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
languageTypeScriptBusiness logic, editor and backend monolith—confirmedinterview
RustPerformance-critical components incl. Anyrun orchestrator and indexing—confirmedinterview
frontendElectron (VS Code fork)2023confirmedinterview
databasePostgreSQL—confirmedinterview
vector-dbTurbopufferEncrypted files + workspace Merkle trees; emergency migration during indexing outage—confirmedinterview
PineconeDocumentation embeddings only—confirmedinterview
queueWarpstream—confirmedinterview
hostingAWSCPU infra backbone; EC2 + Firecracker for agent isolation—confirmedinterview
CloudflareReverse proxy, TLS, DDoS—reportedpress
Vercelcursor.com website—confirmedinterview
inference-infraAzure (H100 GPUs)Inference-only; tens of thousands of H100s overall—confirmedinterview
FireworksHosts Fast Apply fine-tuned Llama-3-70b, ~1000 tok/s via speculative decoding—confirmedpress
ml-trainingVoltage Park—confirmedinterview
Databricks MosaicML—confirmedinterview
Foundry—confirmedinterview
llm-providerIn-house models (Tab, Fast Apply)—confirmedinterview
Anthropic / OpenAI / open-weight (multi-provider)—reportedpress
observabilityDatadog—confirmedinterview
Sentry—confirmedinterview
PagerDuty—confirmedinterview
authWorkOS—confirmedinterview
paymentsStripe—confirmedinterview
analyticsAmplitude—confirmedinterview
internal-toolsLinear—confirmedinterview
Slack—confirmedinterview

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.