I think about provisioned concurrency as something that eliminates the cold starts and not something that saves money. There is a bit of saving if you can keep the lambda function running all the time (100%) utilization, but as you've calculated it becomes quite expensive when the provisioned capacity sits idle.
Answer from Tamás Sallai on Stack OverflowAmazon Web Services
aws.amazon.com › compute › aws lambda › pricing
AWS Lambda Pricing
6 days ago - Provisioned Concurrency is calculated from the time you enable it on your function until it is disabled, rounded up to the nearest five minutes. The price depends on the amount of memory you allocate to your function and the amount of concurrency that you configure on it.
Dashbird
dashbird.io › home › knowledge base › aws lambda › provisioned concurrency
AWS Lambda Provisioned Concurrency | Dashbird
June 29, 2021 - One major caveat is that, by enabling Provisioned Capacity, the function is inelligible for the Lambda Free Tier. Another problem is the complexity that the pricing model for Provisioned Concurrency3 adds to the overall Lambda financials.
Pricing of lambda provisioned concurrency
Hello, You may find this doc helpful in accurately estimating and calculating your concurrency: https://go.aws/3Wn9KYQ . If not, feel free to reach out to Support for additional insight: http://go.aws/support-center . - Marc O. More on reddit.com
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May 1, 2024Pricing on lambda
Saying that, when you increase the limit, you risk having some bad situations when a function goes wild and consumes all the available concurrency, which then might have a cost impact. ... The lambda pricing page https://aws.amazon.com/lambda/pricing/ has details on pricing for Provisioned ... More on repost.aws
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September 2, 2022AWS Introducing Provisioned Concurrency for Lambda Functions
The new pricing page for lambda ("Example 2") shows the cost for a 100M invocation/month workload with provisioned capacity for $542/month. For that same cost you could run ~61 Fargate instances (0.25 CPU, 0.5GB RAM) 24/7 for the same price, or ~160 instances with spot. More on news.ycombinator.com
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September 22, 2019AWS Lambda provisioned concurrency vs keeping a lambda warm with events?
For events, keep in mind that pinging your lambda function with scheduled events will probably only keep one container warm, so if multiple requests are made to the function in parallel by users then some requests may still incur a cold start. If you want to keep more containers warm, you can invoke a separate lambda function on a schedule which concurrently makes multiple requests to your service. More on reddit.com
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Reddit
reddit.com › r/aws › pricing of lambda provisioned concurrency
r/aws on Reddit: Pricing of lambda provisioned concurrency
May 1, 2024 -
I was trying to setup provisioned concurrency in AWS lambda, and wanted some guidance on the cost overhead that I'll bear.
Let's say I decide to setup provisioned concurrency as 5.
My memory size 3072 MB.
Estimated total cost per month: $0.00000005 (cost per ms for 3072 mb) * 1000*60*60*24*30 (total ms in a month) * 5 (provisioned concurrency) = 648 $
A) is this calculation correct?
B) With every update do I have to deploy a new version and setup concurrency?
Top answer 1 of 2
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Hello, You may find this doc helpful in accurately estimating and calculating your concurrency: https://go.aws/3Wn9KYQ . If not, feel free to reach out to Support for additional insight: http://go.aws/support-center . - Marc O.
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Calc looks correct to me, but don't forget to factor in the cost of cold starts and potential idle time. And yeah, updating your Lambda function does require a new version deployment and re-configuring concurrency.
Lumigo
lumigo.io › guides › aws lambda 101 › aws lambda cost factors, cost comparisons and optimization [2024]
AWS Lambda Cost Factors, Cost Comparisons and Optimization [2024]
August 30, 2024 - Additional storage can be configured between 512 MB and 10,240 MB in 1 MB increments. ... Ephemeral storage is priced at $0.0000000309 per GB-second. This means you pay for the storage multiplied by the execution time.
The Burning Monk
theburningmonk.com › home › the best ways to save money on lambda
The best ways to save money on Lambda | theburningmonk.com
September 16, 2023 - For example, one provision concurrency for a 128MB function has an uptime cost of just $1.40 per month, plus variable costs based on the no. of invocations and execution time. But one provision concurrency for a 10GB function would have an uptime ...
Awsbites
awsbites.com › 129-lambda-provisioned-concurrency
Lambda Provisioned Concurrency
So imagine that you, I don't know, enable it for seven minutes before disabling it, you will be paying for 10 minutes. The price depends on the amount of memory you allocate. So similar to the invocation cost of a Lambda...
Cloudchipr
cloudchipr.com › blog › aws-lambda-pricing
AWS Lambda Pricing Breakdown: Ultimate Guide 2025
Provisioned Concurrency: $0.0000041667 per GB-second ... If your function exceeds the configured concurrency, additional executions will be billed at the standard rates outlined in the general Lambda pricing.
LinkedIn
linkedin.com › pulse › simplifying-aws-lambda-understanding-reserved-vs-piñero-estrada-davme
Simplifying AWS Lambda. Understanding Reserved vs. Provisioned Concurrency
April 5, 2024 - Understanding and managing concurrency in AWS Lambda is crucial for optimizing performance and cost. Reserved Concurrency is about guaranteeing availability, while Provisioned Concurrency, with its “pre-warm” mode, is about ensuring immediate, predictable performance, eliminating cold start latency.
Amazon Web Services
amazonaws.cn › en › lambda › pricing
Amazon Lambda Pricing
6 days ago - The monthly request price is ¥1.36 per 1 million requests and the free tier provides 1M requests per month. Total requests – Free tier requests = Monthly billable requests(25M+5M+2.5M) requests – 1M free tier requests = 31.5M Monthly billable requests · Monthly request charges = 31.5M ...
Amazon Web Services
docs.aws.amazon.com › aws lambda › developer guide › understanding lambda function scaling › configuring provisioned concurrency for a function
Configuring provisioned concurrency for a function - AWS Lambda
Configuring provisioned ... and billing behavior with provisioned concurrencyUsing Application Auto Scaling to automate provisioned concurrency management · In Lambda, concurrency is the number of in-flight requests that your function is currently handli...
AWS re:Post
repost.aws › questions › QUHrfRYdnySHWgAiqDQnmY8Q › pricing-on-lambda
Pricing on lambda | AWS re:Post
September 2, 2022 - AWS Calculator can help with your cost estimations. https://calculator.aws/#/addService/Lambda ... Increasing the account's concurrency limit as no direct impact on pricing. With Lambda you only pay for what you use.
Hacker News
news.ycombinator.com › item
AWS Introducing Provisioned Concurrency for Lambda Functions | Hacker News
September 22, 2019 - The new pricing page for lambda ("Example 2") shows the cost for a 100M invocation/month workload with provisioned capacity for $542/month. For that same cost you could run ~61 Fargate instances (0.25 CPU, 0.5GB RAM) 24/7 for the same price, or ~160 instances with spot.
Medium
aws.plainenglish.io › what-is-provisioned-concurrency-and-when-should-you-use-it-6eab44e9cd46
What is Provisioned Concurrency- and When Should You Use It? | by Joseph Schambach | AWS in Plain English
June 2, 2025 - Reduce cold start latency in Lambda functions. ... TL;DR: Provisioned Concurrency keeps your AWS Lambda functions “warm,” eliminating cold start delays. This article explains what it is, when to use it (hint: latency-sensitive APIs), and how to set it up using versions or aliases — all with real examples and screenshots.
Serverless
serverless.com › blog › aws-lambda-provisioned-concurrency
Provisioned Concurrency: What it is and how to use it with the Serverless Framework
This setting can be made very simply in the AWS Console. Go to the function in the Lambda service, scroll all the way to the bottom and set it at what you want the minimum provisioned concurrency to always be.
Pulumi
pulumi.com › home › blog › provisioned concurrency: avoiding cold starts in aws lambda
Provisioned Concurrency: Avoiding Cold Starts in AWS Lambda | Pulumi Blog
March 19, 2025 - Learn how to configure AWS Lambda Provisioned Concurrency to minimize cold starts and improve performance with Pulumi.
CloudZero
cloudzero.com › home › blog › a simple guide to aws lambda pricing and cost management
A Simple Guide To AWS Lambda Pricing And Cost Management
December 12, 2024 - Lambda functions come with 512 MB of ephemeral storage by default. You can increase this by 1 MB up to 10,240 MB, with pricing starting at $0.0000000309 per GB-second. When enabled, provisioned concurrency keeps your functions warm.
Medium
medium.com › @msweather › how-to-save-cost-on-aws-lambda-f7fb43cc5e8e
How to save cost on Lambda | Medium
June 26, 2023 - It also charges a flat rate of 20 cents per million invocations. ... There are a few other charges also, such as data transfer fees, may be incurred when certain functionalities are enabled.
Medium
mark-sailes.medium.com › the-other-feature-of-aws-lambda-provisioned-concurrency-saving-money-24e4e5086e1b
The Other Feature of AWS Lambda Provisioned Concurrency — Saving Money | by Mark Sailes | Medium
April 16, 2021 - ... Provisioned Concurrency is billed slightly differently, it has 3 components. Requests and duration are the same as regularly billing. Provisioned concurrency also has a set fee for each GB-second you reserve.
How-To Geek
howtogeek.com › home › cloud › should you use provisioned concurrency for aws lambda functions?
Should You Use Provisioned Concurrency for AWS Lambda Functions?
July 7, 2023 - However, that same function, but with 10 provisioned executions, comes out to a little bit more at $64.50 per month. Overall, it's likely a small 5-10% increase in cost, depending on usage.