Lambda Pricing Calculator - Savings Plans & Provisioned Concurrency

Lambda pricing calculator with Compute Savings Plans and Provisioned Concurrency support. Estimate serverless costs by executions, memory, and duration across all AWS regions.

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Frequently Asked Questions

How do Compute Savings Plans work with Lambda?

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.

What is Lambda Provisioned Concurrency?

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.

When should I use Provisioned Concurrency?

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.

How do I calculate AWS Lambda costs?

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.

What does a Lambda function cost calculator include?

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.

What's included in the AWS Free Tier?

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

What does it cost to trigger Lambda from EventBridge?

Lambda invocation from EventBridge costs the standard Lambda execution fees plus EventBridge pricing ($1.00/M for Event Bus or Scheduler with 14M free tier). Same-account delivery from EventBridge to Lambda is free - no additional delivery charge. For scheduled Lambda functions, EventBridge Scheduler's 14M free invocations makes it very cost-effective.

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Tip

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