Best AI tools to aI phone agents for outbound calls

Short answer

Retell AI ranks #1 for aI phone agents for outbound calls (score 8.9/10). Pricing: From $2.00/month as listed; free tier: yes. Runners-up: Bland AI, Synthflow.

Top 5, ranked by our published rubric. Sponsorship never affects the order. Last updated 2026-10-13.

Compare the top 5 side by side

#	Tool	Score	Pricing	Paid from	Free tier	What it is
1	Retell AI	8.9	Free tier	From $2.00/month as listed	yes	AI voice agents for calls
2	Bland AI	8.6	From $299	From $299/month as listed	Unverified	AI phone calling agents
3	Synthflow	6.8	From $30,000	From $30,000/yr (contract)	Unverified	No-code AI voice agents
4	Vapi	6.4	From $29	From $29/month as listed	Unverified	Voice AI agent platform for developers
5	Aircall	5.6	From $100	From $100/month as listed	Unverified	Cloud phone system for teams

Rank 1

Retell AI

Free tierVisit Retell AI (opens in a new tab)

AI voice agents for calls

Score 8.9/10Paid from: From $2.00/month as listedFree tier: yesLast verified 2026-10-13

Why ranked: Its own site says: “Deploy AI voice agents in minutes for inbound and outbound calls.” We placed it 2nd of 5 on fit for this task. Free tier; paid from From $2.00/month as listed.

Fit 8.5 · value 10.0 · breadth 8 · availability 10 (how we score) · pricing source · site live

Rank 2

Bland AI

From $299Visit Bland AI (opens in a new tab)

AI phone calling agents

Score 8.6/10Paid from: From $299/month as listedFree tier: UnverifiedLast verified 2026-10-13

Why ranked: Its own site says: “Build, deploy, and monitor AI voice agents that sound human.” We placed it 1st of 5 on fit for this task. No free plan confirmed; paid from From $299/month as listed.

Fit 10.0 · value 4.4 · breadth 10 · availability 10 (how we score) · pricing source · site live

Rank 3

Synthflow

From $30,000Visit Synthflow (opens in a new tab)

No-code AI voice agents

Score 6.8/10Paid from: From $30,000/yr (contract)Free tier: UnverifiedLast verified 2026-10-13

Why ranked: Its own site says: “Synthflow is the leading end-to-end Voice AI platform for enterprise call automation.” We placed it 3rd of 5 on fit for this task. No free plan confirmed; paid from From $30,000/yr (contract).

Fit 7.0 · value 4.4 · breadth 8 · availability 10 (how we score) · pricing source · site live

SPONSORED Your tool here: paid placement is shown here, separate from the ranking, and never changes the order. Advertise

Rank 4

Vapi

From $29Visit Vapi (opens in a new tab)

Voice AI agent platform for developers

Score 6.4/10Paid from: From $29/month as listedFree tier: UnverifiedLast verified 2026-10-13

Why ranked: Its own site says: “Build, test, and deploy advanced voice AI agents in minutes with Vapi.” We placed it 4th of 5 on fit for this task. No free plan confirmed; paid from From $29/month as listed.

Fit 5.5 · value 5.6 · breadth 8 · availability 10 (how we score) · pricing source · site live

Rank 5

Aircall

From $100Visit Aircall (opens in a new tab)

Cloud phone system for teams

Score 5.6/10Paid from: From $100/month as listedFree tier: UnverifiedLast verified 2026-10-13

Why ranked: Its own site says: “AI-powered customer communications platform to unify channels, automate tasks, & provide insights.” We placed it 5th of 5 on fit for this task. No free plan confirmed; paid from From $100/month as listed.

Fit 4.0 · value 4.4 · breadth 10 · availability 10 (how we score) · pricing source · site live

FAQ

What is the best AI tool to aI phone agents for outbound calls?

By TaskRanking's published rubric, Retell AI ranks first, followed by Bland AI and Synthflow.

Is there a free AI tool to aI phone agents for outbound calls?

Yes: Retell AI has a free tier per its own pricing page (checked 2026-10-13).

How are these tools ranked?

Score = 50% fit, 25% value (from vendor pricing pages), 15% breadth, 10% availability. Sponsorship never affects rank.