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Cheapest serverless functions

Event-driven workloads and lightweight APIs shouldn't pay for always-on servers. This shortlist ranks serverless function platforms by price and startup fit, surfacing pay-per-use compute that scales to zero when idle. Weigh cold-start behavior, runtime and language support, and execution limits against your workload, and look closely at the per-invocation pricing model so cost stays tied to actual use.

AWS Lambda

aws.amazon.com/lambda

Serverless Functions

AWS Lambda is Amazon's serverless compute service that runs code in response to events without provisioning servers, billing per request and duration.

$ BudgetFree · Last reviewed May 2026
Relevant for
Very low entry priceFree tierEstablished & proven

Azure Functions

azure.microsoft.com/products/functions

Serverless Functions

Azure Functions is Microsoft's serverless compute service for running event-driven code without managing infrastructure, integrated with the Azure ecosystem.

$ BudgetFree · Last reviewed May 2026
Relevant for
Very low entry priceFree tierEstablished & proven

Cloudflare Workers

workers.cloudflare.com

Serverless Functions

Cloudflare Workers is a serverless platform that runs JavaScript and WebAssembly at Cloudflare's edge locations close to users.

$ Budgetfrom $5/mo · Last reviewed May 2026
Relevant for
Very low entry priceFree tierEasy to useEstablished & proven

Deno Deploy

deno.com/deploy

Serverless Functions

Deno Deploy is a serverless edge platform for running JavaScript and TypeScript built on the Deno runtime, distributed globally.

$ BudgetFree · Last reviewed May 2026
Relevant for
Very low entry priceFree tierEasy to useLow vendor lock-in

Fastly Compute

www.fastly.com/products/compute

Serverless Functions

Fastly Compute is Fastly's WebAssembly-based edge compute platform, running Rust, JavaScript, and Go code across its global network with sub-millisecond cold starts.

$ Budgetusage-based pricing
Relevant for
Very low entry priceFree trial credit

Google Cloud Functions

cloud.google.com/functions

Serverless Functions

Google Cloud Functions is Google's serverless compute service, launched in 2017, that runs event-driven code without server management.

$ BudgetFree · Last reviewed May 2026
Relevant for
Very low entry priceFree tierEstablished & proven

Google Cloud Run

cloud.google.com/run

Serverless Functions

Google Cloud Run is a fully managed serverless platform that runs stateless containers directly on Google's infrastructure, automatically scaling from zero to many instances based on incoming requests.

$ BudgetFree · Last reviewed May 2026
Relevant for
Very low entry priceFree tierEasy to useStartup program

Netlify Functions

www.netlify.com/products/functions

Serverless Functions

Netlify Functions are serverless functions that add back-end logic to sites hosted on Netlify, deployed from the same Git repo.

$ BudgetFree · Last reviewed May 2026
Relevant for
Very low entry priceFree tierEasy to useEstablished & proven

Vercel Functions

vercel.com/docs/functions

Serverless Functions

Vercel Functions are serverless and edge functions that run back-end code alongside applications deployed on the Vercel platform since 2020.

$ BudgetFree · Last reviewed May 2026
Relevant for
Very low entry priceFree tierEasy to use