Comparison
Persefoni carbon accounting: alternatives and an honest comparison
| Platform | Positioning | Pricing | Best fit |
|---|---|---|---|
| Persefoni | Enterprise climate accounting, audit-oriented, finance framing | Not published; quote-based | Large enterprises with procurement cycles and a data team |
| Watershed | Enterprise measurement plus decarbonization programs | Not published; quote-based | Well-resourced companies wanting reduction programs run in-platform |
| Sweep | EU, CSRD-first, group and supply-chain data collection | Not published; quote-based | Multi-entity EU groups |
| Greenly | SMB and mid-market, consultant-assisted | Not published; subscription plus advisory | Smaller companies wanting hands-on help |
| Normative | EU, science-led spend-based methodology | Not published; quote-based | EU mid-market with CSRD exposure |
| Carbonaccounting.ai | Ledger-first: classify your own AP data before any sales contact | Published on /pricing; early access, nothing charged today | Mid-market teams that want the audit trail without the enterprise gate |
One fact shapes this whole market: none of the incumbents publishes a price list. Any comparison page quoting their dollar figures is fabricating them, which tells you something about comparison pages. What we can compare honestly is the motion: every platform above requires a sales conversation before you see the product on your data. We inverted that. The classification demo below is the core of our carbon accounting software, it runs on your pasted lines right now, and our planned pricing is public. Broader category context is on carbon accounting platforms and in the vendor landscape post.
When Persefoni (or Watershed) is the right answer
Honestly: if you are a multinational with reasonable-assurance requirements this year, a dedicated sustainability data team, and procurement built for seven-figure platform contracts, the enterprise suites exist for you and reference-check well. If you are a mid-market company in your first or second mandatory year, you are the buyer they are not built for, and you are exactly who we are building for. That is the comparison, stated plainly.
Live demo · Scope Classifier
No signup neededSee your own spend classified to GHG Protocol scopes in about a minute.
See your own footprint classified in about a minute.
Run the live demo on a sample or on your own spend lines. If it earns it, request early access.