# Greenly vs Sweep: which do AI models recommend for ESG and carbon reporting, October 2026

Finance AI Recommendation Index, October 2026 Edition, ESG and carbon reporting. Four of fourteen models named Greenly first on the direct prompt; six named Sweep. Page: https://finance-ai-index.com/corporate/esg-and-carbon-reporting/greenly-vs-sweep/

| | First-choice share | Rank | Negative rate | Labels | Models naming it |
|---|---|---|---|---|---|
| Greenly | 36% | #1 of 13 | 6% | 36 | 12 of 14 |
| Sweep | 10% | #2 of 13 | 4% | 23 | 12 of 14 |

## The direct prompt, model by model

- Grok 4.1 Fast: both first (first choices: Greenly, Sweep) (alternatives: Horizon ESG, cubemos)
- Gemini 3.5 Flash: greenly first (first choices: Coolset, Greenly) (alternatives: Gravity, KEY ESG, Novata, Sweep)
- Perplexity Sonar: greenly first (first choices: Greenly) (alternatives: EcoOnline ESG, Novata, Novisto, Sweep)
- GPT-6 Luna: greenly first (first choices: Greenly) (alternatives: Novisto, Workiva)
- Mistral Small: sweep first (first choices: Sweep) (alternatives: EcoOnline ESG, Novata)
- DeepSeek V4 Flash: sweep first (first choices: Sweep) (alternatives: Coolset, Greenly, Novisto)
- Llama 4 Maverick: sweep first (first choices: Sweep) (alternatives: EcoOnline ESG, Novata)
- MiniMax M2.5: sweep first (first choices: Plan A, Sweep) (alternatives: EcoOnline ESG, Novata)
- Muse Glimmer 30B: sweep first (first choices: Novisto, Sweep) (alternatives: Coolset, Novata)
- Claude Haiku 4.5: neither first, one named (first choices: EcoOnline ESG) (alternatives: Coolset, Novata, Sweep)
- Kimi K2: neither first, one named (first choices: Novata, Position Green) (alternatives: Greenly, Novisto, Workiva)
- GLM 4.7 FlashX: neither first, one named (first choices: Workiva) (alternatives: Greenly, Measurabl, Novisto, Persefoni, Position Green)
- GPT-5.4 mini: neither named (first choices: Workiva) (alternatives: Credibl ESG, IBM Envizi, Microsoft Cloud for Sustainability)
- Qwen 3.7 Flash: neither named (first choices: Watershed) (alternatives: Carbon Cloud, Enablon, Persefoni, PlanA, Sphera)

## What the models said about Greenly

- "Usually not ideal on a limited budget: tools like Greenly ... can be costly for small businesses" (GPT-5.4 mini, budget prompt, soft negative)
- "High cost for smaller firms; first cycle needs heavy verification." (Grok 4.1 Fast, negative prompt, soft negative)
- "Need supported SME service with transparent pricing: Greenly. The €1,400 / $3,800 per year entry tier is the lowest published SME carbon/CSRD package in 2026." (Muse Glimmer 30B, budget prompt, first choice)
- "That makes it a good first pick when you want automated data collection, a user-friendly UI and lower total cost of ownership." (Muse Glimmer 30B, paraphrase prompt, first choice)
- "Greenly is the strongest all-around choice, offering a balance of affordability, ease of use, and robust features" (Mistral Small, paraphrase prompt, first choice)

## What the models said about Sweep

- "up to enterprise quotes for Sweep, IBM Envizi, and Workiva" (Muse Glimmer 30B, budget prompt, soft negative)
- "Sweep is frequently highlighted as the best ESG reporting software for mid-market B2B companies" (Mistral Small, direct prompt, first choice)
- "Sweep or Greenly edge out for pure mid-market B2B value based on these sources." (Grok 4.1 Fast, direct prompt, first choice)
- "Sweep — Best for mid-market companies building a carbon management programme" (Muse Glimmer 30B, direct prompt, first choice)

Share is the count of first choices across the direct, paraphrase, budget and scale prompts over all fourteen 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.