Softwr

AI · head to head

Vellum vs Deepgram

Vellum logo

Vellum

AI

Personalized AI assistant with persistent memory and autonomous action-taking

From
Free
Rated
-
Full reviewWebsite
Deepgram logo

Deepgram

AI

Voice AI API platform for speech-to-text, text-to-speech, and voice agents

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Vellum pricing varies significantly by computational tier, making budget planning difficult; Deepgram pricing is entirely usage-based, so total cost can be harder to predict than flat subscription tools.
  • They diverge on capability: Vellum covers Persistent AI identity, Deepgram covers Flux speech-to-text.

Where they differ

Only the attributes on which Vellum and Deepgram actually diverge.

Attributes where Vellum and Deepgram differ
AttributeVellumDeepgram
Pricing modelFreemium with paid plans and pay-as-you-go creditsusage-based
PlatformsWeb, macOS, iOS, Slack, Telegram, Terminalweb, api

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (AI).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Vellum

  • Persistent AI identity
  • Long-term memory
  • Email automation
  • Calendar management
  • Autonomous task execution
  • Multi-device synchronization
  • Custom plugins
  • Open-source deployment

Only in Deepgram

  • Flux speech-to-text
  • Flux text-to-speech
  • Voice Agent API
  • Real-time and batch processing
  • Self-hosted deployment
  • Audio intelligence

What people use each for

The jobs each tool is most often brought in to do.

Vellum

  • Personal productivity automation across email and calendarnot Deepgram
  • CRM updates and pipeline managementnot Deepgram
  • Expense report generation and managementnot Deepgram
  • Document drafting and content creationnot Deepgram
  • Meeting scheduling and calendar coordinationnot Deepgram

Deepgram

  • Building real-time voice agents for customer supportnot Vellum
  • Transcribing recorded audio at scale via batch STTnot Vellum
  • Adding conversational text-to-speech to voice applicationsnot Vellum
  • Self-hosting speech models for data residency requirementsnot Vellum

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Vellum

  • Pricing varies significantly by computational tier, making budget planning difficult
  • Requires explicit permission for sensitive actions, limiting autonomy
  • Self-hosting option may intimidate non-technical users
  • Learning curve to develop customizations with plugins

Deepgram

  • Pricing is entirely usage-based, so total cost can be harder to predict than flat subscription tools.
  • The Growth plan requires a minimum $4K/year commitment to unlock discounted rates.
  • Enterprise features and custom SLAs require a direct sales conversation rather than self-serve signup.
  • Some promotional per-minute rates are time-limited, meaning long-term pricing may differ from current promotional rates.

Pricing, plan by plan

Vellum

Free
  • FreeFree
    • Starter credits included
    • Basic features
  • Mighty$30/month
    • 1 vCPU, 2 GiB RAM
    • 10 GB storage
    • Included usage allowance
  • Super$100/month
    • 2.5 vCPU, 5 GiB RAM
    • 30 GB storage
    • Assistant email and subdomain
  • Ultra$200/month
    • 4 vCPU, 8 GiB RAM
    • 60 GB storage
    • Assistant email and subdomain

Deepgram

Free
  • Pay As You Go$undefined/mo
    • $200 free credit to start
    • No minimums or expiration
    • No credit card required to start
  • Growth$undefined/mo
    • Save up to 20% with annual pre-paid credits
    • Minimum $4K/year commitment
    • Credits applied against actual usage
  • Enterprise$undefined/mo
    • Custom pricing for large-scale deployments
    • Dedicated support and contracts

Which should you pick?

Choose Vellum if

  • You need persistent ai identity.
  • You want to start without paying.
  • You work on Web, macOS, iOS, Slack, Telegram, Terminal.
  • You also want long-term memory.
Vellum review

Choose Deepgram if

  • You need flux speech-to-text.
  • You want to start without paying.
  • You work on web, api.
  • You also want flux text-to-speech.
Deepgram review

Questions people ask

Is Vellum or Deepgram better?
Neither clearly leads. Vellum starts at Free and Deepgram at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Vellum or Deepgram?
Vellum starts at Free and Deepgram at Free.
Does Vellum or Deepgram run on more platforms?
Vellum runs on Web, macOS, iOS, Slack, Telegram, Terminal. Deepgram runs on web, api.
Can I use Vellum for free?
Both have a free tier, so you can try either at no cost before committing.
What is Vellum best used for?
Vellum is most often used for personal productivity automation across email and calendar, crm updates and pipeline management, expense report generation and management, document drafting and content creation. Of those, personal productivity automation across email and calendar and crm updates and pipeline management are not what Deepgram is typically brought in for.
What can Vellum do that Deepgram cannot?
Vellum covers Persistent AI identity, Long-term memory, Email automation, Calendar management. Deepgram covers Flux speech-to-text, Flux text-to-speech, Voice Agent API, Real-time and batch processing.

Answered from the vendors’ own pages

Vellum: How does Vellum protect my data privacy?

Vellum uses permission-based controls requiring explicit approval for sensitive actions. Data is encrypted and the option for self-hosting provides complete data control. Open-source deployment option allows hosting on your own infrastructure.

Source
Deepgram: What does Deepgram cost?

Deepgram uses usage-based pricing starting with $200 in free credit, pay-as-you-go rates per minute or per character, a Growth plan with annual pre-paid credits requiring a $4K/year minimum, and custom Enterprise pricing.

Source
Vellum: Can I use Vellum for business team collaboration?

Vellum is primarily designed as a personal assistant with persistent identity. For team collaboration, platforms like Lindy offer better multi-user features with shared credit pools and Slack workspace integration.

Source
Deepgram: Is there a free plan, and what are its limits?

New users get $200 of free credit with no credit card required, which can be applied to speech-to-text, text-to-speech, or voice agent usage before any payment is needed.

Source
Vellum: What does the free tier include?

Vellum offers free starter credits to begin using the platform. Beyond that, it operates on a pay-as-you-go credit model with paid tiers starting at $30/month for increased computational resources and bundled credits.

Source
Deepgram: How is usage metered?

Usage is metered per minute of audio for speech-to-text and voice agent calls, and per 1,000 characters for text-to-speech, with add-ons like redaction and entity detection billed separately per minute.

Source
Share

Related pages

More on Vellum

More on Deepgram

Keep looking

Other head to heads