not outsource.

The biggest spend gravity is in AI infrastructure: GPU/inference capacity, vector and data-pipeline tooling, and anything that improves model-serving economics maps directly to their cost base. Security, compliance, and enterprise-GTM tooling are the emerging budgets as Cursor pushes upmarket.

The SpaceX acquisition adds a caveat: as Cursor integrates with xAI's compute and SpaceX's procurement, some infrastructure decisions may consolidate toward the parent — so time infrastructure pitches before that integration hardens, and frame them against the new owner's standards.