Zevero vs Sweep
Zevero and Sweep both calculate corporate emissions, but they reach the buyer from opposite directions. Zevero prints a starting price, GBP 1,500 a year for a Scope 1 and 2 tier, and attaches a one-year minimum to every plan. Sweep publishes no price at all and routes every visitor to a demo. Sweep says it is a Paris company with B Corp status and a French mission-company form, while Zevero lists offices in London, Singapore and Tokyo without naming where it is established. Neither mentions a free plan, and only Zevero says outright that no trial exists.
Sebastiaan SmitsFounderVendors can pay for more visibility on this website, for example a higher place in a ranking or more room on a page. Commercial relationships can also affect which products we feature and how prominently. Every vendor link is marked the same, whatever the arrangement behind it. How that works.
Choose Zevero ifyou are a small firm that wants a Scope 1 and 2 inventory at a known yearly figure and can commit to twelve months. You would rather budget from a printed number than sit through a demo first.
Choose Sweep ifyou are a larger company that needs Scope 3 supplier data and wider ESG reporting in one place, and you are comfortable asking for a quote. You value outside recognition and French mission-company status in a vendor.
Zevero and Sweep side by side
| Zevero | Sweep | |
|---|---|---|
| Our carbon accounting software rank | #1 of 13 | #9 of 13 |
| Established in | Not stated by the vendor | France |
| List price, 9 November 2026 | One-year minimum on every plan; Zevero Lite from GBP 1,500 a year, three further plans quoted, add-on services from GBP 500 | No plans or figures published; pricing is quoted after a demo, with no free tier or trial mentioned |
| Free tier | — | — |
| Open source | — | — |
| Self-hostable | — | — |
Both are reviewed in full in our carbon accounting software ranking: Zevero and Sweep.
Where they differ
Zevero 3 · Sweep 3 · open 0- 01
A printed GBP 1,500 against a demo form
Zevero Lite starts at GBP 1,500 a year, billed annually, and covers Scope 1 and 2 only. Its three larger plans show 'Get a quote' with no figures, in any of the four currencies the selector offers. Sweep's pricing page lists no plans, prices, billing basis or limits, just a demo booking link. A buyer can budget from Zevero's page and cannot from Sweep's, so Zevero wins the first look. Its standalone services, such as a product footprint from GBP 500, are priced openly too.
Edge: Zevero
- 02
Scope 3 and the wider value chain
Zevero's entry tier stops at Scope 1 and 2, so Scope 3 footprinting sits on the larger quoted plans, backed by more than 200,000 emission factors from seven databases including DEFRA, ecoinvent and EPA. Sweep covers Scopes 1 to 3 plus broader ESG data across the value chain, with AI-assisted supplier data collection and risk flagging. If supply chain data is the main job, Sweep describes it more directly. Zevero's emission factor count is a real strength, and its data leaves as Excel or CSV.
Edge: Sweep
- 03
Contract length and getting out
Every Zevero plan carries a one-year minimum with quarterly business reviews, though multi-year terms exist. Upgrades are prorated and immediate, while downgrades only take effect at the end of the term. Setup and onboarding are included. Sweep's pages show no term, notice period or onboarding fee, so you cannot judge exit terms before the demo. Zevero is the stricter on length but far clearer about what you sign, which suits finance teams that dislike surprises in a renewal clause.
Edge: Zevero
- 04
Seats, roles and who else may log in
Zevero includes unlimited users with flexible roles at no extra cost on all plans, and it names no caps on emissions volume, facilities or data sources. That removes the usual seat-count negotiation for a finance team that wants auditors and site managers inside the tool. Sweep's pricing page says nothing about users, seats or limits. The only related item is a navigation link for Sweep Starter with no details, so seat questions go to the demo.
Edge: Zevero
- 05
Standards named and recognition claimed
Sweep says it is built to comply with CSRD, ISSB, GRI, CDP, SASB and the Greenhouse Gas Protocol, and our entry records B Corp certification, Entreprise a Mission status and leader placements in 2026 IDC and Verdantix reports. Zevero names audit-ready ESG reports, science-based target setting and B Corp audit work, but the pages we read list no standards by name. Sweep gives a buyer more reassurance to cite internally, though listed standards and awards are claims we have not tested ourselves.
Edge: Sweep
- 06
Where each company says it sits
Our category data records Sweep in France, and its entry says it was founded in Paris in 2020, with a London office and a Denver office opened in 2025. For Zevero the pages we read give offices in London, Singapore and Tokyo and a 2025 copyright line, but no registered seat, legal form or owner. Neither site states how its platform is hosted. Sweep does name AWS and Snowflake as technology and data partners, which tells you little about where data lives.
Edge: Sweep
When neither fits
If you want a trial with your own data before spending anything, neither fits, since Zevero offers none and Sweep mentions none. Cozero and Carbmee are two other carbon accounting options in our category worth checking for that.
Zevero or Sweep: questions
3 answersWhat does Zevero Lite leave out that the bigger plans add?
Zevero Lite covers Scope 1 and 2 only, so any Scope 3 work means moving to a quoted plan. Upgrades are prorated and take effect immediately. The page does not say which of the three quoted plans adds Scope 3.
Can you try Sweep before booking a call?
Sweep's pricing page has no free plan or trial in sight, and its main button reads 'Book a demo'. A Sweep Starter link appears in the navigation without any details. So the route in is a demo, not a signup.
Would an auditor find either report format easier to review?
Both say they produce reporting suited to review: Zevero describes audit-ready ESG reports and Sweep lists CSRD, ISSB, GRI, CDP, SASB and the Greenhouse Gas Protocol.
Zevero adds Excel and CSV export and AI-assisted data validation. The pages we read give no audit sign-off terms for either.
Sources
Checked 9 November 2026- Zevero pricing: Lite price, quoted plans, one-year term, unlimited users, no trial and 200,000 emission factors.
- Zevero homepage: ERP connection, invoice upload, audit-ready reports and the offices listed.
- Sweep homepage: supplier data collection, named standards, AWS and Snowflake partners.
- Sweep pricing: absence of plans or figures and the Book a demo call to action.