How We Ranked These Apps
Microsoft Teams AI apps fall into three broad categories: chat & content assistants (ask questions, draft, analyse), Office/Graph integration (act on your documents and org data), and meeting note takers (transcribe and summarise calls). We rate each app for what it is best at rather than forcing one score across categories. Facts about third-party apps below were verified against public sources as of July 2026; where pricing or availability may change, we say so.
Full disclosure: Plug and AI is our own product. We rank it #1 in the multi-model chat-assistant category because that is where it is genuinely strongest — but we list honest cons for it, and it is not the right pick for Office-document work or meeting transcription. Read the trade-offs and choose what fits your team.
Table of Contents
The Rankings
Plug & AI
Chat & content assistant · 300+ models · Pay-per-use, no per-seat fees
Plug and AI is a multi-model chat assistant for Microsoft Teams. Instead of locking you into one provider, it routes prompts to GPT, Claude, Gemini, Grok, DeepSeek, and 300+ more models through OpenRouter — and you only pay for what you use, from one shared tenant balance. It works in 1:1 chat and via channel @mentions, and adds image generation, vision, and PDF/HTML analysis. A team of 10 typically spends ~$35/month total, with a free starter credit to begin. Learn more about Plug and AI for Teams →
Pros
- 300+ models incl. GPT, Claude, Gemini, Grok, DeepSeek
- Pay per use — no per-seat fees (~$35/mo for a team of 10)
- Shared tenant balance + free starter credit
- 1:1 chat and channel @mentions
- Image generation + vision + PDF/HTML analysis
- Model switching + per-tenant default chain
- Personal tab dashboard; also available on Slack
Cons
- No Office-document integration (Copilot's turf)
- No meeting transcription or call summaries
- Responses are not streamed on Teams
- Reminders feature is Slack-only
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Microsoft 365 Copilot
Office/Graph integration · Native to the Teams client
Microsoft 365 Copilot is the only assistant on this list that lives inside the Teams client itself. It uses Teams' own live transcription to generate meeting summaries and action items, and it reaches across Word, Excel, PowerPoint, Outlook, and SharePoint grounded in your organisation's data via Microsoft Graph. That deep Office integration is its superpower — and its price. See the Copilot alternative comparison →
Pros
- Native, built into the Teams client
- Deep Word/Excel/PowerPoint/Outlook integration
- Grounded in org data via Microsoft Graph
- Meeting summaries from Teams' own transcription
- Free Copilot Chat tier for eligible M365 subscribers
Cons
- ~$30/user/mo enterprise add-on (Business add-on ~$21/user from July 2026)
- Per-seat pricing on top of a qualifying M365 plan
- GPT-based only — no Claude, Gemini, or model choice
- Full Office integration excluded from the free tier
Perplexity (Computer in Teams)
AI research & agent tasks · @Computer mentions and DMs
Perplexity brought its "Computer" agent to Microsoft Teams and listed it in the Microsoft Marketplace. You tag @Computer in a shared channel or DM it directly, describing a task in plain language. It connects to Microsoft tools like Outlook, OneDrive, SharePoint, Excel, and Azure DevOps to bring context into the work — strongest for web-grounded research and multi-step agent tasks.
Pros
- Web-grounded research with citations
- Agent tasks via @Computer mentions and DMs
- Connects to Outlook, OneDrive, SharePoint, Excel, Azure DevOps
- Cross-platform with perplexity.ai
Cons
- Requires Perplexity Pro, Enterprise Pro, or Max
- Per-seat subscription pricing
- No user-facing model switching
- Image generation/editing added (GPT-Image-2, as of 2026), but on a single locked model
Otter.ai
Meeting note taker · OtterPilot joins Teams calls
Otter.ai is one of the most widely recognised AI note takers, with long market history. Its OtterPilot feature joins Teams meetings as a bot and delivers real-time transcripts, summaries, and action items. Best for teams that primarily want fast, accurate meeting capture rather than a general chat assistant.
Pros
- Fast, real-time transcription in Teams
- Automatic summaries and action items
- Well-established, widely used
Cons
- Meeting-notes only — not a general chat assistant
- Joins as a visible bot participant
- Per-seat subscription pricing
Fireflies.ai
Meeting note taker · High-accuracy transcription + CRM sync
Fireflies.ai automatically joins Teams meetings and captures dialogue with high transcription accuracy across 60+ languages. Its strength is what happens after the call: it pushes transcripts and summaries into CRMs like Salesforce, HubSpot, and Pipedrive, making it a fit for sales and revenue teams that live in Teams.
Pros
- High transcription accuracy, 60+ languages
- CRM sync (Salesforce, HubSpot, Pipedrive)
- Conversation intelligence and search
Cons
- Meeting-notes only — not a general chat assistant
- Per-seat subscription pricing
- Best features gated to higher tiers
Read AI
Meeting notes + knowledge graph across your tools
Read AI joins Teams as an attendee (or records bot-free via its desktop and mobile apps) and generates summaries and action items. Its differentiator is a personalised knowledge graph that connects meetings, emails, and messages across Slack, Gmail, Outlook, Notion, CRM tools, and 50+ platforms — so context reaches the rest of your workflow.
Pros
- Bot-free capture option (desktop/mobile)
- Cross-platform knowledge graph (50+ integrations)
- Summaries + action items across meetings
Cons
- Meeting-intelligence focus — not a general chat assistant
- Broad data access may need admin review
- Per-seat subscription pricing
Fellow
Native AppSource note taker · No bot required
Fellow integrates natively with Microsoft Teams via AppSource to capture transcripts and generate structured meeting summaries without a bot joining the call. It adds org-wide search over your meeting history in natural language and syncs action items with owners and due dates into Jira, Salesforce, HubSpot, and Slack.
Pros
- Native Teams integration — no bot in the call
- Org-wide natural-language meeting search
- Action-item sync to Jira, Salesforce, HubSpot, Slack
Cons
- Meeting-notes focus — not a general chat assistant
- No image generation or model choice
- Per-seat subscription pricing
Side-by-Side Comparison
| App | Category | Models | Pricing Model | Standout |
|---|---|---|---|---|
| Plug and AI | Chat assistant | 300+ (all providers) | Pay per use, no per-seat | Multi-model, lowest fixed cost |
| Microsoft 365 Copilot | Office integration | GPT-based only | ~$30/user/mo add-on | Native Office + Graph data |
| Perplexity | Research / agent | Undisclosed / own | Pro/Enterprise required | Web research + agent tasks |
| Otter.ai | Meeting notes | Own | Per-seat subscription | Fast real-time transcription |
| Fireflies.ai | Meeting notes | Own | Per-seat subscription | CRM sync + accuracy |
| Read AI | Meeting intelligence | Own | Per-seat subscription | Cross-tool knowledge graph |
| Fellow | Meeting notes | Own | Per-seat subscription | Native AppSource, no bot |
Third-party pricing and features verified against public sources as of July 2026 and may change; check each vendor for current terms.
How to Choose the Right Teams AI App
You want a flexible chat & content assistant
Pick Plug and AI if you want to ask questions, draft content, generate images, and analyse files across many models — GPT, Claude, Gemini, and more — without per-seat fees. See ChatGPT for Microsoft Teams and Claude in Microsoft Teams.
You live in Word, Excel, and Outlook
Pick Microsoft 365 Copilot if you need AI that acts directly on your Office documents and org data — and you can budget the per-seat add-on. Weighing it up? Read our Microsoft Copilot alternative comparison.
You mainly need meeting notes
Pick a note taker — Otter, Fireflies, Read AI, or Fellow. These transcribe and summarise calls; they are not general chat assistants, so many teams pair one with Plug and AI.
You want web research with citations
Pick Perplexity if research and agent tasks are your core need and you already have a Perplexity subscription.
Our Verdict
Plug and AI — Best Multi-Model AI App for Microsoft Teams in 2026
No other Teams app gives you this combination: 300+ models from every major provider, pay-per-use pricing with no per-seat fees, and a shared tenant balance you can start with free credit. Need GPT for writing, Claude for reasoning, or Gemini for analysis? Pick the right model per question — all from one app.
Being honest about scope: if your priority is Office-document automation, Microsoft 365 Copilot is the native pick; if it is meeting transcription, Otter, Fireflies, Read AI, or Fellow lead. Many teams run Plug and AI for everyday AI chat alongside a note taker — and skip Copilot's per-seat bill.
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Frequently Asked Questions
What is the best AI app for Microsoft Teams in 2026?
It depends on the job. For a flexible chat assistant, Plug and AI is the best value: it brings 300+ AI models — including GPT, Claude, Gemini, Grok, and DeepSeek — into Teams with pay-per-use pricing and no per-seat fees. For deep Office-document integration, Microsoft 365 Copilot is the native choice. For meeting notes, Otter, Fireflies, Read AI, and Fellow lead. Disclosure: Plug and AI is our product.
Is Microsoft Copilot the only AI for Teams?
No. Microsoft 365 Copilot is the native, built-in option, but the Microsoft Teams marketplace hosts many independent AI apps. Plug and AI adds multi-model chat (GPT, Claude, Gemini and more) with pay-per-use pricing; Perplexity brings AI research; and Otter, Fireflies, Read AI, and Fellow specialise in meeting transcription. You can run these alongside — or instead of — Copilot. See our Microsoft Copilot alternative guide.
What is the cheapest AI assistant for Microsoft Teams?
Plug and AI is among the cheapest for chat assistance: $0/month fixed cost, pay-per-use billing, no per-seat fees, and a free starter credit — a team of 10 typically spends around $35/month total. By contrast, Microsoft 365 Copilot is roughly $30 per user per month (about $21/user for the Copilot Business add-on from July 2026), and meeting note takers use per-seat subscriptions. Microsoft 365 Copilot Chat has a free tier for eligible Microsoft 365 subscribers, but without full Office integration.
Which Teams AI apps support GPT and Claude?
Plug and AI supports both GPT and Claude — plus Gemini, Grok, DeepSeek, and 300+ models via OpenRouter — in the same Teams app, with model switching mid-conversation. Microsoft 365 Copilot is built primarily on OpenAI's GPT models and does not let you switch to Claude. Most meeting note takers use their own models and do not expose model choice.
Which AI note taker is best for Microsoft Teams?
For meeting transcription and summaries in Teams, the leading tools in 2026 are Otter.ai (OtterPilot), Fireflies.ai, Read AI, and Fellow. Fellow and Fireflies integrate natively through Microsoft AppSource, while Otter, Read AI, and Fireflies can also join calls as a bot participant. Plug and AI is a chat and content assistant, not a meeting transcription tool, so pair it with a note taker if you need both.