Pricing

Published, in full, including the awkward one.

The enterprise carbon platforms we sit beside make you book a call to learn a number. A product whose entire argument is disclosure should not do that.

Open sourceFreeSelf-hosted, unlimited

The coefficient engine: the whole methodology, not a trial of it.

  • Four-resource SCI-for-AI engine
  • Every emission factor with source and version
  • Uncertainty ranges and tier classification
  • Apache 2.0, zero runtime dependencies
  • No dashboard, no ingest, no account
Read the source
Team$499per month · 5M calls · +$40/M over

The engineering-budget purchase. A card, not a procurement cycle.

  • Cost, carbon and water per trace
  • Trace-level waste profiling
  • Team, feature and model attribution
  • 13-month retention
  • Metadata-only ingest
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Business$1,999per month · 50M calls · +$25/M over

What the FinOps and sustainability leads buy together.

  • Everything in Team, plus land
  • Per-customer attribution
  • The auditor's evidence pack
  • Marginal-signal reduction claims
  • Restatement log and factor-set pinning
  • Quality-gated recommendations, SSO
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Enterprisefrom $60,000per year · unlimited

For the disclosure that a third party has to sign.

  • Self-hosted or in your VPC
  • Assurance support: we sit with your auditor
  • Independent methodology review
  • Carbon statements for your customers
  • Procurement questionnaire tooling
  • SLA and named support
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Annual billing takes two months off Team and Business. We are pre-general-availability until 2027, so every plan today is a design-partner arrangement: you get the price above, and we get somebody who will tell us what breaks.

Why these numbers

Anchored against what you already pay.

Team sits above the observability tools and below their team tiers, and the difference is carbon, water and a report they do not offer at any price.

Enterprise starts just under the floor of the enterprise carbon platforms, so the comparison lands as a reasonable next line item rather than a second carbon platform.

The overage rate is the one worth staring at. Our architecture is metadata-only. A row here is tens of bytes where a prompt-storing tool holds kilobytes. That is an engineering difference, not a discount, which is why it survives contact with a renewal.

Per million callsPrice
Datadog LLM Observability$800
Tetrameter Team, overage$40
Tetrameter Business, overage$25

Published rates, July 2026.

One unusual option

We will take a share of what we save you.

On a pilot basis, and only where we control the fix: 15% of verified savings for twelve months, capped. It makes the return unarguable, and it means our methodological rigour and our billing integrity are the same thing: if we overstate a saving, we overcharge ourselves into an argument we lose.

Operationally messy, so it is limited to one or two accounts while we learn what “verified” has to mean in a contract.