Written by: Rebecca Young
Published: 16 December, 2025
If you’ve been exploring HubSpot Breeze AI, you’ve probably noticed the built-in Breeze Assistant. It’s helpful for quick tasks, but let’s be honest. It’s a little vanilla. Think of it as the default assistant you get out of the box: competent, but not tailored to your brand or your specific goals.
That’s where creating a custom HubSpot Breeze AI Assistant comes in. By building your own, you can make an assistant that truly works for you, understands your brand voice, knows your competitors, and even focuses on specific areas like SEO, email campaigns, or content creation.
Here’s how custom Breeze Assistants work, why they’re worth the effort, and where we typically see the most value.
A HubSpot Custom Breeze Assistant is essentially your very own AI helper inside HubSpot that you can train and tailor. Unlike the default Breeze AI Assistant that comes preloaded with general knowledge, a custom assistant allows you to upload data, set goals, and give it context about your business. That might include brand guidelines, campaign history, competitive insights, or internal processes.

Currently, this feature is accessible to HubSpot users who have access to Breeze AI in their plan. If you’re unsure whether your account includes it, check with your HubSpot rep or your account settings under the AI tools section. Creating a custom assistant is ideal for marketing teams, content creators, and anyone looking to get more precise, actionable insights from HubSpot’s AI tools.
This feature is especially useful for teams that live in HubSpot every day. Marketing, sales, service, and operations teams all benefit because the assistant works directly where their data already lives, instead of forcing them to jump between tools.
The default Breeze Assistant is great for general tasks, but it’s not tailored to your brand, your audience, or your business goals. When you create a custom HubSpot Breeze AI Assistant, you’re essentially building an AI team member who knows your business inside and out.
Some of the key advantages include:
If you’re already investing in Breeze Intelligence, custom assistants are where you start to see real value.
When it comes to building your own Breeze AI Assistant, the key is in the details. Here are a few best practices we recommend:
Following these best practices ensures your assistant is not just smart but also relevant and practical.
Building your own HubSpot Breeze AI Assistant is straightforward. Here’s a simple roadmap:

Once it’s live, the assistant becomes part of your day-to-day HubSpot experience, supporting campaigns, conversations, and reporting.
If you’re wondering where to begin, here are a few ideas for HubSpot Breeze Assistants you can create:
This assistant helps teams stay aligned on keyword focus, content priorities, and on-page optimization. For example, when you’re ready to prompt it to create new content, it can focus on your high-level keywords and optimize your page based on your overall SEO strategy.
An email-focused assistant can help draft subject lines and copy that stays on brand. It can also reference past performance and messaging, so it can recommend options that had the best overall engagement.
For sales teams, this is one of the highest-impact use cases. A custom assistant can summarize calls, highlight key points, and suggest follow-up steps. It could also help generate post-call messages to clients. It helps reps focus on conversations instead of note-taking and makes CRM data more useful.
Support and onboarding teams often answer the same questions repeatedly. A service-focused assistant can provide setup steps, FAQs, and internal documentation quickly, so your rep doesn’t have to scramble looking for answers. This improves response time and creates a more consistent customer experience.
This assistant helps teams interpret reports and dashboards by translating performance data into insights. It’s especially helpful for people who don’t live in HubSpot reports every day.
Starting with one or two focused assistants makes it easier to see value and expand from there.
The default Breeze Assistant is a helpful starting point, but custom assistants are where HubSpot AI becomes genuinely useful. With the right context and focus, a custom Breeze Assistant can support marketing, sales, and operations in a way that actually reflects how your business works.
If you want help setting up custom Breeze Assistants that actually deliver value, reach out to our team. We’ll help you define the right use cases and build assistants that support your goals.
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