AWS Lambda vs Bun: Pricing Comparison 2026
Side-by-side pricing comparison of AWS Lambda and Bun. See all plans, features, and costs at a glance.
Bottom line: AWS Lambda starts at $2.1e-9/mo, making it $20/mo cheaper than Bun ($20/mo). Bun offers a free plan.
Last updated: July 6, 2026
AWS Lambda vs Bun: Quick Pricing Facts
| Feature | AWS Lambda | Bun |
|---|---|---|
| Starting Price | $2.1e-9/mo | $20/mo |
| Number of Plans | 50 | 4 |
| Free Tier | No | Yes |
| Pricing Model | usage-based | open-source |
| Annual Discount | N/A | N/A |
AWS Lambda is the more affordable option, starting at $2.1e-9/mo compared to Bun's $20/mo. Both are Hosting & Infra tools with 54 combined pricing plans and 11 features compared.
Bun stands out with a free plan for getting started. AWS Lambda uses usage-based pricing while Bun uses open-source pricing, which may affect your total cost at scale.
Review the detailed tier-by-tier comparison above to see exactly which features are included at each price point and find the best fit for your Hosting & Infra needs.
| Pricing Plans |  AWS Lambda Try free |  Bun Try free |
|---|---|---|
| Tier 1 | x86 Price Custom pricing | |
| Tier 2 | First 6 Billion GB-seconds / month $0/monthCheapest | |
| Tier 3 | Next 9 Billion GB-seconds / month $0/monthCheapest | |
| Tier 4 | Over 15 Billion GB-seconds / month $0/monthCheapest | |
| Tier 5 | Arm Price Custom pricing | - |
| Tier 6 | First 7.5 Billion GB-seconds / month $0/monthCheapest | - |
| Tier 7 | Next 11.25 Billion GB-seconds / month $0/monthCheapest | - |
| Tier 8 | Over 18.75 Billion GB-seconds / month $0/monthCheapest | - |
| Tier 9 | 128 $0/monthCheapest | - |
| Tier 10 | 512 $0/monthCheapest | - |
| Tier 11 | 1024 $0/monthCheapest | - |
| Tier 12 | 1536 $0/monthCheapest | - |
| Tier 13 | 2048 $0/monthCheapest | - |
| Tier 14 | 3072 $0/monthCheapest | - |
| Tier 15 | 4096 $0/monthCheapest | - |
| Tier 16 | 5120 $0/monthCheapest | - |
| Tier 17 | 6144 $0/monthCheapest | - |
| Tier 18 | 7168 $0/monthCheapest | - |
| Tier 19 | 8192 $0/monthCheapest | - |
| Tier 20 | 9216 $0/monthCheapest | - |
| Tier 21 | 10240 $0/monthCheapest | - |
| Tier 22 | Durable Operations Custom pricing | - |
| Tier 23 | Operations such as Steps, Waits, and Callbacks $8/monthCheapest | - |
| Tier 24 | Storage Custom pricing | - |
| Tier 25 | Data Written $0/monthCheapest | - |
| Tier 26 | Data Retained $0/monthCheapest | - |
| Tier 27 | Total compute (seconds) $1000000/monthCheapest | - |
| Tier 28 | Total compute (GB-s) $32000000/monthCheapest | - |
| Tier 29 | Billable compute $32000000/monthCheapest | - |
| Tier 30 | Compute cost $31600000/monthCheapest | - |
| Tier 31 | Total requests Custom pricing | - |
| Tier 32 | Billable requests $2000000/monthCheapest | - |
| Tier 33 | Request cost $1/monthCheapest | - |
| Tier 34 | Operations $1/monthCheapest | - |
| Tier 35 | Operations cost $4/monthCheapest | - |
| Tier 36 | Data written cost $104/monthCheapest | - |
| Tier 37 | Storage (running incl. 7 day wait) $104/monthCheapest | - |
| Tier 38 | Storage (retained 14 days) $104/monthCheapest | - |
| Tier 39 | Data Retained cost $24/monthCheapest | - |
| Tier 40 | Total charges $421/monthCheapest | - |
| Tier 41 | Tenant isolated enviroments (x86) $0/monthCheapest | - |
| Tier 42 | Tenant isolated enviroments (ARM) $0/monthCheapest | - |
| Tier 43 | Ephemeral Storage $0/monthCheapest | - |
| Tier 44 | Cache $0/monthCheapest | - |
| Tier 45 | Restore $0/monthCheapest | - |
| Tier 46 | Processed Bytes $0/monthCheapest | - |
| Tier 47 | SQS $0/monthCheapest | - |
| Tier 48 | MSK or Self-Managed Kafka $0/monthCheapest | - |
| Tier 49 | Requests Custom pricing | - |
| Tier 50 | Duration $0/monthCheapest | - |
← Swipe to compare plans →
Ready to get started? Try either tool free — no credit card required.
Which Should You Choose?
Choose AWS Lambda if:
- •You need serverless compute deployed on AWS for production workloads
- •Lambda's event-driven model and AWS service integrations are architectural requirements
- •Managed serverless scaling for production functions
Choose Bun if:
- •You need a fast JavaScript runtime for local development, testing, and build workflows
- •Bun is free, open-source, and significantly faster than Node.js for development tasks
- •Improving build and test performance in your local development workflow
Lambda is a production compute service. Bun is a development runtime. These serve completely different purposes. You might develop and test functions locally with Bun and deploy them to Lambda for production. Not competing.
Frequently Asked Questions: AWS Lambda vs Bun
Which is cheaper, AWS Lambda or Bun?
How many pricing plans does AWS Lambda have vs Bun?
Does AWS Lambda or Bun offer a free plan?
Can I save money by paying annually for AWS Lambda or Bun?
What is the most popular Bun plan?
Does AWS Lambda or Bun offer custom enterprise pricing?
What pricing models do AWS Lambda and Bun use?
Sources
- AWS Lambda Official Pricing- Vendor pricing page
- Bun Official Pricing- Vendor pricing page
Related Articles
Track Price Changes
Get notified when pricing changes for these tools.