# CoreSite vs Digital Realty: which do AI models recommend for colocation, October 2026

IT AI Recommendation Index, October 2026 Edition, Colocation providers. One of fourteen models named CoreSite first on the direct prompt; one named Digital Realty. Page: https://it-ai-index.com/cloud/colocation-providers/coresite-vs-digital-realty/

| | First-choice share | Rank | Negative rate | Labels | Models naming it |
|---|---|---|---|---|---|
| CoreSite | 5% | #5 of 9 | 0% | 33 | 13 of 14 |
| Digital Realty | 2% | #6 of 9 | 12% | 32 | 13 of 14 |

## The direct prompt, model by model

- Perplexity Sonar: coresite first (first choices: CoreSite) (alternatives: Iron Mountain Data Centers, NTT Global Data Centers)
- Qwen 3.7 Flash: digital realty first (first choices: DataBank, Digital Realty) (alternatives: Equinix, NTT Global Data Centers)
- GPT-5.4 mini: neither first, one named (first choices: Equinix) (alternatives: CoreSite, Flexential, TierPoint)
- Gemini 3.5 Flash: neither first, one named (first choices: Flexential) (alternatives: Centersquare, CoreSite, Iron Mountain Data Centers, TierPoint)
- GLM 4.7 FlashX: neither first, one named (first choices: Flexential, TierPoint) (alternatives: CoreSite, CyrusOne, DataBank, Iron Mountain Data Centers, QTS)
- GPT-6 Luna: neither first, one named (first choices: Flexential) (alternatives: CoreSite, Equinix, TierPoint)
- Muse Glimmer 30B: neither first, one named (first choices: TierPoint) (alternatives: CoreSite, CyrusOne, Cyxtera, DataBank, Equinix, Flexential, NTT)
- Claude Haiku 4.5: neither named
- Grok 4.1 Fast: neither named (first choices: DataBank, TierPoint) (alternatives: Equinix)
- Mistral Small: neither named (first choices: DataBank, Equinix)
- DeepSeek V4 Flash: neither named (first choices: Flexential) (alternatives: DataBank, TierPoint)
- Llama 4 Maverick: neither named
- Kimi K2: neither named (first choices: TierPoint) (alternatives: Cologix, DataBank)
- MiniMax M2.5: neither named

## What the models said about CoreSite

- "CoreSite: Best Overall for High Support & Cloud Connectivity (US-focused)" (Gemini 3.5 Flash, paraphrase prompt, first choice)
- "the best colocation provider is usually CoreSite" (Perplexity Sonar, direct prompt, first choice)
- "CoreSite is often a strong option when you want carrier-neutral colocation with excellent connectivity in key markets." (GPT-5.4 mini, comparative prompt, alternative)

## What the models said about Digital Realty

- "Avoid hyperscale giants (Equinix, Digital Realty): ... will likely be overkill and overpriced for a mid-market B2B firm." (DeepSeek V4 Flash, direct prompt, hard negative)
- "you should generally avoid Tier-1 premium global giants like Equinix, Digital Realty, or CyrusOne" (Gemini 3.5 Flash, budget prompt, hard negative)
- "That does not mean you must avoid Equinix or Digital Realty, but it underscores the importance of reading the actual SLA" (Muse Glimmer 30B, negative prompt, soft negative)
- "Equinix, Digital Realty, DataBank, CoreSite, and Cologix are among the more established providers" (Kimi K2, negative prompt, first choice)
- "place Equinix and Digital Realty as the two largest global colocation players by revenue" (GPT-5.4 mini, comparative prompt, first choice)
- "Start with DataBank or Digital Realty for a balance of price, performance, and reliability." (Qwen 3.7 Flash, 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.