AWS Lambda Cost Calculator
Estimate AWS Lambda compute and request cost.
With the default inputs, $1.87/month — 1,000,000 invocations. Enter your own numbers below to recompute instantly; the full step-by-step math is shown under the worked example.
Results update automatically as you type.
- • Region-agnostic estimate; free tier not applied.
- GB-seconds
- 100,000
- Compute cost
- $1.67
- Request cost
- $0.2000
- Total / month
- $1.87
Estimate the monthly cost of an AWS Lambda function from invocations, memory and duration. Useful for the serverless glue around AI features.
How this is calculated
Monthly cost = invocations × per-request price + invocations × GB-seconds × compute price, where GB-seconds = (memory in GB) × (duration in seconds). It's region-agnostic and doesn't apply the free tier.
Is this a good result? What to do next
Lambda is cheap for the serverless glue around AI features — usually cents to a few dollars. Memory is the lever people miss: you pay memory × duration, so over-provisioning memory raises every invocation's cost.
Typical planning ranges
- Priced on
- requests + GB-seconds
- Free tier
- not applied here
- Steady high load
- Provisioned/Savings Plans can be cheaper
Ranges are typical planning figures to sanity-check your result, not authoritative benchmarks. Your numbers will vary with use case, volume, and vendor.
How to improve this number
- Right-size memory; measure duration at each setting.
- Shorten cold starts and execution time.
- Consider ARM/Graviton for lower per-GB-second cost.
Common mistakes
- Assuming more memory is free — it multiplies cost.
- Ignoring request cost at very high invocation counts.
When to use a different approach
To include the LLM call, use the Lambda + LLM cost calculator. For the CDN, use the CloudFront cost calculator.
Worked example (defaults)
With the default inputs above, here is the result:
- • Region-agnostic estimate; free tier not applied.
- GB-seconds
- 100,000
- Compute cost
- $1.67
- Request cost
- $0.2000
- Total / month
- $1.87
Sources & references
Frequently asked questions
How is Lambda priced?+
You pay per request plus GB-seconds of compute (memory x duration). This estimate is region-agnostic and does not apply the free tier.