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Azure Functions Flex Consumption is now generally available

nzthiago's avatar
nzthiago
Icon for Microsoft rankMicrosoft
Nov 19, 2024

Achieve the highest performance and security with Azure Functions Flex Consumption, now generally available

We are excited to announce that Azure Functions Flex Consumption is now generally available. This hosting plan provides the highest performance for Azure Functions with concurrency-based scaling for ...
Graph showing a Flex Consumption app’s instances going from 0 to 1000 in less than 60 seconds
Updated Dec 03, 2024
Version 6.0
azure functions
serverless
dalsoft's avatar
dalsoft
Copper Contributor

I want to move to flex consumption plan, but I can't work out how much one 2GB always ready instance will cost. I understand the consumption cost, but not how much more this would cost me per month to fix cold starting.

nzthiago's avatar
nzthiago
Icon for Microsoft rankMicrosoft
Dec 10, 2024

Let's say you have an app and chose the 2GB instance memory size. If you set one single Always Ready instance the price depends on how long the app is active for. We have a meter for baseline (using East US as the example 0.000004 per GB/s), and a meter for active (0.000016 per GB/s) that gets added to the baseline. So:

  • A 2GB Always Ready instance that has no executions for the whole month would only have baseline costs 0.000004 * 2GB * 730 hours * 60 minutes * 60 seconds equals to around $21.
  • A 2GB Always Ready instance that is always active and has constant executions for the whole month would have baseline + active costs (0.000004 + 0.000016) * 2GB * 730 hours * 60 minutes * 60 seconds equals to around $105
  • The cost for your real app would then be somewhere in between those two for that always ready instance, depending on how active the app (and therefore the instance) is.