Microsoft Teams vs Slack
Zero of fourteen models named Microsoft Teams first on the direct prompt; zero named Slack. Microsoft Teams was named by ten of the fourteen models and Slack by ten and Microsoft Teams carries 14 labels and Slack 12, so the shares are not directly comparable.
Named in eight categories this edition.
Named in six 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 internal communications and intranet page.
By framing
Microsoft TeamsFirst choices, of fourteen modelsSlack
Across every category in the November 2026 Edition, Microsoft Teams and Slack were named in the same answer forty-one times, of the 90 answers naming Microsoft Teams and the 89 naming Slack. In those answers Slack took the first choice fourteen times and Microsoft Teams eight.
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 4.20 | | |||||
| 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 Teams Slack first choice named as an alternative argued againstblank: not namedEach cell is one answer, Microsoft Teams on the left and Slack on the right.The direct prompt
Neither was named
14 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
Slack19%#2 of 18Microsoft Teams4%#8 of 18Microsoft Teams11%#3 of 15Slack9%#6 of 15Microsoft Teams10%#3 of 11Slack4%#– of 11What the models said about Microsoft Teams
Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Three of three in this category shown.
“Stick with Google Sites or SharePoint first—you can launch a effective intranet in a few days with zero software outlay.” Gemini 3.5 Flash · budget prompt · first choice
“My default recommendation: Microsoft Teams + SharePoint—if your company already runs on Microsoft 365.” GPT-6 Luna · paraphrase prompt · first choice
“Already using Microsoft 365? → Go with Microsoft Teams (cost-effective, seamless integration)” Kimi K2 · paraphrase prompt · first choice
What the models said about Slack
Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Four of five in this category shown.
“But I wouldn't choose a chat tool alone as the home for official company communications and lasting resources.” GPT-6 Luna · paraphrase prompt · soft negative
“For most mid-sized B2B companies without strong Microsoft commitments, Slack remains a solid choice due to its ease of use and comprehensive features.” Claude Haiku 4.5 · paraphrase prompt · first choice
“Using mixed tools (Google Workspace, Salesforce, etc.)? → Choose Slack (better flexibility, superior integrations)” Kimi K2 · paraphrase prompt · first choice
“If your company is tech-forward and growth-focused, go with Slack + Notion.” Gemini 3.5 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.