AI SUPPORTSOFTWAREBrowse 30 tools 
Side-by-side comparison
Compare audience fit, channels, integrations, knowledge sources, public pricing information, and operational considerations.
Both products appear in ai support agents. That overlap gives you a starting point; it does not mean the products cover the same channels, workflows, or deployment model.
HubSpot's AI customer agent for resolving support conversations within its CRM and Service Hub.
Teams already using HubSpot CRM that want support automation tied to contact and ticket records.
Explore its buying criteria: AI support agents · AI help desks.
Full HubSpot Breeze profile and vendor sources · Checked 2026-09-02
Developer platform for building, testing, deploying and monitoring production voice and chat agents.
Developers and startups building phone agents with APIs, webhooks and custom logic.
Explore its buying criteria: AI support agents · Voice and contact-center AI · Agent builders.
Full Retell AI profile and vendor sources · Checked 2026-09-02
The table below preserves each vendor’s scope and qualifiers. An unlisted feature is unverified here; it is not a claim that the feature is unavailable.
Before you decide
HubSpot Breeze: Service Hub subscription plus shared HubSpot Credits. Professional includes 3,000 monthly credits and requires $1,500 onboarding; Enterprise includes 5,000 and requires $3,500 onboarding. Other credit-consuming features share the allowance. Paying monthly does not remove the annual commitment. Retell AI: Voice cost combines infrastructure, speech, model, telephony and optional per-minute features. Chat is charged per AI message. Phone numbers cost $2/month; 20 concurrent calls are included, with additional concurrency $8/month each. Use the selected configuration to estimate the monthly bill. Ask both vendors to quote the same expected workload, required channels, and implementation scope. Include required subscriptions and usage charges before comparing the total; the listed starting prices alone may cover different work.
The recorded sources for HubSpot Breeze include HubSpot knowledge base; CRM records; tickets; website content. For Retell AI, they include prompts; documents/knowledge bases; API tools; business systems. Ask each vendor to demonstrate ingestion or live access for the exact system you use, with permissions and refresh behavior. A source missing from this directory is not proof that a vendor cannot support it.
Use the same sample of real support requests, approved knowledge, and escalation rules in both pilots. Can it cite or restrict answers to approved knowledge? What happens when the agent is uncertain? Which actions can it complete beyond answering? Record answer quality, completed tasks, human handoffs, and total cost in the buyer worksheet. Check these specific cautions before launch: HubSpot Breeze: AI usage consumes credits and higher-tier Service Hub features may be required. Retell AI: Telephony, model, speech and other provider costs may be separate; technical integration work is expected.
Record your requirements and pilot results in the buyer worksheet →
On a small screen, swipe the table to compare both products.
| Criterion | HubSpot Breeze | Retell AI |
|---|---|---|
| Best fit | Teams already using HubSpot CRM that want support automation tied to contact and ticket records. | Developers and startups building phone agents with APIs, webhooks and custom logic. |
| Key capabilities | CRM-aware answers, ticket automation, knowledge grounding, handoff, Breeze actions | voice agent builder, drag-and-drop flows, call transfer, DTMF, transcripts, simulation testing, webhooks |
| Company sizes | small, mid-market, enterprise | small, mid-market, enterprise, developer/startup |
| Channels | live chat, email, help desk, knowledge base | phone, web chat, SMS, telephony |
| Integrations | HubSpot CRM, Service Hub, Slack, marketplace apps, custom objects/APIs | telephony providers, webhooks, REST APIs, CRM/helpdesk via APIs |
| Knowledge sources | HubSpot knowledge base, CRM records, tickets, website content | prompts, documents/knowledge bases, API tools, business systems |
| Pricing model | Service Hub subscription plus shared HubSpot Credits. Professional includes 3,000 monthly credits and requires $1,500 onboarding; Enterprise includes 5,000 and requires $3,500 onboarding. Other credit-consuming features share the allowance. Paying monthly does not remove the annual commitment. | Voice cost combines infrastructure, speech, model, telephony and optional per-minute features. Chat is charged per AI message. Phone numbers cost $2/month; 20 concurrent calls are included, with additional concurrency $8/month each. Use the selected configuration to estimate the monthly bill. |
| Pricing summary | Service Hub Professional or Enterprise route requires an annual commitment. Customer Agent uses 50 HubSpot Credits per resolved conversation; extra credits are $10/1,000, equivalent to $0.50/resolution before platform costs. | Pay as you go: advertised voice range $0.07–$0.31/minute and chat from $0.002/message (USD). No base subscription commitment; selected models, telephony and add-ons can increase the total. Enterprise is quoted. |
| Free plan or trial | 14-day unlimited Customer Agent trial with purchase of at least one eligible Service Hub Professional or Enterprise seat. Free and Starter do not include this agent route. | $10 in free credits to build and test; pay-as-you-go access has no commitment. |
| Differentiator | Native CRM context and workflow automation for HubSpot customers. | Transparent usage entry point and production-oriented voice tooling for developers. |
| Considerations | AI usage consumes credits and higher-tier Service Hub features may be required. | Telephony, model, speech and other provider costs may be separate; technical integration work is expected. |
Teams already using HubSpot CRM that want support automation tied to contact and ticket records.
Native CRM context and workflow automation for HubSpot customers.
Developers and startups building phone agents with APIs, webhooks and custom logic.
Transparent usage entry point and production-oriented voice tooling for developers.
Verify current pricing, limits, security, and required integrations directly with each vendor before purchasing.