Retell AI Pricing (2026): The Per-Minute Rates, Decoded

Retell AI pricing runs from $0.07 to $0.31 per minute for voice agents, depending on the voice, LLM, and telephony you pick. There is no monthly platform subscription on the pay-as-you-go plan.

Unlike some rivals, Retell publishes its component rates: voice infrastructure, text-to-speech, per-minute LLM pricing, and telephony. That makes the bill predictable once you know your stack.

This guide walks through each rate, shows worked math at 500, 2,000, and 10,000 minutes, and covers the free tier and hidden fees. All figures come from Retell's own pricing page.

How much does Retell AI cost?

Retell AI costs $0.07 to $0.31 per minute for voice agents on its pay-as-you-go plan, with no monthly base fee. A common mid-range setup with GPT-4.1 lands around $0.13 per minute all-in.

The range is wide because you compose the price: voice layer plus LLM plus telephony. Cheap models sit near the bottom, premium models near the top.

New accounts get $10 in free credits and 20 free concurrent calls. An Enterprise plan with custom pricing sits above pay-as-you-go, so confirm live rates on retellai.com/pricing.

What makes up the Retell AI per-minute price

Every Retell AI call is priced as three per-minute components: voice layer, LLM, and telephony. Add the three rates together to get your per-minute cost.

The voice layer is about $0.07 per minute: $0.055 for Retell's voice infrastructure plus $0.015 for standard text-to-speech voices.

The LLM add-on depends on the model. Published standard-tier rates include GPT-4.1 at $0.045 per minute, Claude 4.5 Haiku at $0.025, GPT-5.1 at $0.04, Claude 4.6 Sonnet at $0.08, and premium frontier models up to $0.16 per minute.

Telephony through Retell's Twilio integration costs $0.015 per minute for US calls. Bring your own SIP trunk and Retell charges nothing for the telephony leg.

Retell AI plans at a glance

Retell AI has two plans: pay-as-you-go and Enterprise. Here is how they compare on the published pricing page.

Enterprise also adds a dedicated stable server. If you run steady volume above roughly 10,000 minutes per month, ask for an enterprise quote and compare it to your pay-as-you-go run rate.

Is Retell AI free?

Retell AI has a free allowance but no permanent free plan. New accounts get $10 in free credits plus 20 free concurrent calls.

At roughly $0.13 per minute for a typical stack, $10 covers about 75 test minutes. That is enough to validate voice quality and latency, not to serve customers.

After the credit, you pay per minute with no monthly minimum. That makes Retell one of the lower-risk platforms to trial seriously.

What Retell AI costs per month: worked examples

A typical Retell AI agent using GPT-4.1 costs about $65 per month at 500 minutes and about $1,300 at 10,000 minutes. Here is the math.

Use the example stack rate of $0.13 per minute ($0.07 voice + $0.045 GPT-4.1 + $0.015 US telephony). Then 500 x $0.13 = $65, 2,000 x $0.13 = $260, and 10,000 x $0.13 = $1,300.

Add small fixed fees on top: $2 per month per Retell phone number, and $8 per month per extra concurrent call beyond the 20 free.

• Example stack math: $0.055 + $0.015 + $0.045 + $0.015 = $0.13 per minute.
• Phone numbers: $2.00 per month each.
• Extra concurrency: $8.00 per concurrent call per month beyond 20.
• Knowledge bases: first 10 free, then $8.00 per month each.

Retell AI costs that surprise buyers

The costs that surprise Retell AI buyers are premium models, concurrency, and verified numbers. Each is published but easy to miss.

Premium frontier models can quadruple your LLM line, from $0.045 up to $0.16 per minute. Test whether a cheaper model handles your calls before defaulting to the biggest one.

Outbound campaigns often need more than 20 simultaneous lines. Fifty concurrent calls means 30 paid lines, adding $240 per month at $8 each.

A verified phone number costs $10 per month. Verification improves answer rates on outbound calls, so many sales teams treat it as required.

• Premium LLMs: up to $0.16/min vs $0.025/min for small models.
• Concurrency beyond 20: $8 per line per month.
• Verified caller number: $10 per month.
• Voicemail detection and premium voices add small per-minute increments.

How Retell AI pricing compares to Vapi, Bland, and Synthflow

Retell AI sits in the middle of the voice-agent market on price, with unusually transparent component rates. Here is the same-stack comparison.

Retell beats Bland on cheap-model stacks and loses on premium-model stacks. Against Vapi, prices are similar; the difference is control versus convenience.

Rates shift often across all four vendors. Verify each pricing page before deciding.

The bottom line on Retell AI pricing

Retell AI is fairly priced and unusually transparent: expect roughly $0.11 to $0.13 per minute with a sensible stack, and no monthly minimum. The $10 free credit makes trialing nearly free.

It fits teams that want published, predictable component rates without managing their own provider accounts. Heavy outbound teams should budget concurrency fees early.

Model your top three call types at real durations before launch. Average call length moves the monthly bill more than any single rate.