Voice AI Pricing in 2026
Complete cost breakdown across STT, TTS, LLM, and platform providers. Real per-minute pricing with monthly cost estimates.
Last updated: April 2026
According to Speko's 2026 benchmarks, a production voice AI stack costs $0.0095/minute (budget) to $0.038/minute (premium). The cheapest production-ready combination is Deepgram Nova-3 ($0.0043/min) + Gemini 2.0 Flash ($0.0007/min) + Cartesia Sonic ($0.0045/min) = $0.0095/minute total. Platform solutions like Vapi or Retell charge $0.05-0.15/minute all-inclusive. Speko helps you find the lowest-cost stack that meets your quality requirements.
Voice AI pricing has three layers: STT (transcription), LLM (reasoning), and TTS (speech synthesis). Each layer has multiple providers at different price points. Below is the complete breakdown with monthly cost estimates at common usage levels.
STT Pricing Comparison
Speech-to-text provider pricing as of March 2026. Streaming rates shown.
LLM Pricing Comparison
LLM costs estimated per minute of voice conversation (~150 input tokens + ~100 output tokens per exchange).
TTS Pricing Comparison
Text-to-speech provider pricing as of March 2026. Standard tier rates.
Full Stack Cost Comparison
Complete voice AI stack costs: STT + LLM + TTS combined. Based on Speko benchmark data.
Key Pricing Insights
TTS is the Biggest Cost Driver
In most voice AI stacks, TTS accounts for 40-60% of the total per-minute cost. Switching from ElevenLabs ($0.018/min) to Cartesia Sonic ($0.0045/min) saves $135/month at 10,000 minutes with only a small quality tradeoff (MOS 4.2 vs 4.5).
DIY is 5-15x Cheaper Than Platforms
Building with individual APIs (STT + LLM + TTS) costs $0.0095-0.038/minute. Platform solutions charge $0.05-0.15/minute. The platform premium covers orchestration, turn-taking, and telephony infrastructure. Evaluate whether that convenience is worth 5-15x the API cost.
LLM Cost is Often Negligible
With models like Gemini 2.0 Flash at $0.0007/min, the LLM layer is the cheapest part of the stack. Even GPT-4o at $0.008/min is modest compared to TTS costs. Do not over-optimize on LLM pricing at the expense of response quality.
Voice AI vs. Human Agents: 3-150x Savings
Human call center agents cost $0.50-1.50/minute. Voice AI at $0.01-0.15/minute is a 3-150x cost reduction. At 100,000 minutes/month, that translates to $35,000-145,000/month in savings.
Optimize Your Voice AI Costs with Speko
Pricing tables go stale. Speko benchmarks real provider costs against your quality requirements in real-time.
Real-Time Cost Analysis
See exact per-minute costs for every STT+LLM+TTS combination. Find the cheapest stack that meets your quality bar.
Monthly Cost Projections
Input your expected volume and get monthly cost estimates for every provider combination. Budget accurately before you commit.
Cost-Quality Tradeoff Analysis
Speko shows exactly how much quality you gain or lose at each price point. Make data-driven decisions on where to invest.
Frequently Asked Questions
How much does voice AI cost per minute in 2026?▾
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Methodology
All pricing data reflects published rate cards as of March 2026. Per-minute LLM costs estimated based on typical voice conversation token usage (~150 input + ~100 output tokens per exchange). Monthly estimates assume consistent usage across all days. Volume discounts and enterprise pricing not included.
Find the Cheapest Stack That Meets Your Quality Bar
Stop overpaying for voice AI. Speko benchmarks 240+ provider combinations and shows you the best option at every price point.