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 eligible Lambda duration and Provisioned Concurrency charges with a 1 or 3-year commitment. The calculator uses the published rate for your selected region and architecture. Request charges 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 for the allocated concurrency, requests, and execution duration. Provisioned Concurrency requests and duration do not receive the Lambda free tier. This calculator bills them in full and can apply the shared internet data transfer allowance separately. Provisioned Concurrency suits latency-sensitive APIs that need consistent response times. 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. See our complete Lambda pricing breakdown for the full rate tables, tiered discounts, and hidden costs like CloudWatch Logs and cold starts.
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. It uses a flat tier-1 duration rate and doesn't add CloudWatch Logs, SnapStart, Managed Instances, or Durable Functions costs, so treat the result as your requests-and-duration baseline, not a full bill.
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. One exception: the Provisioned Concurrency allocation charge and the duration it serves are never free-tier eligible, even though your request allowance still applies.
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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