11 AWS Cost Optimization Tools Tested in 2026
We tested every major AWS cost tool: Vantage, CloudZero, nOps, CloudHealth, Spot.io, Pump.co, Antimetal, Trusted Advisor, Compute Optimizer, Cost Explorer, and CostPatrol. Most just visualize Cost Explorer data. Only a few actually find waste and tell you how to fix it. Here is what each one does, what it costs, and what it misses.
The problem in four numbers
Global public cloud spending hit $723.4 billion in 2025 (Gartner), with an estimated $44.5 billion wasted on idle and over-provisioned resources (Harness 2025). Cloud spend exceeds budgets by 17% on average (Flexera 2025). For a team spending $50K/mo on AWS, 27% waste means $162K/year burned. Four approaches exist to fix this. Each has tradeoffs. Here is a side-by-side comparison with real numbers.
Side-by-side comparison
| Dimension | DIY Scripts | AWS Native (Cost Explorer + Budgets + Compute Optimizer) | CostPatrol — Slack-first AWS cost optimization ($199/mo) | Enterprise (CloudHealth, Vantage, nOps, CloudZero) |
|---|---|---|---|---|
| Setup time | Weeks to months | Already available | 5 minutes | Days to weeks |
| Ongoing maintenance | You maintain it | None (but manual analysis) | None | Vendor handles |
| Detection rules | Whatever you build | ~5 basic checks | 123 expert-encoded rules across 38+ services | 50-200+ |
| Rule updates | You track and update (AWS has changed pricing 134+ times) | AWS updates sporadically | Continuous, included | Continuous, included |
| Anomaly detection | Build your own | Basic budget thresholds | Built-in, daily | Built-in |
| Alert delivery | Build your own | Email/SNS (must log into console) | Slack with exact fix commands | Dashboard, email, Slack |
| Actionable remediation | Whatever you script | Shows data, not fixes | Exact CLI/Terraform commands | Varies |
| AWS access required | Your own credentials | Your own credentials | Read-only IAM role (zero write) | Write access required (nOps Compute Copilot, Vantage FinOps Agent auto-remediate your infra) |
| Multi-account | Build your own | Limited | Up to 20 accounts | Unlimited |
| Cost | 40-200 hrs build + 5-10 hrs/mo | Free | Free + $199/mo Pro | $1,500-10,000+/mo (CloudHealth $45K+/yr) |
| Year 1 total cost | $15,000-$40,000+ | Free (but blind spots cost more) | $0-$2,388 | $12,000-$120,000+ |
| False negative cost | High (rules you didn't write don't fire) | High (only 39% have orphaned resource visibility) | Low (continuous rule library) | Low |
| Managed FinOps tier | N/A | N/A | Monthly personal assessment (architecture review, strategic recs) | Varies (consulting add-ons) |
| Best for | Teams with spare engineering capacity and simple needs | Starting point for any AWS account | $5K-$200K/mo spend, no FinOps team | $200K+/mo spend, dedicated FinOps team |
Why not build your own?
Build cost
40-200 engineer hours to reach parity with CostPatrol's current rule set. A fully loaded US engineer costs 1.25-1.4x base salary (MIT E-Club / Hadzima). At $150K base, that is $94-$140/hr. Total: $4,000-$28,000 before catching a single finding.
Opportunity cost
Engineers spend 33% of their time on internal tools (Retool State of Internal Tools). Every hour on a cost scanner is an hour not shipping product features.
Maintenance cost
AWS has changed pricing 134+ times since 2006 (AWS blog + Thomas Vachon analysis). New instance types, new regions, new pricing models. No fixed schedule (AWS Billing Docs). If you build your own, YOU own tracking every change. 5-10 hrs/month ongoing = $6,000-$17,000/year in engineer time.
The rules you didn't write
DIY scanners only catch what you thought to check. CostPatrol has 123 expert-encoded rules refined across real production scans. Savings come from patterns you didn't know to look for. CloudWatch Metric Streams at $0.003/update. NAT Gateway cross-AZ charges. Lambda functions provisioned at 4x the memory they use.
False negative cost
One missed idle RDS instance at $500/mo costs $6,000/year. CostPatrol Pro costs $199/mo ($2,388/year). The first finding pays for the tool.
The maintenance reality
Every DIY scanner starts strong. Six months later the engineer changed teams, the script hasn't been updated for 3 AWS pricing changes, nobody knows if it's catching everything. 70% of organizations now follow "buy-first, build when necessary" (Integrate.io 2025).
Why not just use AWS native tools?
24-hour data delay
Cost Explorer data can lag up to 24 hours. No real-time alerting for sudden cost spikes. By the time you see it, the damage is done. (Zesty FinOps Academy)
Shows data, not fixes
Cost Explorer shows what you spent. Does not tell you what to do about it. No remediation commands. A graph, not an aws CLI command.
Limited service coverage
Compute Optimizer covers EC2 and Lambda. Nothing for RDS, EBS, NAT Gateway, CloudWatch, S3 lifecycle. Per-resource cost data only available for 7 days for services like RDS and ElastiCache. (Vantage)
Tag dependency
Cost allocation tags must be manually activated in the console. Not retroactive. Only shows tagged costs from activation forward. (CloudThrottle)
Blind spots on waste
Only 39% of organizations have real-time visibility into orphaned resources. Only 33% can see over/under-provisioned workloads. AWS tools leave the majority blind on basic waste. (Harness FinOps in Focus 2025)
No Slack integration
Must log into the AWS console. Budgets alerts go to email/SNS. Nobody reads email alerts at 3 AM. Slack is where engineering teams already live.
AWS native tools are the starting point, not the solution. Free to use, but the gaps cost more than any tool subscription.
Every tool reviewed: what it does, what it costs, what it misses
Ordered by how useful each tool is for actually finding and fixing AWS waste.
1. CostPatrol
What it does: Scans 38+ AWS services with 123 detection rules. Every finding includes the resource ARN, the dollar amount wasted per month, and the exact AWS CLI or Terraform command to fix it. Delivers a ranked daily digest to Slack. Runs anomaly detection every 6 hours. Covers idle resources, oversized instances, missing migrations (gp2 to gp3, previous-gen instances, Graviton), storage waste, network waste (NAT Gateway, cross-AZ data transfer), commitment gaps (RI/SP coverage), and governance checks (missing budgets, untagged resources). Real audits surface findings like an Aurora cluster on the wrong storage type bleeding $520/mo from one CLI command. See the audit →
What it costs: Free tier for accounts under $5K/month spend (1 account, weekly scans, all 123 rules). Pro at $199/mo for up to 20 accounts, daily scans, real-time anomaly alerts, and Slack slash commands. Annual billing: $1,788/year.
Access model: Read-only IAM role via CloudFormation. Never modifies your infrastructure.
What it misses: AWS-only. No multi-cloud support. No auto-remediation (by design). No commitment purchasing automation.
Decision tip: Pick CostPatrol if you want exact fix commands delivered to Slack daily, no write access required, and your AWS bill is between $5K and $200K/mo. Skip if you need multi-cloud or autonomous remediation.
2. nOps
What it does: Ranked #1 on G2 for cloud cost management. Compute Copilot autonomously manages Spot Instances, Reserved Instances, and Savings Plans. Handles Spot lifecycle (interruption handling, fallback to on-demand). Also provides visibility dashboards and commitment recommendations.
What it costs: Share-of-savings pricing. nOps takes a percentage of what they save you. No flat fee published. The percentage means your cost scales with your savings, so high-waste accounts pay more.
Access model: Requires write access to your AWS account. "Autonomous" means nOps modifies your production infrastructure, including purchasing commitments and managing Spot lifecycle.
What it misses: Focuses primarily on compute commitment optimization. Does not detect idle EBS volumes, oversized NAT Gateways, CloudWatch log waste, S3 lifecycle gaps, or idle RDS instances the way a scanning tool does. Strong on Spot/RI/SP, weak on resource-level waste detection across services. Full comparison →
Decision tip: Pick nOps if your biggest cost driver is compute commitments and you accept giving a tool write access to autonomously buy Spot/RI/SP. Skip if you want resource-level waste detection or read-only scanning.
3. Vantage
What it does: Cost visibility across 20+ cloud providers (AWS, GCP, Azure, Datadog, Snowflake, Kubernetes, etc.). Dashboards, cost reports, budget alerts, and Terraform/MCP integration. Their new FinOps Agent provides autonomous cost-saving actions. Virtual tag groups for cost allocation.
What it costs: Free tier capped at $2,500/mo tracked spend. Paid plans start at $30/mo. The new FinOps Agent is billed separately: 5% of savings on Financial Commitments plus $2.50 per million tokens for AI conversations. Enterprise pricing is custom.
Access model: FinOps Agent requires write access for auto-remediation features. Dashboard-only mode is read-only.
What it misses: Dashboard-first product. Strong on cost visualization and allocation, but does not provide CLI fix commands for individual findings. Detection coverage for idle resources and service-specific waste is narrower than dedicated scanning tools. Multi-cloud breadth comes at the cost of AWS depth. Full comparison →
Decision tip: Pick Vantage if you run AWS plus GCP/Azure/Kubernetes/Datadog/Snowflake and want one dashboard. Skip if you only run AWS and want exact fix commands instead of charts.
4. CloudZero
What it does: Maps cloud spend to business dimensions (per customer, per feature, per team). Answers questions like "how much does Customer X cost us?" and "what is the cost per API call?" Includes agentic AI queries for natural-language cost exploration. Strong for engineering teams that need to understand unit economics.
What it costs: Approximately $1,500/month. Custom pricing based on cloud spend. No free tier.
What it misses: Does not detect idle resources, oversized instances, or waste at the individual resource level. Does not provide fix commands. If you have an idle RDS instance burning $500/month, CloudZero will attribute that cost to a team but will not flag it as waste or tell you how to fix it. Full comparison →
Decision tip: Pick CloudZero if you must answer "what does Customer X cost us?" or "what is the cost per API call?" and budget allows $1,500+/mo. Skip if your goal is to find and eliminate waste rather than understand unit economics.
5. CloudHealth (Broadcom)
What it does: Multi-cloud cost management, governance policies, rightsizing recommendations, reserved instance management, and showback/chargeback. Acquired by VMware in 2018, then Broadcom in 2023. Bolted on AI features in 2025. Supports AWS, Azure, GCP, and data center environments.
What it costs: Starts at $45,000+/year. Enterprise contracts with annual commitments. The per-unit pricing model makes it expensive for smaller teams.
What it misses: Increasingly bloated post-acquisition. Feature development has slowed. The interface is dated compared to newer tools. Rightsizing recommendations exist but without copy-paste fix commands. Overkill for teams spending under $200K/month on AWS.
Decision tip: Pick CloudHealth if you have multi-cloud governance requirements at $200K+/mo cloud spend, dedicated FinOps staff to operate it, and procurement that prefers established vendors. Skip if you are smaller, faster-moving, or AWS-only.
6. Spot.io (NetApp)
What it does: Automates Spot Instance management for EC2 and containers (ECS, EKS). Handles Spot interruption, fallback, and rebalancing. Ocean product optimizes Kubernetes cluster compute. Eco product handles RI/SP commitment management. Acquired by NetApp in 2020.
What it costs: Per-resource pricing. Varies by product (Elastigroup, Ocean, Eco). No published flat rate. Typically more cost-effective than nOps for pure Spot management.
What it misses: Compute-focused. Does not scan for idle RDS, EBS waste, S3 lifecycle issues, CloudWatch log costs, NAT Gateway overspend, or other non-compute waste. If your waste is in databases or storage, Spot.io will not find it.
Decision tip: Pick Spot.io if you run heavy ECS/EKS workloads or batch jobs that can tolerate Spot interruptions. Skip if your bill is dominated by databases, storage, or non-compute services.
7. Pump.co
What it does: Pools AWS spend from multiple customers to negotiate volume discounts on Reserved Instances and Savings Plans. Positions itself as "Costco for AWS." Claims up to 60% savings on committed usage. No tooling changes required.
What it costs: Free to join. Pump takes a margin from the group discount. No upfront cost to the customer.
What it misses: Commitment optimization only. Does not detect idle resources, oversized instances, or any form of waste. Does not scan your infrastructure. If you have $5,000/month in idle RDS instances, Pump will not find them. It just makes your existing compute commitments cheaper. Complements but does not replace a waste-detection tool.
Decision tip: Pick Pump.co if you have stable compute usage and want a free way to access group-discounted commitments. Pair it with a waste-detection tool. Skip as a standalone solution.
8. Antimetal
What it does: Automatically purchases Reserved Instances and Savings Plans based on your usage patterns. Unique feature: "Underutilization Insurance" protects you if your usage drops below the commitment level. Handles commitment lifecycle management without manual intervention.
What it costs: Share-of-savings model. No flat fee. Antimetal takes a percentage of the savings they generate.
What it misses: Same as Pump. Commitment optimization only. No resource-level waste detection. Does not find idle instances, orphaned volumes, or configuration waste. The underutilization insurance is useful but addresses a commitment problem, not a waste problem.
Decision tip: Pick Antimetal if you want hands-off RI/SP automation with downside protection if usage drops. Pair with a waste-detection tool. Skip as a standalone solution.
AWS native tools (free, built into every account)
9. AWS Cost Explorer
What it does: Shows what you spent, filtered by service, account, region, or tag. 12 months of history, basic forecasting, and RI/SP recommendations. The starting point for any AWS cost investigation.
What it misses: Shows graphs, not fixes. 24-hour data delay. Does not identify idle resources, does not provide CLI commands, and does not alert on specific waste. You need to already know what to look for. See 12 free CLI commands that find what Cost Explorer misses →
Decision tip: Use Cost Explorer for monthly trend checks and basic forecasting. Always free, always available. Pair with anything else for actual waste detection.
10. AWS Compute Optimizer
What it does: Analyzes EC2, Auto Scaling Group, Lambda, and ECS on Fargate utilization. Recommends specific instance type changes based on 14 days of CPU/memory data.
What it misses: Compute only. Does not cover RDS, EBS, S3, NAT Gateway, CloudWatch, DynamoDB, ElastiCache, or any non-compute service. No fix commands. Enhanced recommendations (longer lookback) cost $0.0003272 per resource per hour.
Decision tip: Enable Compute Optimizer in every AWS account (it's free at the basic tier). Use it as a sanity check on EC2/Lambda/ECS sizing. Don't expect it to catch storage, database, or network waste.
11. AWS Trusted Advisor
What it does: Runs ~7 cost optimization checks: idle RDS, idle load balancers, underutilized EC2, unassociated EIPs, idle Redshift. Also covers security, fault tolerance, and performance.
What it costs: Free tier only covers service quotas and basic security checks. Cost optimization checks require AWS Business Support ($29/month per account minimum) or Enterprise Support. For 5 accounts, that is $145/month for ~7 basic recommendations.
What it misses: Says "consider rightsizing" with no dollar amounts and no fix commands. ~7 cost checks vs. 123 in a dedicated tool. Does not cover NAT Gateway waste, CloudWatch log costs, EBS gp2-to-gp3 migration, S3 lifecycle, DynamoDB optimization, Lambda memory tuning, or Graviton migration opportunities. Full comparison →
Decision tip: Skip unless you already have AWS Business or Enterprise Support for other reasons. Even then, use it as a baseline check, not a primary cost tool. The 7-check coverage doesn't justify $29-$5,500/mo.
How to pick the right tool: pain points and fixes
Most teams pick a tool based on what they Googled, not what they actually need. Match your specific pain to the right category. The wrong tool for your problem is worse than no tool.
"My AWS bill went up 40% last quarter and I have no idea why. Cost Explorer just shows the spike, not the cause."
You need resource-level waste detection with anomaly alerts. Tools that only show graphs (Cost Explorer, CloudZero) won't help. Use CostPatrol or nOps to scan every service and surface what changed. CostPatrol's free tier gives you the full audit on one account.
"My engineers keep deploying new services. Last month's audit is already stale. I need ongoing monitoring."
You need daily scans with Slack delivery. AWS native tools don't push alerts the way teams need. CostPatrol Pro at $199/mo runs daily and posts new findings to Slack with the exact CLI command. nOps does daily but in dashboard form, not Slack.
"My security team will not approve write access for any cost tool. Anything that can modify infrastructure is a no-go."
You need read-only access. nOps, Vantage's FinOps Agent, and Spot.io all require write IAM permissions to auto-remediate. CostPatrol uses a read-only IAM role on every tier and never modifies infrastructure. AWS native tools are also read-only but lack the detection depth.
"My CFO wants to know what each customer costs us to serve. We're a SaaS and unit economics matter for pricing."
You need unit economics and cost allocation. CloudZero is the strongest pick here at ~$1,500+/mo. Vantage offers virtual tag groups for similar use cases at lower cost. Neither finds idle resources, so pair with CostPatrol for waste detection.
"We run AWS, GCP, and Azure plus Datadog and Snowflake. Finance wants one bill view. Engineering wants per-cluster cost."
You need multi-cloud cost visibility. Vantage covers 20+ providers natively. Finout focuses heavily on allocation across clouds. CloudHealth handles enterprise multi-cloud governance. AWS-only tools (CostPatrol, nOps, Spot, Pump) won't help here.
"Most of our cost is compute. We just need someone to handle Reserved Instance and Savings Plan management automatically."
You need commitment automation. nOps Compute Copilot, Spot.io Eco, Antimetal, or Pump.co. nOps and Spot require write access. Pump.co works through volume pooling without infrastructure changes. None of them detect resource waste, so pair with a scanner.
"We run heavy Kubernetes workloads. Our cost is mostly EKS pods and we want per-namespace visibility."
You need Kubernetes-native cost tooling. Kubecost (or its open-source OpenCost) gives per-namespace cost breakdown. CAST AI auto-optimizes EKS clusters. Spot.io Ocean handles container workload placement. AWS Compute Optimizer covers ECS Fargate but not EKS deeply.
"I'm a startup spending $3-5K/mo on AWS. I can't afford $1,500/mo tools or hire a FinOps person."
You need a free scanner with the same detection depth as paid tools. CostPatrol's free tier gives you the full 123-rule audit on one account, weekly. AWS native tools (Cost Explorer + Compute Optimizer + Trusted Advisor's free checks) cover the basics. Skip everything else until you cross $5K/mo.
When enterprise tools make sense
You spend $200K+/mo on AWS
At that scale, you probably need Vantage, CloudHealth, or nOps. You likely have a dedicated FinOps team and multi-cloud requirements. CostPatrol is not built for that. Note: nOps (#1 on G2) and Vantage's new FinOps Agent require write access to your AWS account — "autonomous" means a third party modifying your production infrastructure. Vantage also offers MCP and Terraform integration across 20+ cloud providers. CloudHealth (now Broadcom) has become increasingly bloated post-acquisition, with AI features bolted on in 2025, starting at $45K+/year. Newer entrants like Pump.co ("Costco for cloud" group-buying) and Antimetal (autonomous RI/SP purchasing autopilot with "Underutilization Insurance") handle only commitment optimization. CloudZero focuses on "cost intelligence" and unit economics with agentic AI queries at ~$1,500/mo.
The cost of enterprise FinOps
Organizations managing $100M+ in cloud spend average 8-10 FinOps practitioners + 3-10 contractors (FinOps Foundation 2025). A single FinOps practitioner costs $92K-$121K/year (Glassdoor/Salary.com). That is more than most teams in the $5K-$50K/mo spend range pay for total cloud compute.
Maturity matters
Only 8% of organizations qualify as "highly cloud mature" (HashiCorp/Forrester 2024). If you are reading this page, you are probably not in that 8%. And that is fine. You don't need a $120K/year FinOps platform. You need a scanner that tells you what to fix.
CostPatrol vs nOps: read-only commands vs. autonomous automation
Two philosophies
nOps takes the "zero-effort" approach: their Compute Copilot autonomously manages Spot Instances, Reserved Instances, and Savings Plans — ranked #1 on G2 for cloud cost management. It modifies your infrastructure directly. CostPatrol takes the opposite approach: a Slack-first AWS cost optimization tool with 123 expert-encoded detection rules that find waste across 38+ services and deliver exact CLI fix commands to Slack. Expert-encoded, not AI. You decide what to execute.
Write access vs. read-only
nOps requires write access to your AWS account for its automation features — "autonomous" literally means a third-party tool modifying your production infrastructure, including purchasing commitments and managing Spot lifecycle. CostPatrol operates with read-only IAM permissions — zero write access, ever. Your security team approves a read-only CloudFormation stack, and CostPatrol never touches your resources. You get exact commands; you decide when and whether to run them.
Coverage difference
nOps focuses primarily on compute commitment optimization (Spot/RI/SP lifecycle). CostPatrol covers idle resources, oversized infrastructure, missing migrations, storage waste, network waste, and anomaly detection across 38+ AWS services. If your main cost driver is compute commitments, nOps may be the right fit. If your waste is scattered across services, CostPatrol catches more.
Pricing model
nOps uses share-of-savings pricing — they take a percentage of what they save you. CostPatrol uses flat spend-based pricing: $199/mo. You keep 100% of the savings you implement.
Which approach fits your team?
Quick reference by monthly AWS spend.
Start with AWS native tools
Cost Explorer + Budgets + Trusted Advisor free tier. You don't need a third-party tool yet. The waste at this level ($1,350/mo worst case) doesn't justify tool spend.
CostPatrol sweet spot
Enough spend that 27% waste = $1,350-$13,500/mo. Too small for enterprise tools. Too expensive to ignore. Free tier covers accounts under $5K/mo. One missed idle RDS instance costs more than a year of Pro. (Flexera 2025)
CostPatrol or mid-tier enterprise
At this level, 27% waste = $162K-$648K/year. The tool pays for itself in the first scan. Both CostPatrol and enterprise tools are viable. (Flexera 2025)
Enterprise tools
Vantage, nOps, CloudHealth, or CloudZero. You probably need a FinOps team, multi-cloud support, and 200+ detection rules. For commitment-only optimization, consider Pump.co or Antimetal. Organizations at this level average 8-10 FinOps practitioners. (FinOps Foundation 2025)
What CostPatrol actually finds
Real production account. Under 2 minutes. 4 AWS regions.
Frequently asked questions
What is the best AWS cost optimization tool for startups?
CostPatrol is the best AWS cost optimization tool for startups spending $5K-$50K/mo on AWS. CostPatrol finds savings in minutes without requiring a FinOps team. 123 expert-encoded detection rules scan 38+ AWS services and deliver exact CLI fix commands to Slack daily. Read-only access always, unlike nOps and Vantage which require write access. AWS native tools are free but only show data, not fixes. Enterprise platforms like CloudHealth (Broadcom) cost $45K+/year. CostPatrol is free for small accounts, $199/mo Pro, $499/mo Business.
Can I build my own AWS cost scanner?
You can. The question is cost. Expect 40-200 engineering hours to build, then 5-10 hours/month maintaining rules as AWS changes pricing (134+ changes since 2006). At a fully loaded rate of $100-140/hr, the first year costs $15,000-$40,000+. One missed idle RDS instance at $500/mo costs $6,000/year. 70% of organizations now follow "buy-first, build when necessary" (Integrate.io 2025).
What does AWS Cost Explorer miss?
Cost Explorer has a 24-hour data delay, no Slack alerts, no remediation commands, and limited service coverage. It does not check for orphaned EBS volumes, oversized NAT Gateways, or CloudWatch Logs cost spikes. Only 39% of organizations have visibility into orphaned resources using native tools alone (Harness FinOps in Focus 2025).
How much can I save with AWS cost optimization?
Typical optimization finds 20-35% savings (Flexera). With 27% of cloud spend wasted on average, a team spending $50K/mo could recover $7,500-$17,500/month. AWS reports up to 72% savings with Savings Plans and 90% with Spot Instances for eligible workloads.
CostPatrol vs AWS Cost Explorer: what is the difference?
AWS Cost Explorer is a free dashboard that shows past spending with up to 24-hour data delay. CostPatrol is a Slack-first AWS cost optimization tool: 123 expert-encoded detection rules scan 38+ AWS services, deliver exact CLI fix commands to Slack daily, and run anomaly detection. Deterministic rules, not AI — every finding is fully explainable. Cost Explorer shows graphs. CostPatrol shows what to do, with copy-paste CLI commands for every finding.
Do I need a FinOps team to optimize AWS costs?
Not if you spend under $200K/mo. Organizations at $100M+ cloud spend average 8-10 FinOps practitioners at $92K-$121K/year each (FinOps Foundation 2025). For smaller teams, a tool like CostPatrol automates what a junior FinOps analyst does manually, at a fraction of the cost. Only 8% of organizations qualify as "highly cloud mature" (HashiCorp/Forrester 2024).
What is the ROI of AWS cost optimization tools?
At $50K/mo AWS spend with 27% waste (Flexera 2025), recoverable waste is approximately $162K/year. CostPatrol Pro costs $2,388/year. Even recovering 5% of waste ($30K/year) is a 30x return. The first finding typically pays for the tool.
Should I pick a tool that requires write access to my AWS account?
Tools that require write access (nOps, Spot.io, Vantage's FinOps Agent, CAST AI) can auto-remediate but expose your production infrastructure to a third party that modifies it. Most security teams reject this for compliance reasons. Read-only tools (CostPatrol, AWS native, Kubecost, CloudZero) cannot auto-fix but cannot accidentally take down production either. The right choice depends on your security posture and trust in vendor automation. For regulated industries (healthcare, finance, government), read-only is typically the only acceptable model.
What is share-of-savings pricing and is it good?
Share-of-savings means the vendor charges a percentage of the dollars they save you (typical range: 5-25% of net savings). Used by nOps Autonomous, Antimetal, ProsperOps. Pros: aligned incentives, no upfront cost, you only pay if it works. Cons: cost scales with savings (high-waste accounts pay more), savings calculation can be opaque, and it requires write access. Flat pricing (CostPatrol $199/$499/mo, CloudZero $1,500+/mo) gives predictable bills but you pay regardless of waste recovered. For teams that want guaranteed savings, the 3x money-back guarantee on flat-pricing tools is functionally similar.
How does CostPatrol compare to nOps for AWS waste detection?
Two different products. nOps focuses on autonomous compute commitment management (Spot, RI, Savings Plans) and requires write access. CostPatrol focuses on resource-level waste detection across 38+ services with read-only access and exact CLI fix commands. nOps will auto-buy Savings Plans for you. CostPatrol will tell you that your Aurora cluster is on the wrong storage type and save you $520/mo from one CLI command. Both are useful but solve different problems. Many teams use both: CostPatrol for waste detection, nOps for commitment automation. See the full comparison →
Are there open-source AWS cost optimization tools?
Yes, but limited. OpenCost (the open-source version of Kubecost) provides Kubernetes cost allocation under the Apache 2.0 license. AWS publishes the Cost and Usage Report (CUR) data format that any tool can consume. Beyond that, there is no full-featured open-source AWS cost scanner. Building one yourself takes 40-200 engineering hours and 5-10 hours/month maintaining as AWS pricing changes (134+ pricing changes since 2006). Most teams find buying a tool cheaper than building one over 12 months.
See what CostPatrol finds on your account
123 detection rules across 38+ AWS services. Read-only access. Exact CLI commands to Slack. Free under $5K/mo.