Deepgram Aura vs Speechma for scripts and voice-overs

Deepgram Aura and Speechma side by side

What you pay and what the price counts

Speechma wins on price, since every tool is free in the browser and paid plans start at $1.50 a month. SpeechmaPRO caps characters per conversion at 10,000, and the API meters characters per month, 1M on Starter and 50M on Pro.

Deepgram Aura charges $0.015 per 1k characters of input text, metered on usage. The cost comes out of a prepaid dollar credit balance, not a monthly character allowance, so every character you send is billed.

What the free plan lets you publish

Speechma wins: every tool is free, with a 5-digit security code per generation and ads on the page. The free audio carries no watermark or required credit, and commercial use is included when you own the rights to what you put in.

Deepgram Aura offers free use only in part. No paid plan gates commercial use: any customer may build the service into its own product, and Deepgram pitches marketing and advertising voice-overs, but reselling the service on its own is barred.

What happens when you run past your allowance

Deepgram Aura wins if your work must not stop. Pay as you go draws down prepaid credit at the listed rate with an optional auto-reload, and on the annual Growth plan usage past the prepaid credits is billed at the Growth rate plus 10%, charged weekly. Some Deepgram Aura voices use more credit than others.

The Speechma API sells no extra characters past the monthly quota: requests are refused with a quota error until you move up to a larger plan. Every API plan includes the full voice catalog at one character rate, and premium voices use no more allowance.

How much control you get over delivery and pronunciation

Speechma wins on delivery and Deepgram Aura on pronunciation. Speechma’s Voice Effects set pitch, speed, volume, pauses and speaking styles, but its only pronunciation fix is respelling a word phonetically in the script each time.

Deepgram’s Aura-2 model sets speaking speed but supports no inserted pauses and has no emphasis or style tags. It does accept inline pronunciation overrides for words, in English and Spanish.

Sharing the work and keeping your audio out of training

Deepgram Aura wins on sharing: the project owner invites team members as owner, admin or member, and seats carry no separate fee. Deepgram may use customer content to improve its models unless each API request opts out through a documented parameter.

Speechma wins on privacy: your recordings are processed only to make the result, are not kept afterward, and partners may not use them for their own purposes.

Each one in detail

• Price: Free, then $0.03 per 1k characters
• Free plan: yes
• Who it’s for: Developers building voice agents or customer service lines who want speech through an API at $0.015 per 1k characters, with no separate fee for teammates.
• Skip it if: Creators who want to paste a script into a page and download audio should pick something else, because Aura has no project view and caps each request at 2,000 characters, so your own code has to split and rejoin a long script.

Deepgram Aura is a text to speech API from a speech-recognition company, built for real-time voice agents. Official software development kits (SDKs) cover JavaScript, Python, Go and Java, and Deepgram documents direct use with LiveKit and a Twilio guide for streaming speech into calls. Downloads include MP3 and Opus, and live streaming offers only the raw telephony formats.

Aura-2 lets you set speaking speed and override how words are pronounced in English and Spanish, but it does not support inserted pauses or emphasis tags.

Aura costs $0.015 per 1k characters, metered on usage, and that is the regular pay-as-you-go rate, not a promotion. Pay as you go draws down prepaid credit with an optional auto-reload. On the annual Growth plan, usage past the prepaid credits is billed at the Growth rate plus 10%, charged weekly, where Speechma’s API refuses requests once the quota runs out.

• Price: Free, then $1.50 a month
• Free plan: yes
• Who it’s for: Creators and marketers who want free voice-over or dubbed video in the browser, with commercial use included.
• Skip it if: Developers who may need more API characters than their monthly quota should pick something else, because Speechma’s API refuses requests past the quota and sells no extra characters.

Its dubbing tool returns a downloadable MP4 with the speech replaced in another language, but the speaker’s lip movements stay unchanged.

Every tool is free in the browser, with ads on the page and a 5-digit security code for each generation. Free dubbing accepts MP4 video files up to 60 MB in nine target languages. Longer scripts are split into separate clips and downloaded together as a ZIP, not managed as one project.

Paid plans start at $1.50 a month, and SpeechmaPRO raises the cap to 10,000 characters per conversion. Premium voices use no extra allowance, and every API plan includes the full voice catalog at one character rate, while some Deepgram Aura voices use more. Speechma does not keep your recordings after processing, while Deepgram may use customer content to improve its models.

How they compare

Figure 1. Of 8 questions both answer, Deepgram Aura says yes to 6 and Speechma says yes to 2

Source: Our answers to the same questions for both products, each read on the vendor’s own pages.

Deepgram Aura’s 6 of 8 include voices that use more credit and content that may train its models, so a higher count is not a better score for someone reading scripts. Speechma’s 2 of 8 are yes on emotion, pace and emphasis and a free plan.

Which one to pick

• If you need to stream generated speech into a LiveKit or Twilio call: pick Deepgram Aura. Deepgram Aura has an API and documents direct use with LiveKit and a Twilio guide for streaming generated speech into calls.
• If you need several people working in one shared project: pick Deepgram Aura. Deepgram Aura lets a project owner invite team members as owner, admin or member at no seat fee.
• If you need to dub a video or clone a voice as well as read a script: pick Speechma. Speechma dubs a video from 12 source languages into 9 target languages and returns an MP4, and clones a voice from a 5 to 30 second sample.
• If you need to set emotion, pace and emphasis: pick Speechma. Speechma’s Voice Effects set pitch, speed, volume, pauses and speaking styles, while Deepgram’s Aura-2 model sets speed but supports no inserted pauses and no emphasis or style tags.
• If you need your recordings kept out of model training: pick Speechma. Speechma does not keep your recordings after processing and its partners may not use them for their own purposes, while Deepgram may use customer content unless each API request opts out.

How we compared

We compared 2 tools on price, free plan and 39 questions about what they do, reading each vendor’s pricing page and product pages between 2 September 2026 and 2 November 2026. We did not sign up for or run any of them.

The figures are as of 2 November 2026, from 2 listings. See how we price an hour and the price log for voice tools.