Start free. Pay the real rate as you scale.
One shared balance across text-to-speech and voice agents. No opaque credit buckets, passthrough fees, or token math.
- 50K TTS characters and 60 agent minutes free
- Text-to-speech from $6 per 1M characters
- Voice agents $0.068 per minute at Scale
Choose the plan that fits the traffic.
Every paid plan funds one balance across both APIs. Rates fall as volume grows.
Free
$0 /month
Build and ship on both APIs. No credit card.
- Text-to-speech
- 50K characters / mo · hard cap
- Voice agents
- 60 min / mo · hard cap
- Phone numbers
- BYOC only
- Concurrency
- 3 concurrent calls
Included features
- 1,500+ voices, 30+ languages
- LLM, STT & TTS included — no passthrough
- Hard cap — no overages, no surprise bills
- Unlimited BYOC: your carrier, SIP, or Twilio
- Commercial use · community support
Starter
$10 /month
For solo devs and early-stage projects.
- Text-to-speech
- 1M chars included, then $10/1M
- Voice agents
- 120 min included, then $0.075/min
- Phone numbers
- 1 included
- Concurrency
- 6 concurrent calls
Included features
- Auto top-up overages — no hard cap
- LLM, STT & TTS included — no token math
- Voice cloning, streaming, SSML
- Community support
Pro
$99 /month
For teams shipping voice in production.
- Text-to-speech
- 3M chars included, then $8/1M
- Voice agents
- 1,200 min included, then $0.07/min
- Phone numbers
- 5 included
- Concurrency
- 12 concurrent calls
Included features
- No passthrough, no token math, no commitment
- Multiple flows · inbound + outbound
- Premium models (GPT-4o, GPT-4.1) + custom endpoints
- Knowledge base + tool calling
- Professional voice cloning
- Priority support
Scale
$499 /month
For serious production voice traffic.
- Text-to-speech
- 10M chars included, then $6/1M
- Voice agents
- 6,000 min included, then $0.068/min
- Phone numbers
- 20 included
- Concurrency
- 30 concurrent calls
Included features
- Batch campaigns
- 30 concurrent calls — highest throughput
- Bring-your-own-model (BYOM)
- Unlimited voice cloning
- Dedicated support + SLA
- Text-to-speech
- Volume discounts
- Voice agents
- From $0.06 / minute
- Phone numbers
- Custom allocation
- Concurrency
- Custom
- Custom volume & rate commitments
- SSO, SOC 2 Type II, custom DPA
- Custom voices, models & integrations
- Dedicated success manager
One rate. Everything included.
Voice-agent minutes are all-in. Most platforms quote a platform fee, then bill the LLM, speech, and telephony on top. SpeechifyAI is one line item per minute.
Most platforms
Platform fee
LLM passthrough +
Speech-to-text +
Text-to-speech +
Telephony +
Five line items, each metered separately. The bill takes a spreadsheet.
SpeechifyAI
From $0.07/min
- LLM
- Speech-to-text
- Text-to-speech
- Telephony orchestration
One line item. No passthrough, no token math — and 60 free minutes every month.
Billing questions
How is usage calculated?
Text-to-speech is billed by the number of characters sent to the API (whitespace and SSML tags are not counted). Voice agents are billed per minute of conversation, with text-to-speech, speech-to-text, LLM inference, and orchestration all included — no passthrough fees.
Are there hidden fees — LLM tokens, passthrough, or commitments?
No. Voice-agent minutes are all-in: LLM inference, speech-to-text, text-to-speech, and orchestration are included in the per-minute rate. No LLM passthrough, no per-token billing, and no annual commitment — the rate you see is the rate you pay, and you can cancel anytime.
How does billing work?
Paid usage runs on a prepaid balance. You add funds — and can turn on auto top-up to add a set amount whenever the balance drops below a threshold — and we draw it down at the published per-character and per-minute rates, with no opaque credit units and no guessing what a call costs. Your monthly plan fee covers the included allowance; anything beyond it draws from the balance. The free tier has no auto top-up, so it simply stops at its cap.
Can I switch plans at any time?
Yes. You can upgrade or downgrade your plan at any time from your dashboard. Upgrades take effect immediately and you're charged a prorated amount for the rest of the cycle. Downgrades (and cancellations) take effect at the end of your current billing term, so you keep what you've already paid for until then.
What payment methods do you accept?
We accept all major credit and debit cards (Visa, Mastercard, American Express) as well as ACH bank transfers for enterprise plans. All payments are processed securely through Stripe.
Is there a long-term commitment?
No. Self-serve plans (Starter, Pro, and Scale) are month-to-month with no commitment. Enterprise plans can be structured as annual agreements with volume discounts. You can cancel at any time.
How do phone numbers and carriers work?
Paid plans include phone numbers — 1 on Starter, 5 on Pro, and 20 on Scale — provisioned from your dashboard. On any plan, including Free, you can bring your own carrier (BYOC): connect your own SIP trunk or Twilio account at no extra cost.
What happens if I exceed my plan limits?
The free tier is a hard cap: when you reach your monthly text-to-speech characters or voice-agent minutes, usage pauses until your next billing cycle (or you upgrade) — there's no auto top-up, so you're never billed for an overage. On Starter, Pro, and Scale there's no hard cap; usage beyond your included allocation draws down your prepaid balance at your plan's rate — text-to-speech at $10 per 1M on Starter, $8 on Pro, and $6 on Scale; voice-agent minutes at $0.075/min on Starter, $0.07/min on Pro, $0.068/min on Scale — with auto top-up keeping that balance funded so production never stalls. We'll notify you as you approach your limits.
"Cancel anytime" applies to self-serve plans (Free, Starter, Pro, and Scale), with no annual contract or lock-in. Downgrade or close your workspace whenever you like. Enterprise plans follow the terms of your agreement.