# Programmatic and display advertising: what AI models recommend, September 2026

Gane Index, September 2026 Edition. Asked as "programmatic advertising platform" and as "demand-side platform for display ads", six framings each, to six frontier models with search on, on behalf of a mid-market B2B software company. Page: https://www.gane.ai/index/gtm/marketing/programmatic-and-display-advertising/2026-09-expanded

This is the permanent record of the September 2026 Edition, published September 9, 2026 and superseded since. The current standing: https://www.gane.ai/index/gtm/marketing/programmatic-and-display-advertising/index.md

**Standing:** StackAdapt leads with 58% of first choices; verdict clear leader. 24 first choices across the direct, paraphrase, budget and scale prompts.

## First-choice share

| Rank | Product | Share | Negative rate | Labels |
|---|---|---|---|---|
| 1 | [StackAdapt](https://www.gane.ai/index/gtm/vendors/stackadapt/index.md) | 58% | 4% | 25 |
| 5 | [Google Display & Video 360](https://www.gane.ai/index/gtm/vendors/google-display-video-360/index.md) | 4% | 27% | 11 |
| 11 | [Demandbase Advertising](https://www.gane.ai/index/gtm/vendors/demandbase-advertising/index.md) | 0% | 18% | 11 |
| 12 | [Amazon DSP](https://www.gane.ai/index/gtm/vendors/amazon-dsp/index.md) | 0% | 27% | 11 |
| 50 | [DV360](https://www.gane.ai/index/gtm/vendors/dv360/index.md) | 0% | 60% | 10 |
| 52 | [The Trade Desk](https://www.gane.ai/index/gtm/vendors/the-trade-desk/index.md) | 0% | 58% | 26 |

Rank is by share of first choices among all 52 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 Opus 5: StackAdapt; alternatives 6sense, AdRoll ABM, Demandbase Advertising
- Claude Opus 4.8: LinkedIn Campaign Manager; alternatives 6sense, Demandbase Advertising, Google Display & Video 360, StackAdapt
- GPT-6 Astra: StackAdapt; alternatives AdRoll ABM, Demandbase Advertising
- GPT-5.6 Sol: StackAdapt; alternatives 6sense, DV360, Demandbase Advertising, Google Search
- Gemini 3.1 Pro: StackAdapt; alternatives AdRoll ABM, LinkedIn Campaign Manager, Metadata.io
- Perplexity Sonar Pro: StackAdapt; alternatives AdRoll ABM, DV360, Demandbase Advertising, The Trade Desk

## Sources the answers cite

28 of 36 answers came back with a source list, from 6 of 6 models. Sites named in the most answers:

- improvado.io: 11 answers, 20 citations
- stackadapt.com: 9 answers, 13 citations
- demandbase.com: 8 answers, 8 citations
- reddit.com: 7 answers, 12 citations
- taqtics.com: 7 answers, 8 citations
- vibe.co: 7 answers, 8 citations
- admanage.ai: 7 answers, 7 citations
- aidigital.com: 6 answers, 8 citations

Pages named in the most answers:

- https://improvado.io/blog/top-programmatic-platforms (11 answers)
- https://admanage.ai/blog/programmatic-advertising-platforms (7 answers)
- https://vibe.co/blog/how-to/programmatic-advertising-platforms (7 answers)
- https://directiveconsulting.com/blog/the-top-5-programmatic-platforms-leading-the-way-in-2026 (6 answers)
- https://taqtics.com/answers/programmatic-advertising/programmatic-advertising-platforms (6 answers)
- https://heysid.com/resources/best-programmatic-advertising-platforms-for-b2b (5 answers)
- https://aidigital.com/blog/programmatic-advertising-platforms (4 answers)
- https://inbeat.co/articles/top-programmatic-advertising-platforms (4 answers)
- https://stackadapt.com/industry-solutions/b2b (4 answers)
- https://6sense.com/blog/best-b2b-programmatic-advertising-platforms (3 answers)

## Warned against

- The Trade Desk: 15 of 26 labels negative. "Avoid enterprise platforms such as DV360 or The Trade Desk" (GPT-5.6 Sol, budget prompt)
- DV360: 6 of 10 labels negative. "Avoid enterprise platforms such as DV360 or The Trade Desk" (GPT-5.6 Sol, budget prompt)
- Amazon DSP: 3 of 11 labels negative. "Be more cautious when your primary objective is neutral open-web buying or cross-platform measurement." (GPT-5.6 Sol, negative prompt)
- Google Display & Video 360: 3 of 11 labels negative. "high monthly minimum spends (often $10,000+) and strict contracts required by major Demand-Side Platforms (DSPs) like Google DV360 or The Trade Desk" (Gemini 3.1 Pro, budget prompt)

## Record

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