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Head-to-head · AI Agent Marketplaces

HubSpot Agent Builder vs GPT Store

  • Updated Oct 2026
  • Both researched from official sources
  • 2 checks side by side
Higher score HubSpot Agent Builder #5 in AI Agent Marketplaces 8.6/10 Paid ✓ 0 of 1 features Visit HubSpot
GPT Store #6 in AI Agent Marketplaces 8.5/10 Free plan Free plan✓ 0 of 1 features Visit GPT Store

HubSpot Agent Builder leads on 0 checks, GPT Store on 1, and 1 is even. Who comes out ahead on the 2 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreHubSpot Agent Builder · 8.6/10
  • Free planonly GPT Store

HubSpot Agent Builder scores higher on our rubric for ai agent marketplaces: 8.6 against 8.5 out of 10; our editors rank them #5 and #6.

GPT Store offers free plan; HubSpot Agent Builder doesn't. On publishing access, HubSpot Agent Builder gives you Invite_only where GPT Store offers Reviewed. On transaction model, HubSpot Agent Builder gives you Usage_based where GPT Store offers Free.

HubSpot Agent Builder is the better fit for hubSpot customers extending CRM workflows. GPT Store is the better fit for free no-code GPT discovery and creation.

  • HubSpot Agent Builder fits best

    HubSpot customers extending CRM workflows

  • GPT Store fits best

    Free no-code GPT discovery and creation

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature HubSpot Agent Builder 8.6/10 Visit ↗ GPT Store 8.5/10 Visit ↗
At a glance
Editor score 8.6 8.5
Ranking #5 in AI Agent Marketplaces #6 in AI Agent Marketplaces
Best for HubSpot customers extending CRM workflows Free no-code GPT discovery and creation
Pricing model Paid Free plan + paid
Starting price — —
Free plan — ✓ (best)
Free trial — —
Deployment Cloud Cloud, Mobile
Platforms Web Web, iOS, Android
Support Live chat, Docs Docs
Built for Small business, Mid-market, Enterprise Solo, Small business, Mid-market, Enterprise
Features HubSpot Agent Builder 0/1 · GPT Store 0/1
API access Not checked yet —
Specs
Agent types Customer, prospecting, data, content, closing, and custom agents specialized-purpose GPTs; no-code assistants; GPTs with knowledge, capabilities, apps, or API actions
Install channels HubSpot Agent Marketplace, HubSpot Agent Hub, workflows, automations, CRM cards ChatGPT web; direct GPT links; iOS app; Android app
Publishing access Invite_only Reviewed
Transaction model Usage_based Free
Listed agent count Not checked yet Not checked yet
Our review
Pros
  • Visual builder supports instructions, actions, knowledge, inputs, and context
  • Runs agents from workflows, automations, and CRM cards
  • Marketplace agents can be installed and customized in HubSpot
  • Browse public GPTs through Explore GPTs or direct links
  • Add instructions, knowledge files, capabilities, and conversation starters
  • Support actions connecting GPTs to apps or external APIs
Cons
  • Publishing access is invite-only
  • Custom-built agents cannot be listed in the Agent Marketplace
  • Integration coverage centers on HubSpot CRM and related tools
  • New GPT creation and publishing are unavailable on personal accounts
  • Public publishing requires automated sharing and policy checks
  • OpenAI plans to retire custom GPTs, beginning with Enterprise on December 11, 2026
Our verdict

HubSpot Agent Builder is a paid visual builder for creating custom AI agents and workflows inside HubSpot. Teams can configure instructions, actions, knowledge, inputs, and data access using CRM data, customer conversion data, files, and…

Read the review →

GPT Store is OpenAI’s marketplace-style directory for discovering specialized GPTs inside ChatGPT. It suits people who want to browse purpose-built assistants, open public GPT pages, and chat with accessible GPTs after signing in. The…

Read the review →
  1. HubSpot Agent BuilderAI Agent Marketplaces 8.6Paid
  2. GPT StoreAI Agent Marketplaces 8.5Free plan

Strengths and trade-offs

  • HubSpot Agent Builder — where it wins

    • Visual builder supports instructions, actions, knowledge, inputs, and context
    • Runs agents from workflows, automations, and CRM cards
    • Marketplace agents can be installed and customized in HubSpot

    Where it doesn't

    • Publishing access is invite-only
    • Custom-built agents cannot be listed in the Agent Marketplace
    • Integration coverage centers on HubSpot CRM and related tools

  • GPT Store — where it wins

    • Browse public GPTs through Explore GPTs or direct links
    • Add instructions, knowledge files, capabilities, and conversation starters
    • Support actions connecting GPTs to apps or external APIs

    Where it doesn't

    • New GPT creation and publishing are unavailable on personal accounts
    • Public publishing requires automated sharing and policy checks
    • OpenAI plans to retire custom GPTs, beginning with Enterprise on December 11, 2026

More comparisons

All AI agent marketplaces comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update