Retell AI Pricing Calculator 2026
Calculate your real Retell AI cost per minute — including LLM, voice infra, TTS, and telephony charges that add up fast at scale.
Understanding Retell AI's True Cost
Retell AI is one of the leading voice AI platforms — but its pricing page shows a starting rate of "$0.07/min" which only covers the voice infrastructure layer. Your real cost depends on which LLM model, TTS provider, and telephony option you choose.
This calculator breaks down every component so you can estimate your true monthly spend before committing — no surprises on your bill.
Prices based on Retell AI's publicly listed rates (June 2026). Voice infra: $0.055/min. LLM and TTS costs vary by provider. Telephony: $0.015/min for managed, $0 for SIP/web. Phone numbers: ~$2/mo each. Custom LLM costs depend on your own infrastructure. Verify current pricing at retellai.com/pricing.
Retell AI Cost Breakdown by Component (2026)
| Component | Cost Per Minute | Notes |
|---|---|---|
| Voice Infrastructure | $0.055 | Retell orchestration layer — always required |
| LLM (GPT-4o) | $0.045 | Ranges from $0.003 (GPT-5 Nano) to $0.16 |
| TTS (Retell Voices) | $0.015 | ElevenLabs costs $0.04/min for premium quality |
| Telephony (Managed) | $0.015 | $0 if using your own SIP trunk or web-only |
| Typical Total | $0.115–$0.13 | Budget $0.11–$0.31/min depending on stack |
How Retell AI Costs Scale: Real Scenarios
| Scenario | Retell AI (GPT-4o + Retell TTS) | VoxBolt |
|---|---|---|
| 100 min/month (starter) | $0.115 × 100 = $11.50/mo | $19/mo |
| 500 min/month (small team) | $0.115 × 500 = $57.50/mo | $69/mo |
| 1,000 min/month (growing) | $0.115 × 1,000 = $115/mo | $69/mo |
| 5,000 min/month (mid-market) | $0.115 × 5,000 = $575/mo | $199/mo |
| 10,000 min/month (enterprise) | $0.115 × 10,000 = $1,150/mo | $399/mo |
Retell AI LLM Model Comparison
| Model | Cost/Min | Best For |
|---|---|---|
| GPT-5 Nano | $0.003 | Simple, high-volume tasks — cheapest option |
| GPT-4o Mini | $0.005 | Good balance of cost and capability |
| Gemini 2.5 Flash | $0.006 | Fast responses, competitive pricing |
| Claude 4.5 Haiku | $0.008 | Nuanced conversations at low cost |
| GPT-5 Mini | $0.025 | Strong reasoning, mid-tier pricing |
| GPT-4o | $0.045 | High capability, widely used default |
| Claude 4.5 Sonnet | $0.060 | Premium quality, complex conversations |
| Custom LLM | Your cost | Full control via WebSocket — BYO model |
When Retell AI Makes Sense (and When It Doesn't)
✅ Choose Retell AI if:
- You need to build custom voice AI agents with full control over the stack
- You want to choose your own LLM and TTS providers
- Low-latency real-time voice conversations are critical (~600ms end-to-end)
- You have developers who can integrate via API
- Usage-based pricing works for your budget (pay for what you use)
❌ Consider alternatives if:
- You want predictable flat-rate pricing without per-minute charges
- You need a no-code solution that deploys in minutes, not days
- Your volume is high enough that per-minute costs add up fast
- You don't have developers to handle API integration
- You need built-in knowledge base management, not just voice
How VoxBolt Differs
- Flat-rate pricing — No per-minute charges. Predictable monthly cost.
- No-code deployment — One script tag, live in 5 minutes. No API integration needed.
- AI + Knowledge Base included — Train on your website, docs, and FAQs automatically.
- Knowledge gap detection — Automatically identifies what your AI can't answer.
- Multi-channel — Chat, voice, and email from one platform.
More comparisons: Intercom Pricing Calculator | Zendesk Pricing Calculator | AI ROI Planner
See how much you could save
VoxBolt publishes current plan pricing with AI included. No per-seat or per-resolution charges on eligible plans.
See how it worksHow It Works
Choose your AI stack
Select your LLM model (GPT-4o, Claude, Gemini, etc.) and TTS provider (ElevenLabs, OpenAI, Cartesia, and more).
Set your call volume
Adjust monthly minutes and telephony type — Retell managed, your own SIP trunk, or web-only calls.
See the full breakdown
Get a line-by-line cost breakdown: LLM, voice infra, TTS, telephony, and phone numbers. Compare with flat-rate alternatives.
Why Use This Tool?
Why Teams Choose VoxBolt
AI That Learns Your Business
Train on your website, docs, and FAQs — your AI assistant knows your product inside out.
Track What Matters
Built-in analytics, customer feedback collection, and knowledge gap detection.
Deploy in 5 Minutes
No code required. Paste one script tag and your AI assistant is live.
AI Included in Every Plan
No per-resolution fees or per-seat charges. Review current plan pricing anytime.