# AWS Lambda pricing

Last confirmed on the vendor's page: 2026-10-14. Source: https://aws.amazon.com/lambda/pricing. Confidence: medium.

Cheapest paid plan: Savings Plans, $1.42 a month.

| Plan | Per month | Unit | Billing | On the vendor's page |
| --- | --- | --- | --- | --- |
| Free Tier | Free |  |  |  |
| Pay-as-you-go | Contact sales |  |  |  |
| Graviton2 (ARM) | Contact sales |  |  |  |
| Savings Plans | $1.42 | unknown | unknown |  |

## Hidden costs and limits

- Duration billing rounds up to the nearest millisecond, but memory billing is per-GB-second at allocated memory (not used memory). Allocating 1 GB but using 200 MB still bills for 1 GB, right-sizing memory is critical
- Provisioned Concurrency: eliminates cold starts but charges $0.0000041667/GB-second even when idle.
- Data transfer out: Lambda itself is cheap, but responses that cross AZ boundaries or leave AWS incur standard EC2 data transfer charges ($0.01-0.09/GB). High-traffic APIs serving large payloads can have transfer costs exceed compute costs
- VPC-attached Lambda: connecting to RDS or ElastiCache inside a VPC adds ~200-500ms cold start overhead and creates ENI resources.
- Ephemeral storage: default 512 MB included, up to 10 GB available at $0.0000000309/GB-second. Processing large files (video, ML models) can add meaningful storage costs
- CloudWatch Logs: every Lambda invocation generates logs. At 5M invocations/month generating 1 KB each, log ingestion costs $2.50/month. High-verbosity logging on high-traffic functions can cost more than the compute itself

## Cite

Toolradar, verified 2026-10-14, https://toolradar.com/tools/aws-lambda/pricing

Full page: https://toolradar.com/tools/aws-lambda/pricing. JSON: https://toolradar.com/tools/aws-lambda/pricing.json. Report an error: https://toolradar.com/openapi.json