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Index Equity and corporate ESG and carbon reporting › Coolset vs Persefoni
ESG and carbon reporting · September 2026 Edition

Coolset vs Persefoni

Zero of twelve models named Coolset first on the direct prompt; zero named Persefoni. Coolset was named by ten of the twelve models and Persefoni by twelve and Coolset carries 19 labels and Persefoni 28, so the shares are not directly comparable.

Coolset

accepted challenger

Named in one category this edition.

Persefoni

accepted challenger

Named in one category this edition.

First-choice share8%6%Of first choices across the direct, paraphrase, budget and scale prompts, 0 to 100.
Negative rate0%4%Negative labels as a share of the product's labels, 0 to 100.
Rank in category#5#7A position in a field of 15; printed, not drawn.
Labels1928A count; the two differ.
The two percentage rows are drawn on one 0 to 100 track, Coolset reading right to left. Rank and label count are printed, not drawn.Sweep was named alongside these two in eleven of the twelve direct answers. Sweep vs Coolset · Sweep vs Persefoni · Greenly vs Coolset

Share is the count of first choices across the direct, paraphrase, budget and scale prompts over all twelve models, for a mid-market B2B company; rank is within the category; every quote names the model and the prompt it came from. Both figures come from the ESG and carbon reporting page.

By framing

How many of the twelve models made each the first choice, per way of asking, and how many argued against it.
CoolsetFirst choices, of twelve modelsPersefoni
Direct00
Paraphrase20
Comparative00
Budget-constrained03
Scale-constrained201 against Persefoni
Negative00
Bars are first choices, 0 to 12 each sideModels that argued againstA model can name both, so the two sides of a row do not sum to twelve.

Every model, every framing

The seventy-two answers behind the chart above, one cell each: where Coolset and Persefoni stood in it.
ModelDirectParaphraseComparativeBudget-constrainedScale-constrainedNegative
Claude Haiku 4.5
GPT-5.4 mini
Gemini 3.5 Flash
Perplexity Sonar
Grok 4.1 Fast
Mistral Small
DeepSeek V4 Flash
Llama 4 Maverick
Qwen 3.7 Flash
Kimi K2
GLM 4.7 FlashX
MiniMax M2.5
Coolset Persefoni first choice named as an alternative argued againstblank: not namedEach cell is one answer, Coolset on the left and Persefoni on the right.

The direct prompt

The plain question, one answer per model, grouped by where Coolset and Persefoni stood in it.

Neither was the first choice, one was named

6 of 12 modelsThe answer put something else first and named one of the two as an alternative.
Gemini 3.5 FlashGreenly, Sweep alternatives: Coolset, Novata
Grok 4.1 FastSweep alternatives: Coolset, Novisto
Mistral SmallSweep alternatives: Coolset, EcoOnline ESG
DeepSeek V4 FlashSweep alternatives: Coolset, Greenly, Plan A, Tanso
Kimi K2Novisto alternatives: Coolset, Sustain.Life, Sweep, Workiva
MiniMax M2.5EcoOnline ESG, Sweep alternatives: Coolset, Normative, Novisto, Plan A

Neither was named

6 of 12 modelsThe answer made no first choice from these two in this category.
Claude Haiku 4.5EcoOnline ESG alternatives: Greenstone, Normative, Sphera, Sweep
GPT-5.4 miniWorkiva alternatives: IBM Envizi, Novisto, Sphera
Perplexity SonarNovisto alternatives: EcoOnline ESG, Greenly, Novata, Sweep
Llama 4 MaverickEcoOnline ESG, Novisto, Sweep
Qwen 3.7 FlashNovisto alternatives: Gravity, LogicGate, Sweep
GLM 4.7 FlashXNovisto alternatives: EcoOnline ESG, Greenly, Sustain.Life, Sweep

Bold names in an answer are the products the judge labeled a first choice; a model naming several gives each of them that label. The full answer text for every row is in the record.

By buyer segment

The same question asked on behalf of a different buyer. Each standing is computed within its segment and they are never added together. The figures above are the mid-market standing, which is the one the category orders by.
Small business
Persefoni leads by nine points.
Persefoni9%#4 of 13
Coolset0%#7 of 13
The full small business standing →
Mid-marketThe figures above
The order flips: Coolset leads at mid-market.
Coolset8%#5 of 15
Persefoni6%#7 of 15
The full mid-market standing →
Enterprise
The order flips: Persefoni leads at enterprise.
Persefoni4%#5 of 12
Coolset0%#– of 12
The full enterprise standing →

What the models said about Coolset

Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Three of four in this category shown.

“Coolset is frequently cited as the "go-to" for mid-market companies... Choose Coolset if you are in Europe and need strict regulatory compliance (CSRD)” Qwen 3.7 Flash · paraphrase prompt · first choice
“Prioritize platforms suited for 500–5,000 employees, like Coolset, ESG:ONE, EcoOnline, or Novisto... Shortlist 3–5: Coolset (multi-framework, AI)” Grok 4.1 Fast · scale prompt · first choice
“Sweep / Coolset / Plan A / ESG:ONE: These are specifically built for upper-mid-market companies.” Gemini 3.5 Flash · scale prompt · first choice

What the models said about Persefoni

Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Four of five in this category shown.

“Enterprise-grade platforms (like *Workiva*, *IBM Envizi*, or *Persefoni*) are usually overkill” Gemini 3.5 Flash · scale prompt · soft negative
“I'd choose Persefoni because it has a free single-user tier and is repeatedly positioned as the cheapest starting point” Perplexity Sonar · budget prompt · first choice
“### 1. Persefoni Pro (Free) ... Start with Persefoni's free tier” MiniMax M2.5 · budget prompt · first choice
“Top Recommendation: Persefoni ... robust free tier” Qwen 3.7 Flash · budget prompt · first choice
Also compared

Comparisons are drawn for the top eight products in each category, each against each. The output is the models' output; nothing here is a recommendation by the index.