CostLens
See exactly where your AI agents spend money
CostLens attributes LLM and agent inference cost to the exact agent, feature, and user that triggered it, with a running ledger, per-agent budget guardrails, and early-warning alerts before a loop drains the budget. It starts at $49/month.
CostLens attributes LLM and agent inference cost to the agent, feature, and user that triggered it - with a running ledger, per-agent budget guardrails, and early-warning alerts before a loop drains the budget.
Metrics you get
- Starts at $49/month
- Attributes cost by agent, feature, and user
- Per-agent budget guardrails + early-warning alerts
How does CostLens attribute cost?
It maps every inference call to the agent, feature, and user that caused it, so you see which workflow is quietly the most expensive instead of one blended bill you cannot act on.
What are the budget guardrails?
You set per-agent caps; when a loop starts spinning, CostLens warns before it eats the whole monthly budget, which is the failure mode that surprises finance most.
Is the ledger audit-ready?
Yes. It keeps an exportable ledger of who spent what, when, so finance and post-incident reviews have a clean trail rather than a guess.
Do I need a heavy APM stack?
No. CostLens is a focused cost ledger, not a full observability platform — it covers the teams that only need attribution, caps, and alerts.
Questions CostLens cannot answer
CostLens focuses on a single job: See exactly where your AI agents spend money. It tracks and formats money, but it is not your accountant. Reconcile its numbers against your real records before anything goes to a customer or the tax authority.
What it measures
- Cost by agent / feature / user
- Budget guardrails
- Early-warning alerts
- Audit-ready ledger
Questions about data and accuracy
What does CostLens do?
CostLens attributes LLM and agent inference cost to the agent, feature, and user that triggered it, with a running ledger, per-agent budget guardrails, and early-warning alerts before a loop drains the budget.
How much does CostLens cost?
Plans start at $49/month (billed $490/year). Check the live tool for the current plan before connecting your agents.
Who is CostLens for?
When the task is see exactly where your AI agents spend money, solo founders and small finance teams reach for CostLens.
How are budget guardrails enforced?
You set per-agent caps and CostLens sends an early-warning alert when spend trends toward blowing the monthly budget, so you can stop a runaway loop in time.
Is the spend ledger exportable?
Yes. The ledger of cost by agent, feature, and user is exportable for finance reconciliation and post-incident review.
Do I need a full APM or observability platform?
No. CostLens is a lightweight cost ledger focused on attribution, caps, and alerts — enough for teams that do not want a heavy monitoring stack.
When will CostLens mislead you?
Not medical advice. Use it for planning and motivation; for any health condition, symptoms, or training with risk, consult a qualified professional.
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