Compare AI Calling Platforms
Bigly Sales, Synthflow, Bland AI, Retell AI, Vapi, Replicant, Smith.ai and Five9 compared on price, who builds the agent, outbound and inbound features, and TCPA compliance. Every competitor detail comes from that vendor's own website.
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This isn't a slide deck. In one 30-minute session our team sets up a real, professional calling system for your business and shows you the results while you watch.
We map your calls
Who you call, who calls you, what a good call sounds like, and where leads leak today. Inbound, outbound, or both.
1We build it live
Your AI agent, script and call flows set up for your business, plus the Bigly MCP so you can run campaigns from the AI tools you already use.
2You hear it work
A live call to your own phone, an analysis of your setup, and a straight answer on what it would do for your numbers.
3Included free
- Custom AI voice agent
- Outbound call flow
- Inbound call flow
- Script + objection handling
- Bigly MCP walkthrough
- Live test call
- Lead + call analysis
- TCPA compliance check
Like what you see? Your setup stays live when you choose any of our 5 plans. If not, no hard feelings.
How do AI calling platforms compare?
AI calling platforms differ most in who does the work. Developer platforms such as Vapi, Retell AI and Bland AI charge by the minute and leave the agent build, the phone setup and the compliance controls to your team. Enterprise platforms such as Synthflow, Replicant and Five9 sell custom contracts with no published price. Smith.ai is an answering service whose outbound calls are made by live agents. Bigly Sales is the fully managed option: published plans from $99 a month, outbound and inbound on one plan, and a team that builds, runs and keeps your AI calling compliant.
The table below compares all eight platforms on 19 points across pricing and setup, calling features and TCPA compliance. Every competitor detail comes from that vendor's own website, pricing page or documentation, read on 5 November 2026. Bigly Sales wrote this page and is one of the platforms compared.
What to look for in an AI calling platform
Six questions decide whether an AI calling platform actually works for your team. Ask every vendor the same six.
Who builds and runs it
Some platforms hand you an API and a builder. Others build the agent for you. Bigly Sales builds, runs and tunes your agents, scripts and campaigns.
Outbound and inbound
Many tools do one well and bolt on the other. Bigly runs outbound campaigns and answers inbound calls 24/7 on the same plan.
Compliance before the dial
Consent, Do Not Call and calling-hour checks should run before a number is dialed, not in a report afterwards. Bigly blocks the dial when there is no consent record.
CRM sync and handoff
Every call should land in your CRM and hot leads should reach a human with context. Bigly has 12 native CRM connectors and warm transfers.
Time to first call
Weeks of build time is weeks of leads going cold. Bigly builds a working system live in a free 30-minute setup.
Total cost, not the per-minute rate
A low per-minute price can hide model, voice, telephony and engineering costs. Bigly plans are all-in, from $99 a month for 500 minutes.
How Bigly Sales compares on price, setup and compliance
Eight AI calling platforms on pricing and setup, calling features and TCPA compliance. Bigly Sales is highlighted in green. "Not published" means we did not find it on the vendor's own site.
Swipe the table sideways to see every platform.
| Feature | Bigly Sales | Synthflow | Bland AI | Retell AI | Vapi | Replicant | Smith.ai | Five9 |
|---|---|---|---|---|---|---|---|---|
| Pricing and setup | ||||||||
| What it is | Fully managed AI outbound and inbound calling | Enterprise voice AI platform with its own telephony | Voice AI platform on its own models, API plus enterprise | Self-serve no-code and API voice agent platform | Developer API platform | Enterprise contact center AI agents | Answering service with AI, hybrid or human receptionists | Enterprise contact center platform with AI agents |
| Pricing model | Published monthly or annual plans billed in minutes, managed service included | Annual enterprise agreement, custom quote | Per minute; Build plan $299/mo | Pay as you go per minute; Enterprise custom | Platform fee per minute plus models and telephony at cost | Not published (pricing page removed) | Per call, AI and human plans | Not published (contact sales) |
| Lowest published price | $99/mo for 500 minutes (Scout) | Not published (no per-minute rate) | $0.14/min on Start ($0 platform fee) | From $0.07/min | $0.05/min platform fee | Not published | Free AI plan (25 calls); Pro $150/mo | Not published |
| Free plan, trial or setup | Free 30-minute live setup ($1,000 value) | No free plan or trial | Yes, Start plan with $0 platform fee | $10 free credits | $5 free credits | Not published (demo only) | Free AI plan, 25 calls a month | No (demo only) |
| Who builds and runs the agent | Bigly builds, runs and tunes it for you | Forward-deployed engineers if contracted, plus a visual builder | Self-serve; engineers build the first agent on Enterprise | Self-serve; optional engineering services | Your developers; embedded engineer on enterprise | Replicant's team builds; you edit after | Smith.ai configures it | Your team, in a no-code studio |
| Time to launch | Working system built live in 30 minutes; most teams go live in 1 to 2 weeks | In weeks | Two to six weeks for most agents | Minutes, per its site | Minutes; enterprise in about a week | In weeks | About 15 minutes for AI setup | New use cases in days, per its site |
| Dedicated account manager | Yes, on Hunter, Closer and Rainmaker | Yes, dedicated CSM | Not published | Named account manager on Enterprise | Named support team on Premier | Not published | Account manager on Enterprise | Not published |
| Calling features | ||||||||
| Outbound calling campaigns | Yes | Yes | Batch calls; its blog says cold-calling campaigns are not permitted | Yes, AI Dialer campaigns | Yes, Campaigns | Yes, outbound workflows | Live agents only, from $600/mo | Platform dialer; AI-agent outbound not published |
| Inbound call answering | Yes, 24/7 | Yes | Yes | Yes | Yes | Yes | Yes, core service | Yes |
| Live transfer to a human | Yes, warm transfer with context | Yes, warm transfer | Yes, Enterprise only | Yes | Yes, warm or blind | Yes, warm hand-off | Yes, warm transfer | Yes, with context |
| SMS follow-up | Yes | Yes | Yes, Enterprise only | Yes | Yes | Yes | Yes (paid add-on on front desk plans) | Yes |
| CRM integrations | 12 native CRMs incl. Salesforce and HubSpot, plus any API or webhook | Salesforce, HubSpot, Freshworks | Salesforce, HubSpot | Salesforce, HubSpot, Dynamics 365, GoHighLevel, Zoho | Salesforce, HubSpot, Zendesk, GoHighLevel | Salesforce, Zendesk, ServiceNow, Kustomer, Gladly | Salesforce, HubSpot, Clio, MyCase, HighLevel | Salesforce, ServiceNow, Dynamics 365, Zendesk |
| Bring your own phone system (SIP) | Yes, forward from your phone system or SIP trunk | Yes, any SIP, Twilio or BYOC | Yes, own carrier or SIP trunk | Yes (Twilio, Telnyx, Vonage) | Yes, bring your own SIP trunk | Runs on your existing phone system | Not published | Not published |
| MCP server for Claude and ChatGPT | Yes, all customers (Claude, ChatGPT) | Yes | Yes | Yes | Yes | Not published | Not published | Not published |
| Compliance (TCPA) | ||||||||
| Consent check before every dial | Yes. No consent record, no dial | Not published | Consent gates described for SMS | Not verified by the platform, per its docs | Mentioned on an industry page; not documented | Not published | Not published | Consent management in the dialer |
| Do Not Call scrubbing | Federal, state and internal lists, every campaign | Not published | DNC honored (stated) | Optional scrubbing; only the internal list is on by default | Mentioned on an industry page; not documented | Not published | Not published | DNC lists in the dialer |
| Calling hours by recipient time zone | Enforced automatically by recipient location | Calling windows follow the agent's time zone | Quiet hours described for SMS; voice not published | Optional windows from area code; legal hours not enforced, per its docs | Mentioned on an industry page; not documented | Not published | Not published | Time-zone dialing in the dialer |
| AI disclosure as a platform setting | Yes, on every campaign | Customer-configured greeting | Not published | Not published | Not published | Not published | Configurable greeting; never claims to be human | Yes, admin-configurable AI notices |
| Call recordings and transcripts | Every call, synced to your CRM | Yes | Yes, with redaction options | Yes | Yes | Yes, redacted | Yes on AI plans | Transcripts yes; recording not stated |
Updated 5 November 2026. Every competitor cell comes from that vendor's own website, pricing page or documentation, read that day; "Not published" means we did not find it there. Bigly Sales figures are our live published plans. Plans and features change, so confirm anything decision-critical with each vendor before you buy.
What each platform leaves for your team to do
Every alternative trades a lower entry price, a self-serve builder or a bigger platform for work that moves to your team. Here is what that work is, platform by platform, from each vendor's own documentation. Bigly Sales runs the whole operation for you.
Synthflow
An annual contract before you start, with no published price and no trial. Its calling windows follow the agent's time zone and its documentation describes no consent or Do Not Call tooling, so those TCPA controls sit with your team.
Bland AI
Your team builds and runs agents on a per-minute API. Warm transfer and SMS are Enterprise-only, and Bland's own blog says cold-calling campaigns are not permitted on the platform.
Retell AI
Your team builds the agent and pays per-minute components. Its documentation says the platform does not verify consent or enforce legal calling hours, and Do Not Call scrubbing beyond your internal list is opt-in.
Vapi
Your developers build the agent, choose the models and carriers, and wire up compliance. Calling-hour, consent and Do Not Call handling are mentioned on an industry page but not documented.
Replicant
A customer service automation platform with no published pricing. Its site publishes no consent, Do Not Call or calling-hour controls for outbound sales calls.
Smith.ai
An answering service first. Outbound calling is done by live agents on a separate plan from $600 a month, so AI outbound campaigns are not part of the AI receptionist.
Five9
A full contact center platform your team configures in its studio, with no published pricing. Its consent, Do Not Call and time-zone tools belong to the outbound dialer rather than the AI agents.
What every Bigly Sales plan includes
One managed service, priced in minutes, with nothing left for your team to build.
Built and run for you
Your AI agent, scripts, phone numbers and campaigns are set up and tuned by the Bigly team. No developers, no prompt engineering.
Published, all-in pricing
Five plans from Scout at $99 a month to Rainmaker at $9,999, billed in minutes. Save 30% on annual plans. Numbers are $2 each.
Outbound and inbound on one plan
Call new leads back in seconds, work aged lists, and answer your inbound line 24/7 from the same minutes.
A compliance gate on every dial
Consent verified before the call connects, federal, state and internal Do Not Call scrubbing, calling hours by recipient location, and AI disclosure on every campaign.
CRM sync and warm transfers
HubSpot, Salesforce, Zoho, Pipedrive, GoHighLevel and 7 more native connectors. Hot leads transfer live to your team with the context on screen.
Run it from Claude or ChatGPT
The Bigly MCP server lets you add leads, check minutes and see who wants a callback from the AI assistant you already use.
Want to see it before you compare further? In a free 30-minute session we build a working inbound and outbound AI calling system for your business, live, including a test call to your own phone. Claim your free setup.
Detailed one-on-one comparisons
Each page compares pricing at the same monthly volume, setup, inbound and outbound coverage, and compliance.
AI calling platform comparison questions
Common questions from teams choosing between AI calling platforms.
How do AI calling platforms compare?
They differ most in who does the work. Developer platforms such as Vapi, Retell AI and Bland AI charge by the minute and leave the build, phone setup and compliance controls to your team. Enterprise platforms such as Synthflow, Replicant and Five9 sell custom contracts with no published price. Smith.ai is an answering service whose outbound calls are made by live agents. Bigly Sales is fully managed, with published plans from $99 a month covering outbound and inbound.
How much do AI calling platforms cost?
Published entry prices as of 5 November 2026: Bigly Sales from $99 a month for 500 minutes, all-in; Vapi a $0.05 per minute platform fee plus models and telephony; Retell AI from $0.07 per minute; Bland AI $0.14 per minute on its Start plan; Smith.ai a free AI plan for 25 calls and Pro at $150 a month. Synthflow, Replicant and Five9 do not publish pricing. Per-minute platforms add model, voice, telephony and engineering costs on top.
Which AI calling platforms publish their pricing?
Bigly Sales, Bland AI, Retell AI, Vapi and Smith.ai publish prices on their websites. Synthflow sells annual enterprise agreements, Replicant's pricing page has been removed, and Five9 asks you to contact sales.
Which AI calling platforms enforce TCPA compliance for you?
Bigly Sales verifies consent before every outbound dial, scrubs federal, state and internal Do Not Call lists, enforces calling hours by the recipient's location and discloses that the caller is AI on every campaign. Among the others, Retell AI's documentation says it does not verify consent or enforce legal calling hours, Synthflow's calling windows follow the agent's time zone, Vapi mentions compliance features without documenting them, and Five9 keeps its consent and DNC tools in its outbound dialer. See our TCPA-compliant AI calling platforms comparison for more detail.
Do I need developers to run AI calling?
Not with Bigly Sales. The Bigly team builds the agent, scripts, call flows, CRM connection and compliance checks for you. Developer platforms such as Vapi, Retell AI and Bland AI expect your team to build and maintain the agent and its integrations.
Can one platform handle both outbound and inbound calls?
Yes. Bigly Sales runs outbound campaigns and answers inbound calls 24/7 on the same plan and minutes, with warm transfers to your team and every call written back to your CRM. Smith.ai, by comparison, is an answering service whose outbound calling is done by live agents on a separate plan.
Which AI calling platforms have an MCP server?
Bigly Sales, Synthflow, Bland AI, Retell AI and Vapi publish MCP servers. We found none for Replicant, Smith.ai or Five9. Bigly's MCP server is available to all customers and works with Claude and ChatGPT.
How quickly can I go live with Bigly Sales?
In a free 30-minute setup session, worth $1,000, the Bigly team builds a working inbound and outbound AI calling system for your business live, including a test call to your own phone. Most teams go live in 1 to 2 weeks, and the setup stays live when you choose any of the five plans.
How was this comparison researched?
Every competitor detail was taken from that vendor's own website, pricing page or documentation on 5 November 2026, not from review sites. "Not published" means we did not find it there. Bigly Sales wrote this page and is one of the platforms compared, so confirm anything decision-critical with each vendor.
Checking compliance specifically? See our TCPA-compliant AI calling platforms comparison and the TCPA compliance guide.
Stop Building. Start Calling.
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