Cursor (Anysphere)

ai-devtools · 51-200 people · snapshot 2025-06-10 · unverified · cursor.com

Read the full teardown: What Cursor actually runs

Current stack

CategoryToolSinceConfidenceSource
language TypeScriptBusiness logic, editor and backend monolith — confirmed interview
RustPerformance-critical components incl. Anyrun orchestrator and indexing — confirmed interview
frontend Electron (VS Code fork) 2023 confirmed interview
database PostgreSQL — confirmed interview
vector-db TurbopufferEncrypted files + workspace Merkle trees; emergency migration during indexing outage — confirmed interview
PineconeDocumentation embeddings only — confirmed interview
queue Warpstream — confirmed interview
hosting AWSCPU infra backbone; EC2 + Firecracker for agent isolation — confirmed interview
CloudflareReverse proxy, TLS, DDoS — reported press
Vercelcursor.com website — confirmed interview
inference-infra Azure (H100 GPUs)Inference-only; tens of thousands of H100s overall — confirmed interview
FireworksHosts Fast Apply fine-tuned Llama-3-70b, ~1000 tok/s via speculative decoding — confirmed press
ml-training Voltage Park — confirmed interview
Databricks MosaicML — confirmed interview
Foundry — confirmed interview
llm-provider In-house models (Tab, Fast Apply) — confirmed interview
Anthropic / OpenAI / open-weight (multi-provider) — reported press
observability Datadog — confirmed interview
Sentry — confirmed interview
PagerDuty — confirmed interview
auth WorkOS — confirmed interview
payments Stripe — confirmed interview
analytics Amplitude — confirmed interview
internal-tools Linear — confirmed interview
Slack — confirmed interview

Migrated away from

Sources

Methodology: research assisted by AI agents, verified and edited by a human. Spot an error? Suggest a correction via pull request or email us. Work at Cursor (Anysphere)? Verify your record and get the ✓ badge.