EC2 Spot Instance Advisor
Find your best-fit Spot instance by balancing cost, stability, and interruption risk.
- No signup
- Weighted scoring
- ~3 min
Define workload requirements
Set your minimum compute constraints and optional architecture filters.
Who This Tool Is For
Platform engineers, cloud architects, and FinOps teams deciding if Spot can safely lower EC2 cost.
Why We Built This Tool
Spot discounts are real, but blind cheapest-instance picks often increase interruption risk. This tool ranks options using weighted tradeoffs so teams can pick confidently.
What Problem It Solves
- Cheapest is not always best. Balance cost with interruption and stability.
- Risk-fit matching. Align instance choice with workload interruption tolerance.
- Architecture transition. Identify Graviton-ready upgrades alongside x86 options.
Pair this with our cloud cost optimization service for rollout playbooks and guardrails.
Frequently Asked Questions
How is the Spot price estimated?
We use On-Demand us-east-1 list pricing and apply directional discount multipliers by interruption band. This is for planning, not a live quote.
Is interruption rate data real-time?
No. Bands are modeled from AWS Spot Advisor-style frequency buckets. Always verify current market behavior before production commitments.
Can I use this for stateful workloads?
Yes, with strict filtering and lower interruption tolerance. For critical stateful services, combine Spot with On-Demand fallback capacity.
Why include stability separately from interruption?
Interruption captures reclaim frequency. Stability approximates price volatility by family, so you can avoid unstable cost profiles.
Do these recommendations include EBS and data transfer?
No, ranking is compute-only. Pair this with our IOPS and network pricing calculators for full cost modeling.
Pricing as of when?
On-Demand references are modeled from June 2026 baseline data. Refresh estimates periodically as AWS rates and Spot markets evolve.