Estimate your Twilio + AI voice costs per minute. Calculate telephony, AI model, TTS, and STT costs for India, US, Germany, UK. Compare with Retell AI, Vapi, and Bland AI pricing.
Estimate Twilio + AI voice costs
Twilio voice rate by country (50+ countries)
AI model cost tiers (GPT-4, GPT-4o, Claude 3)
Text-to-speech costs (ElevenLabs, OpenAI, Play.ht)
Speech-to-text costs (Deepgram, Whisper, AssemblyAI)
Phone number pricing by country
Call recording & transcription costs
Side-by-side competitor comparison
Annual savings estimate
Real-time cost calculation
Export pricing breakdown
Compare Retell AI, Vapi, Bland AI
2025 updated pricing data
Estimate total costs before building a Twilio-based voice AI application. Compare DIY vs platform.
Budget accurately for voice AI features. Compare build vs buy and justify decisions with data.
Understand the true cost of voice AI automation. Calculate ROI before making investment decisions.
Compare pricing between building with Twilio vs platforms like Retell AI. Find the cost-effective path.
Estimate costs at scale. Calculate volume discounts and compare multi-region pricing.
Calculate voice bot costs for customer support automation. Estimate savings vs human agents.
The most comprehensive voice AI cost calculator. Get accurate Twilio pricing for any country and compare with alternatives.
See exactly what you will pay for Twilio, AI models, TTS, STT, and phone numbers.
Get accurate pricing for India, US, Germany, UK, Australia, and 45+ more countries.
Side-by-side comparison with Retell AI, Vapi, and Bland AI pricing.
Instantly calculate costs as you adjust volume, AI model, and other parameters.
Calculate volume discounts and estimate annual costs at scale.
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Current Twilio voice rates for popular countries. Prices shown are per minute.
| Country | Outbound | Inbound | Phone Number |
|---|---|---|---|
| United States | $0.013 | $0.0085 | $1.00/mo |
| India | $0.0075 | $0.0045 | $2.00/mo |
| Germany | $0.015 | $0.0085 | $1.15/mo |
| United Kingdom | $0.014 | $0.0085 | $1.00/mo |
| Australia | $0.025 | $0.0085 | $2.00/mo |
| Canada | $0.013 | $0.0085 | $1.00/mo |
* Prices are approximate and may vary. Use our calculator for exact rates.
Compare voice AI platform pricing to find the best option for your use case
| Platform | Per Minute | Includes | Dev Time | Best For |
|---|---|---|---|---|
| Build with Twilio | $0.08-0.15 | Telephony only | High | High volume (50K+ min/mo) |
| Retell AI | $0.10-0.12 | All-inclusive | Low | Quick launch |
| Vapi | $0.05-0.10 | All-inclusive | Low | Developers |
| Bland AI | $0.09-0.15 | All-inclusive | Low | Enterprise sales |
Compare voice API pricing for the Indian market with DLT compliance
| Platform | Per Minute | Setup | DLT | Best For |
|---|---|---|---|---|
| Twilio (India) | Rs 0.62-1.25 | Self-serve | DLT Ready | Global companies |
| Exotel | Rs 0.50-0.80 | Enterprise | DLT Native | Indian enterprises |
| Plivo | Rs 0.55-0.90 | Self-serve | DLT Ready | Startups |
| Edesy Voice AI | Custom | Managed | Full | AI voice automation |
* INR pricing approximate. All platforms require DLT registration for commercial use in India.
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Get accurate cost estimates in 4 simple steps
Choose the country where you will be making or receiving calls. Twilio rates vary significantly by country - India is one of the cheapest at $0.0075/min, while Germany is higher at $0.015/min.
Input your expected monthly call minutes. This helps calculate total Twilio telephony costs and identifies potential volume discounts for high-volume users.
Select your AI model (GPT-4, GPT-4o-mini, Claude 3), text-to-speech provider (ElevenLabs, OpenAI), and speech-to-text service (Deepgram, Whisper). Each choice affects your per-minute cost.
See your total estimated costs including Twilio, AI, TTS, STT, and phone numbers. Compare with Retell AI, Vapi, and Bland AI to find the most cost-effective option.
More free tools for voice AI development
Twilio pricing for voice calls consists of several components: per-minute calling rates (which vary by country), phone number rental fees, and optional add-ons like call recording and transcription. When building a voice AI, you also need to factor in AI model costs (GPT-4, Claude), text-to-speech (ElevenLabs, OpenAI TTS), and speech-to-text (Deepgram, Whisper) services.
India offers some of the most competitive Twilio voice rates globally. Outbound calls to Indian mobile numbers cost approximately $0.0075 per minute, while inbound calls cost around $0.0045 per minute. Indian phone numbers cost $2/month. This makes India an excellent market for voice AI deployments, with total costs (including AI) of $0.06-0.10 per minute.
German Twilio voice rates are higher than most markets. Outbound calls cost approximately $0.015 per minute for landlines and $0.025 for mobile numbers. Inbound calls cost $0.0085 per minute. German phone numbers cost $1.15/month. GDPR compliance requirements may add additional costs for data processing.
The build vs buy decision depends on your volume and technical resources. Building with Twilio gives you full control and lower per-minute costs at scale ($0.08-0.15/min total), but requires significant development time. Platforms like Retell AI ($0.10-0.12/min), Vapi ($0.05-0.10/min), and Bland AI ($0.09-0.15/min) offer faster time-to-market but higher per-minute costs.
Retell AI is an all-in-one voice AI platform charging $0.10-0.12 per minute. This includes telephony, AI processing, text-to-speech, and speech-to-text. For volumes under 10,000 minutes/month, Retell AI is often more cost-effective than building with Twilio due to development time savings. Above 50,000 minutes/month, Twilio typically becomes 30-50% cheaper.
Vapi offers competitive voice AI pricing starting at $0.05 per minute for basic use cases. This makes it one of the most affordable options for developers. Vapi integrates with multiple LLM providers and offers flexible deployment options. For simple voice AI applications, Vapi can be more cost-effective than building from scratch.
Healthcare voice bots require HIPAA compliance, which adds costs. Twilio offers a HIPAA-eligible environment with BAA at $0.006/min additional. You will also need HIPAA-compliant AI services. Total costs for healthcare voice bots range from $0.12-0.25 per minute including compliance requirements.
AI model costs vary significantly by provider and model. GPT-3.5-turbo is the cheapest at $0.002-0.004 per minute. GPT-4o-mini offers better quality at $0.01-0.02/min. GPT-4 and Claude 3 Opus cost $0.03-0.06/min but provide the highest quality responses. Choose based on your quality requirements and budget.
TTS costs depend on the provider and voice quality. ElevenLabs offers the most natural voices at $0.015-0.03/min. OpenAI TTS costs $0.015/min with good quality. Play.ht and Amazon Polly are more affordable at $0.01-0.02/min. For cost-sensitive applications, consider lower-tier voices during development.
Voice AI ROI is calculated by comparing voice bot costs against human agent costs. If your call center costs $0.40/minute (agent salary + overhead) and voice AI costs $0.12/minute, you save $0.28 per minute. At 50,000 minutes/month, annual savings exceed $168,000. Factor in implementation costs for accurate ROI calculations.
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