rumik silk and smallest.ai turn text and conversational replies into speech.

smallest.ai builds speech models and a platform for voice agents. its lightning models generate speech, while atoms helps teams build and run agents for phone and web conversations.

rumik silk is a family of speech models for developers building voice applications and teams producing narrated content. the models power rumik's text to speech and voice agents, and developers can build with them using the silk api. teams use silk for video voice overs, e-learning narration, and customer support calls.

how is rumik silk different from smallest.ai?

1. describe the voice

smallest.ai's lightning v3.1 and v3.1 pro generate speech using a voice selected from a catalog or created through cloning. their tts requests take that voice's id rather than a written description of the speaker.

with silk's mulberry, the voice starts with a written description. the same request carries that description and the text to speak:

description: a warm female voice in her 30s, british english accent, calm conversational pace
text: thanks for waiting. let me check that for you

description: a warm female voice in her 30s, british english accent, calm conversational pace
text: thanks for waiting. let me check that for you

the description can cover age, accent, pace, and emotion. a new voice can start with those words, without a reference recording or a saved voice id.

2. choose unlimited tts usage

smallest.ai's public hosted tts plans charge by the number of characters generated. enterprise pricing is custom, but its published plans do not include a fixed monthly option for unlimited tts.

silk's unlimited usage plans charge a fixed monthly price based on how many generations can run at the same time. generating more text during the month does not add a per-character charge.

on a plan with two slots, you can generate two audio clips at once and as much speech as you need throughout the month for the same price.

how rumik silk and smallest.ai compare

smallest.ai offers voice cloning for teams that need to reproduce a particular speaker. silk gives teams another way to create voices through written descriptions, along with unlimited plans for a fixed monthly tts bill.

how much do rumik silk and smallest.ai cost?

smallest.ai pricing

smallest.ai charges for text to speech by the number of characters generated. it lists these rates:

smallest.ai also offers an enterprise plan for teams that need on-premise deployment or priority support. you'll need to speak with its sales team for a custom quote.

rumik silk pricing

silk offers pay-as-you-go pricing and monthly unlimited plans. mulberry costs $0.005 per 1,000 characters, while muga costs $0.010 per 1,000 characters.

the unlimited plans start at $199 a month. each plan covers unlimited speech generation, with the price based on how many generations can run at once:

you can keep generating speech throughout the month without a per-character bill. teams that need more than eight simultaneous generations can contact rumik for a custom plan.

when should you choose rumik silk or smallest.ai?

• choose rumik silk if you want to describe the speaker inside your tts request or generate speech for a fixed monthly price. its unlimited plans let you keep making audio without a per-character bill.

• choose smallest.ai if you'd rather pick a ready-made voice and use it across your scripts. lightning has a voice catalog, and you can reuse the same voice id for later generations.

try silk in the rumik playground with a few lines from your own project and hear how it sounds.