Day AI vs HubSpot (2026)

The agents write into outside systems as well as reading from them. A hubspot.sync tool pushes contact, company and deal data into HubSpot once a person approves, Salesforce, Gong, Gmail, Calendar, Slack and Zoom are named sources, and Zapier gives a route to systems Day AI has no connector for.

Sourceday.ai/productread 2026-10-01

Beyond the CRM itself, agents and assistants reach emails, calendars, shared documents and team conversations in Google Workspace, Microsoft 365 and Slack. Other named connections include LinkedIn Sales Navigator and CRM Sync, WhatsApp, Facebook Messenger, Google Search Console, ad conversion events synced to ad accounts, connected social accounts, HubSpot-provided telephone numbers and a Custom Channels API for building further channels.

The HubSpot Marketplace is the general route for connecting third-party apps across productivity, messaging, advertising, social, telephony and sales tools, though no count of marketplace apps is published. Prebuilt agents ship with default tools that cannot be edited or rearranged, which limits how one agent is configured, not how broadly the platform integrates.

Sourcehubspot.com/products/artificial-intelligence/breeze-ai-assistant, hubspot.com/pricing/suite and ecosystem.hubspot.com/marketplace/appsread 2026-09-02

Every agent can create and run workflows, and reusable skills such as an objection handling coach are deployed across many agents at once, so multi step work runs on a structure the customer configures, not one prompt at a time.

Sourceday.ai/productread 2026-10-01

The agent builder, formerly Breeze studio, builds custom agents and agentic automation on one canvas, from simple triggers to complex AI tasks, and HubSpot defines agents as components that follow defined steps to complete structured tasks using the customer's data and tools.

Agents hand work to each other across the lifecycle, with the campaign agent planning a campaign, the content agent creating it and the nurture agent converting it, and the knowledge base agent requires an active customer agent subscription because the two work together.

Underneath sits the workflow engine, with up to 300 workflows on Professional and 1,000 on Enterprise, omni-channel automation, sequences triggerable from workflows and workflow health monitoring.

Sourcehubspot.com/products/artificial-intelligence, knowledge.hubspot.com/ai/understand-breeze and hubspot.com/pricing/suiteread 2026-09-02

Work starts without a person asking. Workflows run on schedules, such as a daily 9:00 run, and on event triggers, and capture runs on meetings, email, Slack messages, calendar events and call completion as they happen.

Sourceday.ai/productread 2026-10-01

Channels include live chat, conversational bots, Facebook Messenger, WhatsApp, one-to-one and marketing email, calling with HubSpot-provided numbers and interactive voice response, social posting across connected accounts, and a Custom Channels API for channels HubSpot does not ship. Work also reaches agents automatically.

The prospecting agent watches accounts for buying signals and reaches out when one appears, sales automation triggers tasks and notifications when deals change stage, sequences can be triggered from workflows, and custom events, up to 500 definitions on Enterprise, feed the automation layer.

Sourcehubspot.com/pricing/suite and hubspot.com/products/artificial-intelligenceread 2026-09-02

The context graph is built over the customer's own record. It holds meeting recordings and transcripts, email threads, opportunities, enrichment and quotes with enterprise level permissioning, and it answers natural language questions across them, such as every demo the team ran this week.

Sourceday.ai/productread 2026-10-01

Agents run on the Smart CRM record itself, so output is grounded in live customer data from day one with no setup, and the data agent answers custom questions about any contact or company from CRM data, calls, emails and documents. Knowledge vaults store reference information that agents and custom assistants draw on, including internal documentation, product details and process guidelines. The customer agent also searches the knowledge base, up to 10,000 articles on the top tier, and past contact and contract history before answering.

Sourceknowledge.hubspot.com/ai/understand-breeze, hubspot.com/products/artificial-intelligence and hubspot.com/pricing/suiteread 2026-09-02

Day AI names its memory layer, Customer Memory, as a product surface, and the company's premise is that the full conversational record persists instead of being compressed into CRM fields. What was said, promised and decided stays available across meetings, email and Slack, and the assistant reads it back to track commitments and prompt owners when timing matters.

Scope is the customer relationship and is addressable through natural language and through MCP tools that reach meeting transcripts and objects. Lifetime is governed by the published data policy covering retention and deletion. The context graph is what the agent retrieves to answer, while Customer Memory is what persists between engagements.

Sourceday.ai/product Customer Memory and day.ai/dataread 2026-09-01

Breeze Assistant keeps memories for each user, such as name, job title, tone, writing style and recurring instructions, which the user adds or removes by instruction and can view and delete one by one under Memories. Breeze projects store chats, shared instructions and reference files, the assistant automatically stores relevant information as context for future chats, and access can be shared with chosen users. No lifetime or retention is stated for either.

Sourceknowledge.hubspot.com/ai/use-breeze-assistantread 2026-09-30

A workspace setting requires a person's approval before the agent pushes data to an external CRM, shown in the product as the agent asking before it pushes to HubSpot, and outbound email is drafted for a person to send. That approval shows as product behavior, and no settings reference covers it.

Sourceday.ai/productread 2026-10-01

Prospecting agent output is approved, not sent automatically, with the customer approving CRM updates and follow-up drafts after every meeting. Knowledge base agent output is reviewed, edited and approved before publication, and the customer agent escalates to a person when needed.

Email approvals, social media approvals and pipeline approvals for deals are tier-gated features. Admins manage which data AI features can access and can turn that access off for the whole account, and a user who lacks permission on the features an agent depends on cannot run it, so an agent never exceeds the authority of the person running it.

Sourcehubspot.com/products/artificial-intelligence, hubspot.com/products/service/ai-knowledge-base-agent and hubspot.com/pricing/suiteread 2026-09-02

The trust center offers a SOC 2 Type II report to customers and prospects under NDA through a request form, and Day AI describes a maintained information security program.

Its named controls cover encryption of data at rest and in transit, access controls, a published subprocessor list, a data policy covering retention, location and deletion, and a signable data processing addendum, alongside terms and an acceptable use policy.

Access control for customers works through the MCP setup, where data access follows workspace role, capabilities follow the paid agent tier, and a customer can revoke a connected agent's tokens from workspace settings.

Sourceday.ai/trust and day.ai/mcpread 2026-09-01

The Trust Center provides SOC 2 Type II and SOC 3, with no NDA required for SOC 3, backed by annual third-party audits, penetration testing, a formal vulnerability management process and a Bugcrowd disclosure program.

Controls include SAML-based single sign-on with Okta, Azure AD and OneLogin, SSO that can be enforced for all users with configurable exemptions, SCIM provisioning through Okta for onboarding and deprovisioning, a permissions model spanning users, teams, CRM objects, properties and security settings, a Security Center for 2FA enforcement, inactive-user audits and partner access control, and Sensitive Data properties with application-layer encryption and field-level access controls. Permissions carry through to agents, so a user who lacks access to the features an agent depends on cannot run it.

Sourcehubspot.com/security-and-compliance and knowledge.hubspot.com/ai-tools/customize-breeze-agentsread 2026-09-02

Day AI says records created, updated and managed through its MCP server have all changes tracked and audited, and the product is built so a person can see what the agent wrote and override it. There is no run history, activity log view, decision trace or retention period for that audit, and the statement covers the MCP path, not the automatic capture that writes most of the record. That matters because the agent writing the system of record unattended is the product.

Sourceday.ai/mcp and day.ai/productread 2026-09-01

Agent Hub tracks what every agent is doing and delivering in a single view with live status and real outcomes per agent, and the Breeze dashboard reports how AI features are used across the account. Audit logging is part of the permissions model and covers sensitive-data access. HubSpot publishes model cards in its AI Trust Center that explain how each AI feature works, what data it uses and what safeguards apply. No per-run trace of an agent's reasoning steps is described.

Sourcehubspot.com/products/artificial-intelligence, knowledge.hubspot.com/ai/use-breeze and hubspot.com/security-and-complianceread 2026-09-02

Day AI runs in the cloud only, with nothing the customer selects. There is no region choice, VPC, private tenancy, self-hosted or on-premises option. The data policy covers how long data is retained and how it is stored, handled and deleted, but not where customer data is hosted.

Sourceday.ai/trust, day.ai/data and day.ai/mcpread 2026-09-01

Accounts are hosted in regional data centers in the United States, the EU, Canada and Australia, and paid accounts can migrate to a preferred region, with guidance on how regional hosting works and the limited cases where processing happens outside the hosting location. The Data Processing Agreement, with SCCs and Data Privacy Framework coverage, sits alongside the region choice. Hosting is multi tenant cloud only, with no VPC, on-premises or customer-tenant deployment.

Sourcehubspot.com/security-and-compliance and legal.hubspot.com/securityread 2026-09-02

Each customer gets a single AI assistant it names for itself, and the CRM, meeting assistant and knowledge base arrive as one product, with no catalog, template gallery or named set of prebuilt agents. What it does offer is developer-shaped. The SDK ships three production-ready templates for desktop, mobile and serverless applications, and a second public repository, the Operations Harness, is offered for adoption.

Sourceday.ai/mcp SDK templates and day.ai/productread 2026-09-01

The HubSpot Marketplace is where customers discover, browse and install agents, and Agent Hub shows every agent in one view, where a customer can turn on any not yet activated with a click.

Generally available agents include content, prospecting, customer, data, campaign, nurture and revenue agents, and ABM landing page, blog research, closing, company research, cross-sell and upsell, customer health, deal loss, request for proposal and sales-to-marketing feedback agents are also listed, several in beta. Featured agents are recommendations a customer can download and modify.

Prebuilt agents come with default inputs, instructions and tools that cannot be edited, deleted or rearranged, so adopting one means switching it on, not forking it, and certain agents can no longer be installed, though which ones is not listed.

Sourcehubspot.com/products/artificial-intelligence, knowledge.hubspot.com/ai/understand-breeze and knowledge.hubspot.com/ai/use-breezeread 2026-09-02

Which models power the agents is not published, and the customer has no model choice.

Sourceday.ai/productread 2026-10-01

Customers cannot choose the model, and the providers are not named. HubSpot refers to third-party AI providers in general terms, saying they must contractually meet its security and privacy standards, process data only to deliver the requested feature and cannot train their models on customer data.

Admins can control what those providers may access and can opt out of HubSpot's own model improvement. There is no model selector, per agent model choice, bring your own key option or routing policy, so control covers data access, not which model runs. HubSpot publishes model cards for each AI feature in its AI Trust Center.

Sourcehubspot.com/security-and-compliance and hubspot.com/products/artificial-intelligenceread 2026-09-02

Day AI publishes an open SDK at github.com/day-ai/day-ai-sdk with an importable client, OAuth handling, a full MCP client and three production-ready templates covering Electron desktop, React Native mobile and Vercel serverless, and the site footer links it as API and SDK alongside a second public repository, the Operations Harness at github.com/day-ai/gtm-brain. Beside it runs an MCP server at day.ai/api/mcp over HTTP with OAuth 2.0, install paths for Claude, Cursor and Claude Code, a listing in the Claude connector directory, and more than twenty tools spanning object search, contact and opportunity creation, meeting transcript access, email drafting and notifications, with permissions inherited from agent tier and workspace role and tokens revocable from workspace settings.

Sourceday.ai/mcp and github.com/day-ai/day-ai-sdkread 2026-09-01

Developers get a full platform at developers.hubspot.com, with REST APIs generated from OpenAPI specifications and the spec served at a public endpoint, maintained client libraries including Node, public apps that authenticate by OAuth and private apps by access token, a Webhooks Journal API with batched reads and CRM object filtering, date-based versioned APIs, UI extensions with serverless functions, a CLI and an app marketplace.

Two MCP servers ship alongside, a hosted remote server at mcp.hubspot.com with read and write access to CRM objects over OAuth with PKCE, managed through MCP auth apps, and a local developer MCP server for building apps and CMS assets from an AI code editor. Product-side surfaces include a Custom Channels API and a marketing email single send API.

Sourcedevelopers.hubspot.com/ai-tools, developers.hubspot.com/docs/api/client-libraries and developers.hubspot.com/spotlightread 2026-10-01

The product has agents, workflows, skills, memory, MCP and an SDK, but no testing or evaluation tooling for agents.

Sourceday.ai/productread 2026-10-01

After a configuration is generated, the customer adjusts instructions, adds actions and tests the agent before publishing it. A/B testing on marketing email, custom reporting, workflow health monitoring on the higher tiers and the per-agent performance view in Agent Hub sit alongside. No score, pass rate, judge verdict or other comparable result comes out of that test, and no sandbox, replay, regression suite or evaluation harness over agent behavior is described.

Sourcehubspot.com/ai/create-agents-with-breeze-assistant and hubspot.com/pricing/suite; knowledge.hubspot.com/ai/create-agents-with-breeze-assistantread 2026-09-02

Browser or computer control is not part of the product, which covers agents, workflows, skills, memory, MCP and the SDK.

Sourceday.ai/productread 2026-10-01

Every action runs through a programmatic route. Agents act on the Smart CRM and reach third-party systems through integrations, the marketplace and APIs, and the developer MCP server drives an AI code editor, not a browser. No agent is described operating software through its interface, controlling a browser or navigating a third-party console where no programmatic route exists.

Sourcehubspot.com/products/artificial-intelligence and developers.hubspot.comread 2026-09-02