# EcoOnline ESG vs Persefoni: which do AI models recommend for ESG and carbon reporting, September 2026

Finance AI Recommendation Index, September 2026 Edition, ESG and carbon reporting. Three of twelve models named EcoOnline ESG first on the direct prompt; zero named Persefoni. Page: https://finance-ai-index.com/corporate/esg-and-carbon-reporting/ecoonline-esg-vs-persefoni/

| | First-choice share | Rank | Negative rate | Labels | Models naming it |
|---|---|---|---|---|---|
| EcoOnline ESG | 8% | #6 of 15 | 0% | 12 | 9 of 12 |
| Persefoni | 6% | #7 of 15 | 4% | 28 | 12 of 12 |

## The direct prompt, model by model

- Claude Haiku 4.5: ecoonline esg first (first choices: EcoOnline ESG) (alternatives: Greenstone, Normative, Sphera, Sweep)
- Llama 4 Maverick: ecoonline esg first (first choices: EcoOnline ESG, Novisto, Sweep)
- MiniMax M2.5: ecoonline esg first (first choices: EcoOnline ESG, Sweep) (alternatives: Coolset, Normative, Novisto, Plan A)
- Perplexity Sonar: neither first, one named (first choices: Novisto) (alternatives: EcoOnline ESG, Greenly, Novata, Sweep)
- Mistral Small: neither first, one named (first choices: Sweep) (alternatives: Coolset, EcoOnline ESG)
- GLM 4.7 FlashX: neither first, one named (first choices: Novisto) (alternatives: EcoOnline ESG, Greenly, Sustain.Life, Sweep)
- GPT-5.4 mini: neither named (first choices: Workiva) (alternatives: IBM Envizi, Novisto, Sphera)
- Gemini 3.5 Flash: neither named (first choices: Greenly, Sweep) (alternatives: Coolset, Novata)
- Grok 4.1 Fast: neither named (first choices: Sweep) (alternatives: Coolset, Novisto)
- DeepSeek V4 Flash: neither named (first choices: Sweep) (alternatives: Coolset, Greenly, Plan A, Tanso)
- Qwen 3.7 Flash: neither named (first choices: Novisto) (alternatives: Gravity, LogicGate, Sweep)
- Kimi K2: neither named (first choices: Novisto) (alternatives: Coolset, Sustain.Life, Sweep, Workiva)

## What the models said about EcoOnline ESG

- "Sweep and EcoOnline appear to be the most consistently recommended options tailored to your size and needs" (MiniMax M2.5, direct prompt, first choice)
- "Best budget pick: EcoOnline — identified by Capterra as the "best budget option"" (GPT-5.4 mini, budget prompt, first choice)
- "EcoOnline ESG is highlighted as best for mid-market sustainability teams" (Claude Haiku 4.5, direct prompt, first choice)

## What the models said about Persefoni

- "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)

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. Comparisons are drawn for the top eight products in each category. Published under CC BY 4.0; the output is the models' output, and nothing here is a recommendation by the index.