Free Trial
Get started at no cost with a limited-minute allowance. Max 3 minutes per call. Credits stay active as long as your account is open. No credit card required.
Pricing
Simple, Transparent Pricing
Start with a free trial. Scale with metered pay-as-you-go. No per-seat licensing. No hidden fees. Third-party AI services passed through at cost with zero markup.
Plans
Choose How You Pay
Metered Pay-As-You-Go
Pay only for what you use. Start with a $150 prepayment. Auto-recharges $100 when your balance drops below $50. Credit card on file. No annual commitment.
Estimate
Build Your Agent Estimate
Select your preferred LLM and text-to-speech providers to see the full per-minute cost of running an AI agent. All third-party AI services are passed through at cost with zero markup.
Metered Rates
Metered Usage Rates
Metered rates cover Syllable platform hosting. Third-party AI services from providers like OpenAI, Google, and Deepgram are passed through at cost with zero markup.
SIP
| Usage Type | Unit | Rate |
|---|---|---|
| SIP Connection | 60 seconds | $0.0040 |
| SIP Recording | 60 seconds | $0.0025 |
| SIP Transfer | 60 seconds | $0.0026 |
Voice
| Usage Type | Unit | Rate |
|---|---|---|
| Enterprise Voice | 60 seconds | $0.0600 |
Text
| Usage Type | Unit | Rate |
|---|---|---|
| Enterprise Text Input | 1M characters | $15.00 |
| Enterprise Text Output | 1M characters | $15.00 |
Insights & Orchestration
| Usage Type | Unit | Rate |
|---|---|---|
| Tools (Input / Cached / Output) | 1M tokens | $1.10 |
| Transcriptions | 60 seconds | $0.0080 |
| Workflow Invocations | 1 invocation | $0.0020 |
Components
Detailed Component Pricing
Third-party AI services are passed through at cost with zero markup. Rates below are per 1M tokens (LLM), per 1M characters (TTS), or per 60 seconds (STT).
LLM — OpenAI
| Model | Input ($/1M tokens) | Output ($/1M tokens) |
|---|---|---|
| GPT-5.2 | $1.75 | $14.00 |
| GPT-5.1 | $1.25 | $10.00 |
| GPT-5 | $1.25 | $10.00 |
| GPT-5 mini | $0.25 | $2.00 |
| GPT-5 nano | $0.05 | $0.40 |
| GPT-4.1 | $2.00 | $8.00 |
| GPT-4.1 mini | $0.40 | $1.60 |
| GPT-4.1 nano | $0.10 | $0.40 |
LLM — Anthropic
| Model | Input ($/1M tokens) | Output ($/1M tokens) |
|---|---|---|
| Claude Opus 4.6 | $5.00 | $25.00 |
| Claude Sonnet 4.6 | $3.00 | $15.00 |
| Claude Haiku 4.5 | $1.00 | $5.00 |
LLM — Google
| Model | Input ($/1M tokens) | Output ($/1M tokens) |
|---|---|---|
| Gemini 1.5 Pro | $1.25 | $5.00 |
| Gemini 2.5 Flash | $0.30 | $2.50 |
| Gemini 2.5 Flash Lite | $0.10 | $0.40 |
Text-to-Speech
| Provider | Rate ($/1M characters) |
|---|---|
| OpenAI Voices | $15.00 |
| ElevenLabs Voices | $120.00 |
| Google Wavenet | $16.00 |
| Google Chirp3-HD | $30.00 |
Speech-to-Text
| Provider | Rate (per 60 seconds) |
|---|---|
| Deepgram Nova 3 | $0.0065 |
| Deepgram Nova 2 | $0.0047 |
| Google STT v2 | $0.0160 |
Support
Support Plans
Standard Support
Included with every plan. Weekday coverage 8 AM to 8 PM EST (excluding US federal holidays). 8-hour response time via support tickets.
Enterprise Support
10-minute engineering escalation and a dedicated account manager with 1-hour response. Annual fee waived for customers with annual commitments over $500,000.
Contact UsTerms
Billing Terms
All fees are in USD. Pay-as-you-go credits remain active as long as the account is in good standing. For enterprise pricing and custom commitments, contact us.
All subscriptions are governed by the Syllable Acceptable Use Policy and Privacy Policy.