Microsoft 365 Copilot vs Glean
Four of fourteen models named Microsoft 365 Copilot first on the direct prompt; one named Glean. Microsoft 365 Copilot was named by fourteen of the fourteen models and Glean by seven and Microsoft 365 Copilot carries 40 labels and Glean 16, so the shares are not directly comparable.
Named in three categories this edition.
Named in two categories this edition.
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; every quote names the model and the prompt it came from. Both figures come from the Enterprise AI assistants page.
By framing
Microsoft 365 CopilotFirst choices, of fourteen modelsGlean
Across every category in the October 2026 Edition, Microsoft 365 Copilot and Glean were named in the same answer thirty times, of the 129 answers naming Microsoft 365 Copilot and the 59 naming Glean. In those answers Glean took the first choice four times and Microsoft 365 Copilot eleven.
Every model, every framing
| Model | Direct | Paraphrase | Comparative | Budget-constrained | Scale-constrained | Negative |
|---|---|---|---|---|---|---|
| Claude Haiku 4.5 | | | ||||
| GPT-5.4 mini | | | | |||
| Gemini 3.5 Flash | | | | | | |
| Perplexity Sonar | | |||||
| Grok 4.1 Fast | | | | | | |
| Mistral Small | | | ||||
| DeepSeek V4 Flash | | | | | ||
| Llama 4 Maverick | | |||||
| Qwen 3.7 Flash | | | | | ||
| Kimi K2 | | | | | ||
| GLM 4.7 FlashX | | | | | ||
| MiniMax M2.5 | | |||||
| GPT-6 Luna | | | | |||
| Muse Glimmer 30B | | | |
Microsoft 365 Copilot Glean first choice named as an alternative argued againstblank: not namedEach cell is one answer, Microsoft 365 Copilot on the left and Glean on the right.The direct prompt
Both were the first choice
1 of 14 modelsThe answer named them together, and the judge labeled each a first choice.Microsoft 365 Copilot first, Glean not the choice
3 of 14 modelsGlean was named in the answer but not as the choice, or not at all.Neither was the first choice, one was named
3 of 14 modelsThe answer put something else first and named one of the two as an alternative.Neither was named
7 of 14 modelsThe answer made no first choice from these two in this category.Bold names in an answer are the products the judge labeled a first choice; a model naming several gives each of them that label. The full answer text for every row is in the record.
By buyer segment
Microsoft 365 Copilot11%#2 of 6Glean0%#6 of 6Microsoft 365 Copilot25%#2 of 7Glean6%#5 of 7Microsoft 365 Copilot40%#1 of 7Glean10%#3 of 7What the models said about Microsoft 365 Copilot
Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Six of eight in this category shown.
“Multiple controversies—EchoLeak (CVE-2025-32711) enabled zero-click data extraction via email injections; summarized confidential emails ignoring DLP/sensitivity labels.” Grok 4.1 Fast · negative prompt · hard negative
“Microsoft 365 Copilot was exploited via a zero‑click prompt injection in email (CVE‑2025‑32711), exfiltrating data from OneDrive/SharePoint/Teams without user action.” GLM 4.7 FlashX · negative prompt · hard negative
“Do not deploy M365 Copilot unless you have spent months cleaning up internal file-sharing permissions” Gemini 3.5 Flash · negative prompt · hard negative
“If an organization uses Windows and O365 exclusively, Copilot is the default choice due to seamless access to SharePoint documents without leaving the app.” Qwen 3.7 Flash · comparative prompt · first choice
“my default recommendation would be Microsoft 365 Copilot if your employees already live in Microsoft 365 and Teams” GPT-5.4 mini · paraphrase prompt · first choice
“My default recommendation: choose Microsoft 365 Copilot if your company already runs on Microsoft 365” GPT-6 Luna · paraphrase prompt · first choice
What the models said about Glean
Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Four of five in this category shown.
“Avoid over-investing in "enterprise-only" platforms like Glean or Moveworks” Kimi K2 · paraphrase prompt · soft negative
“Best Overall for Connected Knowledge & Search: Glean ... Glean is the gold standard.” Gemini 3.5 Flash · paraphrase prompt · first choice
“Glean: Best for Cross-Platform Knowledge & "Universal Search"” Gemini 3.5 Flash · direct prompt · first choice
“Top Recommendation: Glean” DeepSeek V4 Flash · paraphrase prompt · first choice
Comparisons are drawn for the top eight products in each category, each against each. The output is the models' output; nothing here is a recommendation by the index.