# ESG and carbon reporting: what AI models recommend, November 2026

Gane Index, November 2026 Edition. Asked as "ESG reporting software" and as "carbon accounting platform", six framings each, to fourteen models with search on, on behalf of a mid-market B2B company. Page: https://www.gane.ai/index/finance/corporate/esg-and-carbon-reporting/2026-11

**Standing:** Greenly leads with 24% of first choices; verdict contested. 54 first choices across the direct, paraphrase, budget and scale prompts.

## First-choice share

| Rank | Product | Share | Negative rate | Labels |
|---|---|---|---|---|
| 1 | [Greenly](https://www.gane.ai/index/finance/vendors/greenly/index.md) | 24% | 0% | 37 |
| 2 | [Persefoni](https://www.gane.ai/index/finance/vendors/persefoni/index.md) | 17% | 10% | 30 |
| 3 | [Sweep](https://www.gane.ai/index/finance/vendors/sweep/index.md) | 13% | 3% | 35 |
| 4 | [Watershed](https://www.gane.ai/index/finance/vendors/watershed/index.md) | 6% | 17% | 24 |
| 7 | [Novisto](https://www.gane.ai/index/finance/vendors/novisto/index.md) | 4% | 8% | 13 |
| 10 | [Coolset](https://www.gane.ai/index/finance/vendors/coolset/index.md) | 2% | 0% | 15 |
| 16 | [Workiva ESG](https://www.gane.ai/index/finance/vendors/workiva-esg/index.md) | 2% | 49% | 45 |
| 20 | [Normative](https://www.gane.ai/index/finance/vendors/normative/index.md) | 0% | 0% | 12 |
| 21 | [Plan A](https://www.gane.ai/index/finance/vendors/plan-a/index.md) | 0% | 0% | 12 |
| 23 | [Diligent ESG](https://www.gane.ai/index/finance/vendors/diligent-esg/index.md) | 0% | 19% | 16 |
| 24 | [IBM Envizi](https://www.gane.ai/index/finance/vendors/ibm-envizi/index.md) | 0% | 28% | 25 |
| 25 | [SpheraCloud Corporate Sustainability](https://www.gane.ai/index/finance/vendors/spheracloud-corporate-sustainability/index.md) | 0% | 18% | 17 |

Rank is by share of first choices among all 134 products named; products with the same share are tied, and the order among them carries no meaning. The table lists those with at least 10 labels.

## Each model's first choice on the direct prompt

- Claude Haiku 4.5: EcoOnline ESG; alternatives Diligent ESG, Novisto, Sweep
- GPT-5.4 mini: Workiva ESG; alternatives FigBytes, Horizon ESG, KEY ESG, Metrio
- Gemini 3.5 Flash: Greenly; alternatives Gravity, KEY ESG, Novata, Sweep
- Perplexity Sonar: Novata; alternatives Coolset, Greenly, Novisto, Sweep
- Grok 4.20: Sweep; alternatives Novisto, Persefoni
- Mistral Small: Emerald Power, Horizon ESG; alternatives Metrio, Position Green
- DeepSeek V4 Flash: Greenly, cubemos; alternatives Emerald Power, Horizon ESG, Sweep
- Llama 4 Maverick: no first choice
- Qwen 3.7 Flash: Novisto, Persefoni; alternatives ESG:ONE, Sweep, Watershed
- Kimi K2: ESG:ONE; alternatives Diligent ESG, EcoOnline ESG, Greenly
- GLM 4.7 FlashX: Emerald Power; alternatives Atlas Metrics, Greenly, Normative, Novato
- MiniMax M2.5: Novisto, Precoro ESG; alternatives IBM Envizi, Workiva ESG
- GPT-6 Luna: Sweep; alternatives Greenly, Workiva ESG
- Muse Glimmer 30B: Emerald Power; alternatives Coolset, ESG:ONE, Envoria, Normative

## Sources the answers cite

75 of 84 answers came back with a source list, from 14 of 14 models. Sites named in the most answers:

- fanruan.com: 20 answers, 24 citations
- toolradar.com: 19 answers, 28 citations
- greenly.earth: 17 answers, 23 citations
- g2.com: 16 answers, 28 citations
- cubemos.com: 16 answers, 16 citations
- impactbuying.com: 15 answers, 17 citations
- guideflow.com: 14 answers, 15 citations
- seedling.earth: 13 answers, 15 citations

Pages named in the most answers:

- https://cubemos.com/en/blog/esg-software-vergleich (16 answers)
- https://toolradar.com/guides/best-esg-reporting-software (14 answers)
- https://impactbuying.com/best-esg-reporting-software (13 answers)
- https://emeraldpower.io/articles/top-10-esg-reporting-software-platforms-for-2026-global-guide (12 answers)
- https://coolset.com/academy/best-esg-reporting-software-tools (11 answers)
- https://greenly.earth/en-us/blog/company-guide/our-top-5-esg-softwares (11 answers)
- https://upes.ac.in/blog/business/esg-reporting-software-tools-and-benefits (11 answers)
- https://fanruan.com/en/blog/top-sustainability-reporting-tools (10 answers)
- https://horizonesg.global/best-esg-reporting-software (10 answers)
- https://riskpublishing.com/best-esg-reporting-software-compared-2026 (10 answers)

## Warned against

- Workiva ESG: 22 of 45 labels negative. "What to Avoid (When on a Tight Budget) - Workiva, Sphera, IBM Envizi – Enterprise-grade platforms with heavy implementation costs" (DeepSeek V4 Flash, budget prompt)
- SAP Sustainability Control Tower: 5 of 12 labels negative. "SAP Sustainability Control Tower has also received negative feedback, although the specific reasons are not clear." (Llama 4 Maverick, negative prompt)
- Sustainalytics: 5 of 6 labels negative. "Private data vendors like MSCI and Sustainalytics view information with different lenses. Their datasets show low correlation" (Muse Glimmer 30B, negative prompt)
- Watershed: 4 of 24 labels negative. "technically rigorous but are generally framed for enterprises & financial institutions with complex regulatory needs and pricing/complexity" (Muse Glimmer 30B, paraphrase prompt)

## Movement since October 2026

Floor: 10 points of share, measured on the calibration repeat.
Same leader: Greenly at 24%.

- Greenly: 36% to 24%, −12. Cleared the floor by 2 points · rank 1 of 134, unchanged.
- Persefoni: 5% to 17%, +12. Cleared the floor by 2 points · rank 4 → 2 of 134.
- Coolset: 7% to 2%, −5. Inside the floor by 5 points · rank 3 → 10 of 134.
- Sweep: 10% to 13%, +3. Inside the floor by 7 points · rank 2 → 3 of 134.
- Watershed: 3% to 6%, +3. Inside the floor by 7 points · rank 5 → 4 of 134.
- Plan A: 3% to 0%, −3. Inside the floor by 7 points · rank 7 → 21 of 134.
- Novisto: 3% to 4%, +1. Inside the floor by 9 points · rank 6 → 7 of 134.
- Workiva ESG: 3% to 2%, −1. Inside the floor by 9 points · rank 8 → 16 of 134.
- Novata: 2% to 2%, ±0. Inside the floor by 10 points · rank 11 → 12 of 134.
- Normative: 0% to 0%, ±0. Inside the floor by 10 points · rank 25 → 20 of 134.
- Diligent ESG: 0% to 0%, ±0. Inside the floor by 10 points · rank 28 → 23 of 134.
- IBM Envizi: 0% to 0%, ±0. Inside the floor by 10 points · rank 29 → 24 of 134.

## Record

- Method: https://www.gane.ai/index/finance/methodology
- License: CC BY 4.0. Cite as Gane Index, November 2026 Edition, www.gane.ai/index/finance.