# GroundTruth vs Kontakt.io: which do AI models recommend for proximity, September 2026

GTM AI Recommendation Index, September 2026 Edition, Retail, proximity and IoT marketing. Two of twelve models named GroundTruth first on the direct prompt; zero named Kontakt.io. Page: https://gtm-ai-index.com/marketing/retail-proximity-and-iot-marketing/groundtruth-vs-kontakt-io/

| | First-choice share | Rank | Negative rate | Labels | Models naming it |
|---|---|---|---|---|---|
| GroundTruth | 9% | #2 of 8 | 0% | 15 | 10 of 12 |
| Kontakt.io | 2% | #5 of 8 | 7% | 27 | 11 of 12 |

## The direct prompt, model by model

- Claude Haiku 4.5: groundtruth first (first choices: Gimbal, GroundTruth, Simpli.fi)
- DeepSeek V4 Flash: groundtruth first (first choices: GroundTruth, StackAdapt) (alternatives: Hey Sid, InZynk, Radar)
- Mistral Small: neither first, one named (first choices: Foursquare, Radar) (alternatives: CleverTap, Insider, Kontakt.io, Kumulos, PlotProjects)
- Qwen 3.7 Flash: neither first, one named (first choices: Radar) (alternatives: Foursquare, Kontakt.io)
- GPT-5.4 mini: neither named (first choices: Foursquare Proximity) (alternatives: 6sense, Demandbase)
- Gemini 3.5 Flash: neither named (first choices: Uniqode) (alternatives: Purple, Radar)
- Perplexity Sonar: neither named (first choices: Propensity) (alternatives: Estimote, InMarket)
- Grok 4.1 Fast: neither named (first choices: CleverTap) (alternatives: PlotProjects, Simpli.fi)
- Llama 4 Maverick: neither named (first choices: InMarket) (alternatives: Apollo.io, Foursquare)
- Kimi K2: neither named (first choices: Radar) (alternatives: AdRoll ABM, Phunware, PlotProjects)
- GLM 4.7 FlashX: neither named (first choices: Radar) (alternatives: InMarket)
- MiniMax M2.5: neither named (first choices: Radar)

## What the models said about GroundTruth

- "start with GroundTruth (if you want managed campaigns) or Estimote (if you want to deploy your own beacons)" (MiniMax M2.5, budget prompt, first choice)
- "Default choice for mid-market B2B: GroundTruth or StackAdapt for self-serve programmatic geofencing" (DeepSeek V4 Flash, direct prompt, first choice)
- "GroundTruth stands out as the most affordable choice for budget-conscious companies." (Claude Haiku 4.5, budget prompt, first choice)

## What the models said about Kontakt.io

- "Avoid: Enterprise tools like Kontakt.io" (Grok 4.1 Fast, budget prompt, hard negative)
- "more of a managed, enterprise-leaning solution, so it's usually not the cheapest choice for a tight budget" (GPT-5.4 mini, budget prompt, soft negative)
- "Kontakt.io (Best Overall) ... Highest overall score (9.6/10) across features, ease of use, and value" (GLM 4.7 FlashX, comparative prompt, first choice)
- "Kontakt.io is considered the best overall platform for indoor location, with a score of 9.6/10." (Llama 4 Maverick, comparative prompt, first choice)
- "Best overall: Kontakt.io (enterprise) and Foursquare (no-hardware approach)" (MiniMax M2.5, comparative 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.