Choosing between reasoning and fast models in Microsoft Copilot Studio depends on the complexity of the task and the speed required.
- Reasoning models are best for complex, multi-step problems where detailed analysis is needed, like financial forecasting or strategic planning. They take longer to process but offer deeper insights.
- Fast models prioritize speed for straightforward tasks like customer support, quick data retrieval, or real-time collaboration. They deliver results in seconds but lack the depth of reasoning models.
Key takeaway: Use reasoning models for tasks that demand thorough analysis and fast models for quick, routine tasks. Combining both can optimize workflows in Microsoft Teams and beyond.
| Aspect | Reasoning Models | Fast Models |
|---|---|---|
| Primary Strength | Detailed problem-solving | Quick responses for simple tasks |
| Response Time | Minutes for complex queries | Seconds for routine queries |
| Cost | Higher (resource-intensive) | Lower (efficient for high-volume use) |
| Best Use Cases | Strategic decisions, in-depth tasks | Real-time interactions, routine tasks |
Focus on your task’s complexity, time constraints, and resource availability to make the right choice.
1. Reasoning Models
Speed
Reasoning models take their time when processing complex requests, often working over seconds or even minutes. This slower pace isn’t a flaw – it’s what allows them to perform layered analysis and examine multiple factors in detail. While fast models churn out results in milliseconds, reasoning models focus on thoroughness, cross-referencing data, and building logical connections to deliver well-rounded insights.
This trade-off between speed and depth becomes especially important when tackling intricate business problems. The extra time spent ensures that the analysis is comprehensive, making these models particularly suited for challenges where quick fixes won’t cut it.
Depth of Reasoning
What sets reasoning models apart is their ability to break down complex problems into smaller parts and then piece them back together into actionable recommendations. They excel at tasks requiring contextual understanding, pattern recognition, and nuanced decision-making.
For example, these models can sift through large datasets to uncover hidden patterns, identify relationships between variables, and explain the reasoning behind their conclusions. This makes them invaluable for strategic planning, risk assessment, and any scenario where understanding the "why" behind a recommendation is critical.
Another strength is their ability to handle incomplete or ambiguous data. Instead of giving shallow answers, these models point out gaps in the information, suggest what additional data might be needed, and offer qualified recommendations based on what’s available. This analytical depth makes them a go-to choice for solving complex and uncertain problems.
Best Use Cases
Reasoning models shine in several key areas:
- Financial Forecasting: They analyze market trends, assess economic indicators, and deliver projections with detailed justifications.
- Strategic Planning: These models are ideal for evaluating competitive landscapes and crafting long-term strategies that consider multiple stakeholder perspectives.
- Compliance and Regulatory Analysis: Their thoroughness helps in reviewing policies, spotting regulatory gaps, and suggesting legally sound remediation strategies.
- Research and Development: From evaluating new product ideas to analyzing customer feedback and assessing technical feasibility, these models handle complex data sets with ease.
Integration with Microsoft Teams

Using reasoning models in Microsoft Teams can enhance collaboration and decision-making. For example, they can be integrated into channels to assist with strategic discussions or long-term planning. Team members can submit complex queries asynchronously, allowing the model to process and deliver detailed analyses without interrupting live conversations.
These models are also highly effective in document review workflows. Within Teams, they can analyze shared files, contracts, or reports and provide summaries with actionable recommendations. By simply @mentioning the model, team members can request in-depth analysis of shared content.
When preparing for meetings, reasoning models can review agenda items and background materials, summarizing key points directly in Teams project channels. For project management, they can evaluate timelines, resource allocation, and risks, offering detailed health assessments and optimization suggestions – all seamlessly integrated into Teams workflows.
Which AI should you use? Copilot, Copilot Studio, Azure AI Studio and more!

2. Fast Models
Fast models are designed to deliver quick results for routine tasks, prioritizing speed over deep analysis. They’re perfect for situations where time is of the essence.
Speed
These models focus on providing immediate responses, making them ideal for tasks that require real-time solutions. Whether it’s live customer support, quick data retrieval, or offering instant feedback during a presentation, fast models keep things moving.
In high-pressure scenarios, like client meetings, these models ensure that workflows remain uninterrupted.
"These models are optimized for speed and responsiveness. They’re ideal for quick edits, utility functions, syntax help, and lightweight prototyping. You’ll get fast answers without waiting for unnecessary depth or long reasoning chains." – GitHub Docs
Depth of Reasoning
Fast models are built to handle straightforward tasks efficiently. They excel at answering clear-cut questions and assisting with routine operations without diving into complex reasoning. By focusing on simplicity, they maintain their speed while still delivering effective results for everyday needs.
This balance of speed and simplicity makes them indispensable for time-sensitive tasks.
Best Use Cases
Fast models shine in scenarios where quick results are critical:
- Customer Service and Support: Instantly retrieve account details, answer FAQs, and suggest troubleshooting steps.
- Real-time Collaboration: During brainstorming or meetings, they help clarify terms, generate ideas, or provide quick explanations without disrupting the flow.
- Content Creation Assistance: From grammar checks to quick rewrites, they keep creative processes running smoothly by offering immediate feedback.
- Data Retrieval and Formatting: Whether it’s extracting specific information, performing simple calculations, or converting data formats, fast models deliver results in seconds.
"Fast, efficient, and cost-effective, o4-mini and o3-mini are ideal for simple coding questions and quick iterations." – Cassidy Williams, Sr. Director, Developer Advocacy, GitHub
Integration with Microsoft Teams
Fast models are particularly effective within Microsoft Teams, where speed and responsiveness are key. They can be set up to respond instantly to @mentions in chat channels, ensuring quick answers that keep conversations moving.
For daily standups, these models can summarize updates, pull in recent activity data, or provide status updates on the spot. This ensures team members stay informed about progress and deadlines without delay.
Fast models also enhance notification systems within Teams. They process incoming data quickly, flag urgent items, and send timely alerts to the right people. This makes them invaluable for monitoring dashboards, tracking metrics, or highlighting time-critical issues.
During live presentations or client calls on Teams, fast models are a game-changer. They can look up facts, generate summaries, or answer simple questions instantly, ensuring discussions remain smooth and uninterrupted.
sbb-itb-8be0fd2
Advantages and Disadvantages
Choosing the right model depends on understanding the tradeoffs between performance, cost, and user experience. Each model type offers distinct benefits and limitations that can shape how well it fits your specific needs.
Reasoning models shine when precision and detailed analysis are critical. They are built to tackle complex, multi-step problems, making them ideal for tasks that demand a deep level of understanding. However, this depth comes at a price – both in terms of higher operational costs and slower response times. If your situation requires instant answers, reasoning models might not be the best fit.
Fast models, on the other hand, are designed for speed. They excel at handling routine, time-sensitive tasks, delivering quick responses with minimal computational demand. Their efficiency makes them cost-effective, especially for high-volume use. The tradeoff? Fast models are best suited for straightforward problems and may struggle with intricate reasoning or tasks requiring detailed analysis.
To put it simply: fast models are speedy and budget-friendly, while reasoning models provide thorough insights but require more time and resources.
Response times also vary significantly. Fast models can generate answers in seconds, making them perfect for live interactions or real-time collaboration. In contrast, reasoning models may take minutes to process complex queries, which could interrupt workflows like meetings or customer service exchanges.
| Aspect | Reasoning Models | Fast Models |
|---|---|---|
| Primary Strength | Deep analysis and solving complex issues | Quick and immediate responses |
| Response Time | Minutes for intricate tasks | Seconds for most queries |
| Cost | Higher due to intensive computation | Lower operational expenses |
| Ideal Use | Strategic decisions, detailed analysis | Routine tasks, real-time interactions |
| Accuracy | High for complex problems | Excellent for straightforward tasks |
| Resource Usage | Heavy computational requirements | Lightweight and efficient |
| Scalability | Limited by cost and processing time | Easily scalable for high-volume tasks |
This comparison highlights how each model fits into different workflows. For example, customer service teams might rely on fast models to handle initial queries quickly, escalating more complex issues to reasoning models. Similarly, financial analysts could use reasoning models for deep investment analyses while turning to fast models for quick data retrieval or formatting. These insights can also help optimize processes within Microsoft Teams and other enterprise tools.
Conclusion
Selecting the right model comes down to aligning it with the task at hand. To make the best choice, focus on three main factors: how complex the problem is, how quickly you need results, and what your budget allows.
For everyday tasks that demand quick responses – like answering customer questions, retrieving data, summarizing meetings, or formatting documents – fast models are your go-to option. They keep things running efficiently and cost-effectively, especially when managing a high volume of simple requests.
When it comes to strategic planning, detailed analysis, or tasks where accuracy is more important than speed, reasoning models are a better fit. These models ensure you get the depth and precision needed for more intricate challenges while making the most of your resources.
A smart approach combines both: fast models handle routine tasks, while reasoning models take over for more complicated issues. This hybrid strategy balances speed, accuracy, and cost, ensuring your workflows are both effective and economical.
Think about your team’s specific needs when choosing models. For instance, sales teams might rely on fast models for quick interactions, while research teams often require the depth of reasoning models. Luckily, Microsoft Teams makes it easy to switch between models, so you can adapt as needed.
Keep in mind that model selection isn’t static. Regularly reassess your needs to ensure your AI workflows stay productive, cost-effective, and free from unnecessary bottlenecks in your Microsoft Teams environment.
FAQs
How can I use reasoning and fast models together to improve workflows in Microsoft Teams?
To get the most out of Microsoft Teams with Copilot Studio, it’s crucial to know when to tap into reasoning models and when to rely on fast models. Each has its strengths: reasoning models excel at handling tasks that demand in-depth analysis, structured decision-making, or tackling more complex problems. On the other hand, fast models are your go-to for quick, straightforward tasks where speed is the main focus.
The real power lies in combining these models strategically within your workflow. For example, reasoning models are perfect for generating detailed reports or diving into data trends, while fast models shine when summarizing messages or automating routine actions. In Copilot Studio, you can even fine-tune workflows by specifying when reasoning models should kick in – just include keywords like "reason" in your agent instructions. This way, you ensure that the right tool is used at the right moment, streamlining processes and boosting productivity.
What are the cost differences between reasoning models and fast models in Copilot Studio?
Reasoning models, designed for handling more intricate AI tasks, come with a premium price tag. They fall under the Text and Generative AI Tools rate, costing $100 in Copilot Credits for every 10 responses. On the other hand, fast models, commonly used for streamlined agent flows, are billed at the Flow Actions rate, which tends to be more affordable. This pricing difference highlights the higher resource demands and advanced capabilities of reasoning models compared to the simpler, quicker workflows of fast models.
What’s the difference between how reasoning models and fast models handle incomplete or unclear data?
Reasoning models in Copilot Studio are designed to handle more intricate situations. They excel at working with incomplete or unclear data by constructing a detailed internal thought process. This approach leads to outputs that are more precise and carefully considered, making these models perfect for tasks that demand in-depth analysis or nuanced decision-making.
Fast models, in contrast, focus on speed and efficiency. They’re ideal for simpler tasks like quick edits, basic utility functions, or lightweight prototyping – essentially, situations where responsiveness takes precedence over detailed reasoning.
The choice between these models boils down to the nature of your task: opt for reasoning models when accuracy and depth are essential, and fast models when speed and simplicity are key.