# Plan A vs Coolset: which do AI models recommend for ESG and carbon reporting, September 2026

Finance AI Recommendation Index, September 2026 Edition, ESG and carbon reporting. Zero of twelve models named Plan A first on the direct prompt; zero named Coolset. Page: https://finance-ai-index.com/corporate/esg-and-carbon-reporting/plan-a-vs-coolset/

| | First-choice share | Rank | Negative rate | Labels | Models naming it |
|---|---|---|---|---|---|
| Plan A | 10% | #4 of 15 | 7% | 14 | 10 of 12 |
| Coolset | 8% | #5 of 15 | 0% | 19 | 10 of 12 |

## The direct prompt, model by model

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

## What the models said about Plan A

- "unproven mid-market carbon tools like Sweep, Plan A, or lower-rated ones" (Grok 4.1 Fast, negative prompt, soft negative)
- "For a broader range of compliance frameworks and a focus on decarbonisation, Plan A is a strong alternative." (Mistral Small, paraphrase 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)
- "If you want a single default recommendation, I'd choose Plan A for most mid-sized B2B companies" (Perplexity Sonar, paraphrase prompt, first choice)

## What the models said about Coolset

- "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)

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.