Lambda Pricing Calculator - Savings Plans & Provisioned Concurrency

Compute Savings Plans discount Lambda duration charges by ~12% with a 1 or 3-year commitment. Request charges ($0.20/million) are not covered. The same Savings Plan also applies to EC2, Fargate, and other compute services, making it flexible for mixed workloads.

Provisioned Concurrency keeps Lambda functions initialized and ready, eliminating cold starts. You pay an hourly allocation cost plus reduced execution charges. It's ideal for latency-sensitive APIs where consistent sub-100ms response times are required. See our complete guide on provisioned concurrency costs to decide if it's worth it for your workload.

Use Provisioned Concurrency when cold starts impact user experience, such as synchronous APIs, real-time applications, or payment processing. For async workloads like queues or scheduled jobs, standard concurrency is more cost-effective.

Lambda costs = (requests × $0.20 per 1M) + (GB-seconds × architecture rate). GB-seconds are calculated by memory (in GB) × duration (in seconds) × total invocations. ARM/Graviton2 is 20% cheaper than x86 per GB-second.

A Lambda function cost calculator estimates your monthly bill based on request charges, duration charges, and optional costs like Provisioned Concurrency and ephemeral storage. This calculator also factors in Compute Savings Plans discounts and the always-free tier to give you accurate projections.

AWS offers 1 million free requests and 400,000 GB-secondsof compute time per month, plus 100 GB of data transfer out. This free tier doesn't expire after 12 months - it's always free.