---
title: Understand the Cost Impact of Function Invocations
description: Learn how to use Observability to understand function invocations and their cost impact.
url: /kb/guide/understand-cost-impact-of-function-invocations
canonical_url: "https://vercel.com/kb/guide/understand-cost-impact-of-function-invocations"
published: 2025-11-03
last_updated: 2025-11-11
authors: DX Team
related:
  - /docs/observability
  - /docs/observability/limits-and-pricing
install_vercel_plugin: npx plugins add vercel/vercel-plugin
---
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## Related pages

> **For AI agents:** Follow these links to understand how this page connects to the rest of the Vercel ecosystem. For the full cross-link map (inbound, outbound, prerequisites, and semantic neighbors), see the .graph.md link below.

- [Insights](https://vercel.com/docs/observability/insights?from=related) — List of available data sources that you can view and monitor with Observability on Vercel.
- [Legacy Usage & Pricing](https://vercel.com/docs/functions/usage-and-pricing/legacy-pricing?from=related) — Learn about legacy usage and pricing for Vercel Functions.
- [Managing Usage & Costs](https://vercel.com/docs/speed-insights/managing-usage?from=related) — Learn how to measure and manage Speed Insights usage with this guide to reduce events and avoid unexpected costs.
- [Manage & Optimize](https://vercel.com/docs/manage-and-optimize-observability?from=related) — Learn how to understand the different charts in the Vercel dashboard, how usage relates to billing, and how to optimize
- [Manage and Optimize Usage](https://vercel.com/docs/pricing/manage-and-optimize-usage?from=related) — Understand how to manage and optimize your usage on Vercel, learn how to track your usage, set up alerts, and optimize y
- [Investigate latency issues and slowness on Vercel](https://vercel.com/kb/guide/investigate-latency-issues-and-slowness?from=related) — Learn how to use Observability to investigate latency issues and slowness on Vercel.

Full cross-link map for this page: [/kb/guide/understand-cost-impact-of-function-invocations.graph.md](/kb/guide/understand-cost-impact-of-function-invocations.graph.md)
<!-- /docsgraph:related -->


**Problem**: Your consumption is higher than you anticipated, and this is reflected in your invoice.

You can use [Observability](/docs/observability) to help you understand which routes and functions are responsible for consumption. To do so:

1. From your [dashboard](/dashboard), select the project you want to investigate.
   
2. Navigate from your dashboard to the **Observability** tab.
   
3. Choose **Serverless Functions** (pre-selected by default) and select the appropriate timerange (e.g. last 6 hours).
   
4. Sort the routes by **Invocations**, or **Total Duration** to see the most frequently invoked or longest-running routes: {' '}
   
5. Select a route to see the Function view, which displays the number of invocations and the latency distribution.
   
6. Advanced Metrics help you understand memory usage, cold starts and TTFB - which can have an effect on the overall consumption of your route.
   
7. External APIs can show you request durations to upstream APIs, which directly influence the execution duration of your function: {' '}
   

## More resources

- [Observability overview](/docs/observability)
  
- [Observability limits and pricing](/docs/observability/limits-and-pricing)