PluginStatslangfuse-vercel has 43,564 recorded weekly downloads on npm, a decrease of 56.6% over the past 30 days.
It ranks #590 of 2,256 tracked npm listings by weekly downloads.
Over 90 days, weekly downloads changed by -63.1%.
PluginStats has 543 daily observations since Apr 23, 2025; the latest is from Oct 17, 2026.
About langfuse-vercel
(Beta) Langfuse Vercel AI SDK Integration JS/TS
[!IMPORTANT] This package is not the latest Langfuse JS/TS SDK. langfuse-vercel is the deprecated v3 Vercel AI SDK integration. Do not use it for new instrumentation.
Latest setup: npm install @langfuse/otel @langfuse/tracing @opentelemetry/sdk-node (AI SDK ≤6: experimental_telemetry + @langfuse/otel). For AI SDK v7 (ai@7), use @langfuse/vercel-ai-sdk. Docs: https://langfuse.com/integrations/frameworks/vercel-ai-sdk — Upgrade: v3 → v4, v4 → v5.
Query traces with Observations API v2 (GET /api/public/v2/observations, API reference), not GET /api/public/traces / api.traceList.
Data freshness: the only real-time path is OpenTelemetry ingestion (@langfuse/otel, or any OTel exporter sending x-langfuse-ingestion-version: 4) combined with the Observations API v2 and Metrics API v2. All other GET APIs from all SDK packages can be up to 10 minutes behind.
This is the JS/TS client for the Langfuse Vercel AI SDK integration. This integration is currently in beta and functionality and interfaces may change.
Documentation
• Docs: https://langfuse.com/docs/integrations/vercel • Reference: https://js.reference.langfuse.com/modules/langfuse_vercel.html
Environments
Supported
• Node.js >=20 • Edge: Vercel, Cloudflare Workers, etc.
Installation
Description from the npm listing.
- langfuse
- legacy
- deprecated
- vercel
- ai-sdk
- llm
- observability
Where langfuse-vercel sits in the listing
Each band is one page of 20. Weekly downloads on a log scale. Placement is projected from weekly downloads, so it can differ from the marketplace's own sort order. Hover a dot to see the listing.
Charts
Images: 30d · 1y · all time · 1600×900 dark
Adoption over time
7/30/90-day growth
Filled points are observed values; hollow points come from Internet Archive snapshots of the listing page. Dashed segments span periods with no observations — values between points are not interpolated.
Recent observations
Full history (543)Similar npm AI SDKs plugins
Data source
Weekly downloads (trailing 7 complete days) come from the official npm downloads API. Downloads include CI and mirrors and are not equivalent to installs or users. npm publishes no ratings.
Listing: https://www.npmjs.com/package/langfuse-vercel. First seen Oct 16, 2026; last successful collection Oct 19, 2026. See the methodology.