Azure Speech TTS Neural
$0.000015 / character
API usage cost calculators
Choose the exact service you use. The calculator keeps the provider’s billing unit visible so a per-message rate is never confused with a per-minute or per-request rate.
Azure
Azure OpenAI Service Global Standard pay-as-you-go token rates for enterprise GPT models.
Bandwidth
Enterprise messaging and voice APIs with public US SMS list rates.
Bandwidth SMS outbound (US 10DLC)
$0.004 / outbound SMS message
Better Stack
Logs and uptime monitoring with published per-GB log ingestion and retention rates.
Better Stack log ingestion
$0.15 / GB logs ingested
Bird
Messaging APIs (formerly MessageBird) with public country SMS list rates.
Bird SMS outbound (United States)
$0.0074 / outbound SMS message
Brevo
Marketing and transactional email with plan quotas and credit packs.
Brevo email (Starter illustrative per-email)
$0.0018 / email
Cartesia
Realtime voice agents and Sonic TTS with public per-minute and credit meters.
Cartesia Line agent calling
$0.06 / agent call minute
Cartesia Line telephony add-on
$0.014 / telephony add-on minute
Checkly
Synthetic monitoring with published browser and API check overage rates.
Checkly browser check run overage
$0.0065 / browser check run over limit
Checkly API check run overage
$0.00026 / API check run over limit
Checkly extra uptime monitor
$0.32 / extra uptime monitor-month
Checkly extra agentic check
$32.00 / extra agentic check-month
Checkly API checks purchased
$0.00018 / purchased API check run
CircleCI
CI/CD with published credit pack rates and Docker layer cache storage.
CircleCI credit
$0.0006 / credit
CircleCI credit
$0.0006 / credit
Clerk
Authentication and user management with published monthly retained user overage rates.
Clerk monthly retained user overage
$0.02 / monthly retained user (MRU)
ClickSend
Prepaid multi-channel messaging with volume-based US SMS top-up rates.
ClickSend SMS outbound (US low-volume top-up)
$0.0226 / outbound SMS message