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TTS API Cost Comparison

Enter monthly audio minutes and characters spoken per minute. The comparison converts OpenAI per-character, ElevenLabs per-1K-character, Gemini per-10-second and Cartesia credit pricing into one $ per 1M characters and $ per audio minute, then prices the same monthly sample. Estimates only; vendor pricing pages prevail.

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Same sample for every vendor
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VendorModel / plan$ / 1M chars$ / audio minAt your volume / moNote

Assumptions: OpenAI tts-1 $15 and tts-1-hd $30 per 1M characters (gpt-4o-mini-tts is billed per audio token with no published per-minute rate, so it is left out). ElevenLabs API pay-as-you-go per 1,000 characters: Flash / Turbo and v4 Turbo $0.04, v3 and Multilingual v2 $0.08. Gemini TTS uses Google's official per-10-second audio equivalents (Standard tier; 3.8 Flash / Flash-Lite at promo rates through 2026-12-31, doubling from 2027-01-01) plus text input at ~4 characters per token. Cartesia Sonic is 1 credit per character; "included" rows are plan fee ÷ credits, the last row is the cheapest plan fit with optional overage ($65 / $45 / $38 per 1M). Characters per minute (default 800) converts between units. STT, LLM, telephony and voice-agent fees are not included; voice quality and latency differ — test your own script.

Estimates only. List prices as of 2026-11-01 (Asia/Shanghai); vendor pricing pages prevail. Sources: OpenAI pricing · ElevenLabs API pricing · Gemini API pricing · Cartesia pricing

Voice agent platforms (full call minute)

TTS is only one slice of an AI phone-agent minute. Platforms bundle STT + LLM + TTS + telephony: Vapi charges $0.05/min hosting plus pass-through model costs (≈ $0.08–$0.13/min all-in on its own example), Retell bills components (default $0.11/min = GPT 5 $0.04 + infra $0.055 + voice $0.015). Bland bundles LLM + STT + TTS at $0.14/min (Start) or $0.12/min + $299/mo (Build). Speech-to-speech APIs (OpenAI Realtime, Gemini Live) price audio tokens directly.

Voice AI Agent Platform Cost Comparison · Vapi Cost Calculator · Retell AI Cost Calculator · Bland AI Cost Calculator · OpenAI Realtime Voice Cost Calculator · Gemini Live Voice Cost Calculator · Deepgram API Cost Calculator · ElevenLabs TTS Cost Calculator · Cartesia TTS Cost Calculator

Vapi Cost Calculator · Retell AI Cost Calculator · Cartesia TTS Cost Calculator · ElevenLabs TTS Cost Calculator · OpenAI TTS Cost Calculator · Gemini TTS Cost Calculator · OpenAI Realtime Voice Cost Calculator · Gemini Live Voice Cost Calculator

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كيف يعمل

هل تم تحميل أي بيانات؟
لا هذه الحاسبات و رموز الأشعة الكهرومغناطيسية تعمل في جهازك
هل تتغير أسعار الذكاء الاصطناعي؟
نعم. غيّر حقول $/1M أو الخطة وتحقق من الصفحة الرسمية قبل الميزانية.
هل تُرفع البيانات؟
لا. الحساب يعمل في متصفحك فقط.