What are credits?

On April 29th 2025, Voiceflow transitioned to a credit-based billing system. This system aims to simplify billing, make costs more predictable, and give you full visibility into your usage. This course is designed to help you optimize your AI agent to reduce the number of credits it consumes, saving you money while still keeping your agent powerful.

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What uses credits?

Most actions that your AI agent makes will consume credits. These include:

• Each message sent by your agent consumes 1 credit
• Each minute your agent spends on a call consumes 10 credits
• Text-to-speech generations are charged in addition to call minutes and are based on the voice model's pricing. In the example below, 11Lab's Alice model is charged at 18x tokens - this means that 2000 11Labs tokens cost 18 Voiceflow credits. ElevenLabs' pricing is 1 ElevenLabs token per character. Therefore, if our agent generates a 50 character message as speech, the price would be (18 Voiceflow credits / 2000) * 50 characters = 0.45 credits.
  
  As a general estimate, ElevenLabs's Flash and Turbo models cost around 5 credits per minute and their Multilingual models cost around 10 credits per minute. Deepgram's voices cost approximately 2 credits per minute, and Rime's cost around 3 credits per minute.

• To calculate how many tokens an LLM uses, look at the multiplier next to its name in the Voiceflow Creator. That is the cost of 2000 of that LLM's tokens in credits. For example, in the example below, GPT-4 Turbo has a 5x credit multiplier. That means, if my agent consumed 10,000 GPT-4 Turbo tokens, I would be charged 25 credits.
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  In simpler terms, the formula to calculate credits usage is Credits = (Tokens Used / 2000) × Multiplier.

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What doesn't use credits?

Some actions on Voiceflow don't consume credits. These include:

• Running functions, although messages sent by functions do consume credits
• Querying the Knowledge Base

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Calculate your current usage

To get started, we recommend calculating your current usage using our calculator. This will give you an estimate of how many credits we expect your agent to consume.

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Once you’ve calculated your current usage, you’re ready to dive into this course. We’ll show you how we recommend optimizing your agent to reduce its credit usage.