Know which client’s agents eat the margin. Before the retainer invoice goes out.
Audon reads your OpenAI, Anthropic and xAI (Grok) cost data by project, workspace and model, so each client engagement has its own spend line, its own alerts and evidence you can put in front of the client.
Free 30-day audit. Read access only, no card.
Observed spend
$14,935.65
30 of 30 days
Findings
4
1 anomaly to review
Largest project
42.9%
client-atlas
Verified savings
$1,063.42
1 approved experiment
- client-atlas42.9%$6,412.80
- client-birch33.3%$4,980.25
- client-cobalt14.9%$2,226.70
- internal-rnd8.8%$1,315.90
Mapped as one project per client engagement.
One provider bill, many clients. Splitting it fairly is where margin goes.
Per-client attribution
One OpenAI organization, eleven clients, one invoice. Splitting it by hand each month means guesses and awkward conversations.
Give each client or engagement its own project or workspace and Audon breaks spend down by client, model and day. Export the totals to CSV for your billing system.
- Breakdown by project, workspace and model
- Report and data export
Margin on fixed-fee retainers
The fee is fixed; the model bill isn’t. A client whose usage triples halfway through the month quietly eats the margin on that retainer.
Sustained growth flags a client project growing over 20% a week for three weeks. Daily and monthly spend alerts per project tell the account lead in time to talk about scope.
- sustained_growth
- Daily spend alerts
- Monthly spend alerts
Rebilling evidence clients accept
Pass-through AI costs get questioned, and “our records say” is weaker than the provider’s own numbers.
Every amount reconciles to the provider’s cost API and is labelled observed spend, with the record count behind it. Recent days are marked provisional until the provider finalises them.
- Evidence class on every amount
- Report and data export
- Detector versions and snapshot hash
Runaway spend on prototypes and evals
Pitches, prototypes and eval runs use the agency’s own key. Nobody bills them, and nobody notices when one runs all weekend.
The spike detector flags any project, including internal ones, above 2.5× its trailing median; the concentration detector flags one model or project dominating spend.
- spend_spike
- spend_concentration
One month across four engagements. Which client to call, and which to rebill.
- FND-0607Medium
Sustained spend growth on project client-birch
Observed spend$644.20 weekly increaseWeekly spend $802.10 → $975.60 → $1,188.45 → $1,446.30
- FND-0608High
Spend spike on project client-cobalt
Anomalous spend$339.62 above median12–13 Oct at 4.2× and 3.3× the trailing 14-day median · 44 cost records
- FND-0609Info
78.2% of attributed spend is on model claude-sonnet-4
Observed spend$11,694.61 model totalShare of attributed spend over 30 days · 3 models with attribution
- FND-0610Info
No outcome data: cost per successful task is unknown
Observed spendUnavailable cost per success$14,935.65 of spend with no matching outcome telemetry
FND-0607
Sustained spend growth on project client-birch
- Classification
- Observed spend
- Amount
- $644.20 weekly increase
- Detector
- sustained_growth 1.0.0
- Status
- Open
Detected by scheduled audit26 Oct
client-birch weekly spend up from $802.10 to $1,446.30.Note from the account lead26 Oct
Client added two new content feeds in week 2. Outside the retainer scope.Export attached to the scope review26 Oct
CSV of client-birch spend by day and model, 27 Sep – 26 Oct.
Synthetic example: generated for this page, not a customer result. Anomalous and observed amounts are not savings, potential savings are not validated, and nothing becomes a verified saving without an approved experiment.
What changes for each role. Same data, three different questions answered.
Finance
billing_adminToday
Splits one provider invoice across clients by estimate, then defends it.
With Audon
- Spend per client project, reconciled
- CSV exports for rebilling
- Provisional days marked until final
Account lead
read_onlyToday
Finds out a retainer lost money at the monthly review.
With Audon
- Growth on their client flagged within weeks
- Alerts before the retainer budget is gone
- Evidence to bring to a scope conversation
Delivery and engineering
analystToday
Runs prototypes on the agency key with no view of what they cost.
With Audon
- Spikes on internal projects caught next day
- Per-model spend to choose defaults
- Fixes proven by experiment on paid plans
Your first audit takes about fifteen minutes. Thirty days of real spend, read-only.
About 2 minutes
Connect a key (read access only)
Paste an OpenAI organization admin key, an Anthropic Admin API key or an xAI management key. We validate it against the cost and usage endpoints before saving it, encrypted.
Usually under 10 minutes
Import and reconcile 30 days
Daily cost records by project, workspace and model, reconciled against what is already stored. Recent days stay provisional until the provider finalises them.
Detectors run in seconds
Read the report
Six versioned detectors run on a hashed snapshot. You get an executive summary, coverage, spend profile, findings with evidence, next steps and the method.
Client work stays client work. We see what it cost, not what it said.
No client content
Connectors read cost and usage reports only. Prompts, outputs and client documents never reach Audon.
Evidence that reconciles
Amounts come from the provider’s organization cost API and are reconciled daily. Revisions on recent days update in place rather than double counting.
Finance-only roles
billing_admin handles plans and invoices; read_only lets an account lead see spend without touching connections or alerts.
A log of who did what
Notes, alerts, proposals and approvals go into a hash-chained activity log you can export alongside the data.
Whether and how you can rebill AI costs depends on your client contracts. Audon gives you the evidence, not the contractual right. Nothing on this page is legal advice. Read the security overview and privacy policy for the details.
Questions agencies and consultancies ask before connecting.
Can we split spend by client?
Can a client log in and see only their own spend?
Will the numbers match the provider invoice?
Can we use it across several provider organizations?
Is a spike on a client project billable?
What does the free audit include?
Know your margin per client. Before the next invoice goes out.
Free 30-day audit. Read access only, no card, revoke any time.