OPEN SOURCE · pip install apeiros-sdk

Your AI bill doesn't have to be a surprise.

Get real-time visibility into which customers, agents, and workflows are profitable — so your AI bill is never a surprise again.

Request early accessSee how it works
LIVE — watching 3 agent workflows

Real-time detection. Zero config.

Two lines at startup. Apeiros watches every call — context growth, retry loops, cost spikes — and flags problems as they happen.

Marketing Agent
claude-sonnet-4-6
waiting…
Support Bot
claude-haiku-4-5
waiting…
Data Pipeline
claude-sonnet-4-6
waiting…
Retry loop
Context bloat
Token acceleration
Budget exceeded
Tool amplification
What teams are experiencing

AI bills are surprising because visibility comes too late.

Costs with no attribution

Your AI invoice is a single number. It doesn't tell you which customer, agent, or workflow caused it — or which ones are worth the spend.

Waste that compounds invisibly

Retry loops, context bloat, and tool amplification burn through budgets silently. By the time you notice, the damage is done.

Visibility that comes too late

Finance tools explain what happened after the invoice arrives. Nothing tells you what's happening mid-month, in real time, per customer.

Why your AI bill is unpredictable

5 reasons costs spike without warning

01
Over-provisioned intelligence
Agents use maximum reasoning and context even when unnecessary.
Simple tasks are solved like complex ones — cost doesn't match value.
02
Context compounding
Context grows with every step and is reprocessed repeatedly.
You pay for the same information again and again.
03
Retry loops and failure amplification
Failures trigger retries with the same or larger context.
The least valuable work often costs the most.
04
Tool amplification
Tool outputs are fed back into context, expanding cost recursively.
Each integration makes workflows disproportionately expensive.
05
No economic awareness
Agents execute everything with equal effort regardless of value.
No prioritization. No budget constraints. No cost vs value decision.
What Apeiros does

Visibility and control, in real time.

Apeiros sits at inference time, not after it. You see which customers, agents, and workflows are profitable — and enforce budget limits before the damage is done.

Attribution at the source

Tag any task with a customer, agent, or workflow ID. Apeiros tracks token costs at inference time so you know exactly what's driving your bill.

Real-time anomaly detection

Retry loops, context bloat, and tool amplification are flagged as they happen — not after the invoice arrives.

Zero infrastructure

An SDK that wraps your existing model calls. No database, no storage, no pipeline changes. Works in a single session.

How it works

From zero to margin visibility in minutes.

01Instrument in two lines
import apeiros
apeiros.instrument()
apeiros.start_session(budget=5.00)
02Tag by customer, agent, or workflow
agent = ApeirosAgent(
  customer_id="acme-corp",
  model="claude-sonnet-4-6"
)
agent.start_task("summarize-report")
agent.update_tokens(8_500)
agent.end_task()
03See who's profitable
ApeirosAgent.customer_report(plan_price=299.0)

  Customer        Cost      Margin
  acme-corp    $  3.17    98.9%  ✓ healthy
  nova-co      $997.92    -233%  ✗ underwater
Design partners

Built for teams shipping AI agents today

  • You're running LLM-powered agents in production or near-production
  • You've seen an unexpected token cost spike you couldn't explain
  • You want visibility and control before the next bill arrives

“Apeiros ensures every token spent is intentional, not accidental.”

We're onboarding design partners in April 2026. We'll respond within 48 hours.