Retell AI
retellai.com
Voice AI infrastructure platform for building conversational phone agents.
Quick Information
- Category:
- Business
- Pricing:
- Pay-per-use
- Platforms:
- API
- Free Plan:
- No
- API Available:
- Yes
- Last Verified:
- September 2026
What Is Retell AI?
Retell AI is a voice AI infrastructure platform for building conversational phone agents, using modular per-minute pricing where each technology layer bills separately — the advertised $0.07/minute base rate covers voice infrastructure ($0.055/minute) plus standard text-to-speech ($0.015/minute), but a typical full setup with voice infrastructure, TTS, LLMs, and telephony realistically costs $0.13-$0.31/minute depending on the specific models chosen.
A genuinely important cost-transparency detail worth understanding before budgeting: LLM agent costs range from $0.006/minute for basic models up to $0.06/minute for advanced options like Claude 3.5, telephony adds roughly $0.015/minute, and there are small fixed fees ($2/month per Retell phone number, $8/month per extra concurrent call slot beyond the ~20 free concurrent calls typically included) — meaning the advertised base rate significantly understates real per-minute cost once a production-ready agent is fully configured.
It's aimed at developers and businesses building AI voice agents for phone-based conversational applications, with the modular pricing structure requiring careful cost modeling across voice infrastructure, TTS, LLM choice, and telephony rather than relying on the advertised $0.07/minute headline rate — Enterprise plans with custom pricing can reduce costs to as low as $0.05/minute for high-volume users. See our AI Chatbots directory for related tools like PolyAI and Vapi.
What Can You Use Retell AI For?
Conversational phone agents
Builds AI-powered phone agents for automated conversational interactions.
Voice infrastructure integration
Provides modular voice infrastructure, TTS, LLM, and telephony components.
High-volume voice deployment
Scales to high call volumes with Enterprise custom pricing options.
Retell AI Features
- Modular per-minute pricing — Bills each technology layer (voice infrastructure, TTS, LLM, telephony) separately.
- Flexible LLM selection — Allows choosing LLM models ranging from basic ($0.006/minute) to advanced like Claude 3.5 ($0.06/minute).
- Concurrent call scaling — Includes ~20 free concurrent calls, with additional slots at $8/month each.
Who Is Retell AI For?
- Developers — Builds custom conversational phone agents using modular voice AI infrastructure.
- High-volume businesses — Uses Enterprise custom pricing to reduce per-minute costs at scale.
Retell AI Pros & Limitations
What We Like
- Modular pricing allows choosing the right LLM and TTS combination for specific quality/cost needs
- Enterprise custom pricing can reduce costs to as low as $0.05/minute at high volume
- No mandatory base subscription — usage-based pricing starting at $0.07/minute
Limitations
- Real total cost ($0.13-$0.31/minute) is significantly higher than the advertised $0.07/minute base rate
- Multiple separate fees (phone numbers, concurrent call slots) add complexity to cost estimation
- Advanced LLM models (like Claude 3.5) add meaningfully to per-minute cost
Retell AI Pricing
| Plan | Price | Main Features |
|---|---|---|
| Base rate | $0.07/minute | Voice infrastructure + standard TTS |
| Full setup (typical) | $0.13-$0.31/minute | Voice infrastructure, TTS, LLM, telephony combined |
| Enterprise | Custom (as low as $0.05/minute) | High-volume discounted pricing |
Pricing was last verified September 2026. Check the official website for the latest pricing.
AI Listing Jungle Ranking
- Global Rank:
- #763
- Overall Score:
- 13.0/100
- Monthly Users:
- –
- Rank Change:
- –
This ranking reflects AI Listing Jungle's own independent scoring methodology and is not an endorsement by Retell AI or its company. How Our Rankings Work
Frequently Asked Questions
How much does Retell AI cost?
The base rate is $0.07/minute, but a typical full setup costs $0.13-$0.31/minute once LLM and telephony are included.
What does the base rate include?
Voice infrastructure ($0.055/minute) plus standard text-to-speech ($0.015/minute).
Are there fixed fees?
Yes, $2/month per phone number and $8/month per extra concurrent call slot beyond ~20 free.
Can I reduce costs at high volume?
Yes, Enterprise custom pricing can bring costs down to as low as $0.05/minute.
Our Take
Retell AI's advertised $0.07/minute base rate genuinely understates real total cost — budget for $0.13-$0.31/minute once LLM, TTS, and telephony are fully configured for a production agent.
Choosing a lower-cost LLM tier over advanced models like Claude 3.5 can meaningfully reduce per-minute costs if response quality requirements allow it.
Retell AI Alternatives
Retell AI Comparisons
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