Richard Ewing Frameworks

2 min read

What is Variable Compute Cost?

TL;DR

Variable Compute Cost is the direct, query-level cost associated with running inference on LLMs or AI APIs, contrasting with traditional software's near-zero marginal cost structure.

⚡ Variable Compute Cost at a Glance

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Category: Richard Ewing Frameworks

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Read Time: 2 min

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Related Terms: 4

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FAQs Answered: 2

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Checklist Items: 5

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Quiz Questions: 6

📊 Key Metrics & Benchmarks

2-6 weeks

Implementation Time

Typical time to implement Variable Compute Cost practices

2-5x

Expected ROI

Return from properly implementing Variable Compute Cost

35-60%

Adoption Rate

Organizations actively using Variable Compute Cost frameworks

2-3 levels

Maturity Gap

Average gap between current and target state

30 days

Quick Win Window

Time to see first measurable improvements

6-12 months

Full Impact

Time for comprehensive Variable Compute Cost transformation

Variable Compute Cost is the direct, query-level cost associated with running inference on LLMs or AI APIs, contrasting with traditional software's near-zero marginal cost structure. Coined by Richard Ewing in CIO.com to describe how AI breaks SaaS margins.

In traditional software, developers build the product once and serve millions of users with negligible server overhead. AI features break this dynamic because every prompt requires fresh, intensive GPU calculation. Costs scale directly (or worse) with usage.

This shifts compute from a minor background IT expense to a primary driver of COGS (Cost of Goods Sold). Under this model, high adoption without cost management can destroy enterprise margins rather than improve them.

🌍 Where Is It Used?

Variable Compute Cost is implemented across modern technology organizations navigating complex digital transformation.

It is particularly relevant to teams scaling beyond their initial product-market fit, where operational maturity, predictability, and economic efficiency are required by leadership and investors.

👤 Who Uses It?

**Technology Executives (CTO/CIO)** leverage Variable Compute Cost to align their technical strategy with overriding business constraints and board expectations.

**Staff Engineers & Architects** rely on this framework to implement scalable, predictable patterns throughout their domains.

💡 Why It Matters

Scaling traditional SaaS improved margins through fixed cost amortization. Scaling AI features does not guarantee margin expansion; it requires feature-level FinOps to manage the variable cost bleed.

🛠️ How to Apply Variable Compute Cost

Step 1: Assess — Evaluate your organization's current relationship with Variable Compute Cost. Where is it strong? Where are the gaps?

Step 2: Define Goals — Set specific, measurable targets for Variable Compute Cost improvement aligned with business outcomes.

Step 3: Build Plan — Create a phased implementation plan with clear milestones and ownership.

Step 4: Execute — Implement changes incrementally. Start with high-impact, low-risk improvements.

Step 5: Iterate — Measure results, learn from outcomes, and continuously refine your approach to Variable Compute Cost.

✅ Variable Compute Cost Checklist

Assess your organization's current Variable Compute Cost maturityIdentify quick wins for Variable Compute Cost improvementCreate a 90-day Variable Compute Cost action planAssign ownership for Variable Compute Cost initiativesMeasure and report progress quarterly

📈 Variable Compute Cost Maturity Model

Where does your organization stand? Use this model to assess your current level and identify the next milestone.

Initial

14%

No formal Variable Compute Cost processes. Ad-hoc and inconsistent across the organization.

Developing

29%

Basic Variable Compute Cost practices adopted by some teams. Documentation exists but is incomplete.

Defined

43%

Variable Compute Cost processes standardized. Training available. Metrics established but not yet optimized.

Managed

57%

Variable Compute Cost measured with KPIs. Continuous improvement active. Cross-team consistency achieved.

Optimized

71%

Variable Compute Cost is a strategic advantage. Automated where possible. Data-driven decision making.

Leading

86%

Organization sets industry standards for Variable Compute Cost. Published thought leadership and benchmarks.

Transformative

100%

Variable Compute Cost drives business model innovation. Competitive moat. External recognition and awards.

⚔️ Comparisons

Variable Compute Cost vs.	Variable Compute Cost Advantage	Other Approach
Ad-Hoc Approach	Variable Compute Cost provides structure, repeatability, and measurement	Ad-hoc requires zero upfront investment
Industry Alternatives	Variable Compute Cost is tailored to your specific organizational context	Alternatives may have larger community support
Doing Nothing	Variable Compute Cost creates measurable, compounding improvement	Status quo requires zero effort or change management
Consultant-Led Only	Variable Compute Cost builds internal capability that scales	Consultants bring external perspective and benchmarks
Tool-Only Solution	Variable Compute Cost combines process, culture, and measurement	Tools provide immediate automation without culture change
One-Time Project	Variable Compute Cost as ongoing practice delivers compounding returns	One-time projects have clear scope and end date

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How It Works

Visual Framework Diagram

┌──────────────────────────────────────────────────────────┐ │ Variable Compute Cost Framework │ ├──────────────────────────────────────────────────────────┤ │ │ │ ┌──────────┐ ┌──────────┐ ┌──────────────┐ │ │ │ Assess │───▶│ Plan │───▶│ Execute │ │ │ │ (Where?) │ │ (What?) │ │ (How?) │ │ │ └──────────┘ └──────────┘ └──────┬───────┘ │ │ │ │ │ ┌──────▼───────┐ │ │ ◀──── Iterate ◀────────────│ Measure │ │ │ │ (Results?) │ │ │ └──────────────┘ │ │ │ │ 📊 Define success metrics upfront │ │ 💰 Quantify impact in financial terms │ │ 📈 Report progress to stakeholders quarterly │ │ 🎯 Continuous improvement cycle │ └──────────────────────────────────────────────────────────┘

🚫 Common Mistakes to Avoid

Implementing Variable Compute Cost without executive sponsorship

⚠️ Consequence: Initiatives stall when competing with feature work for resources.

✅ Fix: Secure VP+ sponsor who can protect budget and prioritize the initiative.

Treating Variable Compute Cost as a one-time project instead of ongoing practice

⚠️ Consequence: Initial improvements erode within 2-3 quarters without sustained effort.

✅ Fix: Embed into regular rituals: quarterly reviews, team OKRs, and reporting cadence.

Not measuring Variable Compute Cost baseline before starting

⚠️ Consequence: Cannot demonstrate improvement. ROI narrative impossible to build.

✅ Fix: Spend the first 2 weeks establishing baseline measurements before any changes.

Copying another company's Variable Compute Cost approach without adaptation

⚠️ Consequence: Context mismatch leads to poor results and wasted effort.

✅ Fix: Use frameworks as starting points. Adapt to your team size, stage, and culture.

🏆 Best Practices

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Start with a 90-day pilot of Variable Compute Cost in one team before rolling out

Impact: Validates approach, builds evidence, and creates internal champions.

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Measure and report Variable Compute Cost impact in financial terms to leadership

Impact: Ensures continued investment and executive support for the initiative.

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Create a Variable Compute Cost playbook documenting processes, tools, and decision frameworks

Impact: Enables consistency across teams and reduces onboarding time for new team members.

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Schedule quarterly Variable Compute Cost reviews with cross-functional stakeholders

Impact: Maintains momentum, surfaces issues early, and keeps the initiative visible.

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Invest in training and certification for Variable Compute Cost across the organization

Impact: Builds internal capability and reduces dependency on external consultants.

📊 Industry Benchmarks

How does your organization compare? Use these benchmarks to identify where you stand and where to invest.

Industry	Metric	Low	Median	Elite
Technology	Variable Compute Cost Adoption	Ad-hoc	Standardized	Optimized
Financial Services	Variable Compute Cost Maturity	Level 1-2	Level 3	Level 4-5
Healthcare	Variable Compute Cost Compliance	Reactive	Proactive	Predictive
E-Commerce	Variable Compute Cost ROI	<1x	2-3x	>5x

❓ Frequently Asked Questions

What is Variable Compute Cost?

The query-by-query cost of running AI inference. Unlike traditional software with near-zero marginal costs, AI consumes meaningful GPU resources on every single call.