Know which customers, workflows, and AI features
are eroding your margin.

Attribute every AI cost to the customer or workflow that caused it, enforce budgets before overspend, and see where usage is compressing margin.

Start with a base URL swap. Add business metadata for customer, agent, and workflow attribution. No SDK required.

Get an immediate score across attribution, enforcement, containment, margin visibility, and reconciliation.

Your stack
Your applications
Spendline
Attribute · Govern · Optimize · Reconcile
Model providers
OpenAI · Anthropic · Gemini · xAI · Mistral
Attribute AI cost

Map model usage to the customer, agent, workflow, feature, team, or cost centre that caused it.

Control spend before it happens

Set budgets and policies by organisation, team, agent, or customer. Alert, require approval, or block requests when limits are reached.

Understand customer economics

Compare customer revenue with attributable AI cost and identify where usage is compressing gross margin.

AI costs are created inside product flows.
Finance only sees the total after the fact.

Every prompt, retry, and tool call is a spend decision made by code in production. For AI features, that happens continuously across your user base. In agentic workflows, thousands of those decisions happen overnight with no human in the loop. By the time finance sees the number, the spend has already happened.

Provider dashboards show totals. They do not show which customer, team, or feature caused the cost.

Which customers are actually profitable after AI costs?

Most teams cannot answer this.

AI spend is becoming a COGS line. Most companies are still treating it like infrastructure.

How controlled is your AI spend?

The Spendline assessment evaluates six areas. It produces an immediate score and identifies the controls that are missing.

  1. 01AttributionPer-customer and per-workflow cost attribution
  2. 02Central controlAll AI traffic through one managed control point
  3. 03EnforcementRequest-path budgets with override approvals
  4. 04ContainmentRunaway detection with same-day containment
  5. 05Margin and allocationPer-customer margin and cost-centre allocation
  6. 06ReconciliationMonth close and invoice reconciliation

Financial attribution at the moment of execution.

With business metadata attached, every request is mapped to the customer, workflow, or cost centre that caused it.

Attribution
Real-time attribution
Attribute every model request to the customer, agent, workflow, feature, team, or cost centre that caused it.
Control
Budget enforcement and approvals
Set spend limits by organisation, team, agent, or customer. Choose whether a limit triggers an alert, requires approval, or blocks the request. Enforce model restrictions and token limits directly in the request path.
Finance
Customer economics
Compare customer revenue with attributable AI cost to identify where usage is compressing gross margin.
Finance operations and optimization
Finance
Reconciliation and month close
Review allocation completeness, reconcile usage against provider invoices, record adjustments, and preserve an audit history of the close.
Optimization
Optimization and rerouting
Apply controlled model substitutions and rerouting rules, then measure the resulting cost difference against actual traffic.
Detection
Anomaly and runaway-spend detection
Identify unusual spend patterns and workflows whose cost is accelerating beyond expected levels.

Attribution runs in the request, not in the report.

Every request becomes a financial event.

  1. Request enters Spendline
  2. Business context attaches
  3. Attribution and policy checks run
  4. Request routes to provider
  5. Financial record is created
  6. Shared visibility updates
01
Request enters Spendline
02
Business context attaches
03
Attribution and policy checks run
04
Request routes to provider
05
Financial record is created
06
Shared visibility updates

Observability tools show tokens. Spendline shows gross margin per customer.

Observability tools primarily report what already happened. Spendline acts in the request path — attributing each call, enforcing budgets and approvals, and applying policy before the cost is incurred.

The difference is financial accountability: approvals, customer economics, reconciliation, and month close — not just another dashboard of spend after the fact.

Engineering installs it for visibility. Finance adopts it for control. The business uses it to protect margins.

The pattern that led us to build Spendline
During investment diligence, we observed an anonymous company generating approximately $32M in revenue while spending approximately $39M on purchased AI services with no meaningful attribution.

Engineers saw tokens. Finance saw invoices. The board saw the gap too late.

The problem was not simply that AI cost was high. No one could connect it to the customers, teams, or workflows that created it.

Value-linked.
Not seat-based.

AI workloads do not map cleanly to seats. Spendline is priced as a base fee plus a percentage of AI spend under management. If we do not improve your margins by more than we cost, the product should not exist.

Pricing is aligned to AI spend because that is the risk being managed.

Growth
$500/mo
+ 1.0% of AI spend · variable capped at $500/mo
max total $1,000/mo
AI-native startups · $5K–$50K/mo AI spend
  • In-path proxy with attribution
  • Real-time cost dashboard
  • Hierarchical budgets (org, team, agent)
  • Policy engine with budget guardrails and spend alerts
  • Anomaly detection and alerts
  • 60-day free pilot to start
Platform
$1,500/mo
+ 0.75% of AI spend · variable capped at $1,500/mo
max total $3,000/mo
High-growth AI companies · $50K–$200K/mo
  • Everything in Growth
  • Customer margin analytics
  • Cost optimizer with reroute rules
  • AI month close workflow
  • Budget override approval flows
  • Slack, Discord, webhook alerts
Enterprise
From $5,000/mo
+ 0.5% of AI spend · custom annual agreement
Large AI orgs requiring governance and compliance
  • Everything in Platform
  • SSO and identity integration
  • Private deployment architecture
  • Finance-system exports and integrations
  • Custom approval workflows
  • Dedicated implementation support

Enterprise deployment and integrations are available through scoped pilot agreements.

Customers move to Enterprise because they need deployment, compliance, and workflow features, not because spend crossed a threshold. Enterprise is feature-gated, not spend-forced.

Ready when you are

Understand your AI cost structure
from the first request.

Add guardrails once you see the data.

Swap your base URL. No SDK required. Fast time to first visibility. No commitment until you have seen your real AI cost breakdown.

Currently accepting pilot partners across B2B SaaS and enterprise, especially teams where AI spend is becoming a real cost line.