Best Carbon Accounting AI Alternatives in 2026
Updated
20 platforms from carbon accounting software ranked against Carbon Accounting AI on the same published basis.
- 1Carbon Accounting AI vs Carbonfact
- 2Carbon Accounting AI vs CarbonTool
- 3Carbon Accounting AI vs Greenio
- 4Carbon Accounting AI vs Persefoni
- 5Carbon Accounting AI vs CO2 AI
- 6Carbon Accounting AI vs Arbor
- 7Carbon Accounting AI vs CarbonSmart
- 8Carbon Accounting AI vs Plan A
- 9Carbon Accounting AI vs SINAI Technologies
- 10Carbon Accounting AI vs Watershed
- 11Carbon Accounting AI vs CarbonAnalytics
- 12Carbon Accounting AI vs GreenStitch
- 13Carbon Accounting AI vs NetNada
- 14Carbon Accounting AI vs BigMile
- 15Carbon Accounting AI vs CarbonChain
- 16Carbon Accounting AI vs EcoReko
- 17Carbon Accounting AI vs Hedgehog Carbon Platform
- 18Carbon Accounting AI vs CarbonInk
- 19Carbon Accounting AI vs 50X Impact
- 20Carbon Accounting AI vs ACT Group Decarbonization Platform
Carbon Accounting AI alternatives compared
| # | Platform | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | Carbonfact | 7.4 | Free plan | Free | API, Web |
| 2 | CarbonTool | 7.4 | Free plan | $166.67/mo | API, Web |
| 3 | Greenio | 7.3 | Free plan | ₹2,999/mo | API, Web |
| 4 | Persefoni | 7.3 | Free plan | Free | API, Web |
| 5 | CO2 AI | 7.0 | API, Web | ||
| 6 | Arbor | 6.9 | $104.17/mo | API, Web | |
| 7 | CarbonSmart | 6.9 | API, self-hosted, Web | ||
| 8 | Plan A | 6.9 | API, Web | ||
| 9 | SINAI Technologies | 6.9 | API, Web | ||
| 10 | Watershed | 6.9 | API, Web | ||
| 11 | CarbonAnalytics | 6.8 | No | £69.99/mo | API, Web |
| 12 | GreenStitch | 6.8 | No | $250/mo | API, Web |
| 13 | NetNada | 6.8 | API, self-hosted, Web | ||
| 14 | BigMile | 6.7 | API, Web | ||
| 15 | CarbonChain | 6.7 | API, Web | ||
| 16 | EcoReko | 5.9 | Free plan | €375/mo | Web |
| 17 | Hedgehog Carbon Platform | 5.9 | Free plan | €100/mo | Web |
| 18 | CarbonInk | 5.8 | Free plan | Free | Mac, Windows |
| 19 | 50X Impact | 5.6 | Web | ||
| 20 | ACT Group Decarbonization Platform | 5.5 | Web |
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Questions about Carbon Accounting AI alternatives
What is the best alternative to Carbon Accounting AI?
Carbonfact, number 1 in carbon accounting software with a score of 7.4 out of 10. The others here: CarbonTool, Greenio, Persefoni and 16 more.
What is the best free alternative to Carbon Accounting AI?
Carbonfact is the best-ranked alternative with a free plan. 7 of the 20 alternatives here publish a free plan on their own pricing pages.
How are these alternatives ranked?
Ranked on what each maker publishes, open and connectable first: a public API, open-source code, the depth of its documentation and a free tier to try it on. Model lists are sorted by the figure in their title, exactly as each provider publishes it.