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AI · head to head

Inflection AI vs Vellum

Inflection AI logo

Inflection AI

AI

Personal AI for everyone

From
Free
Rated
-
Full reviewWebsite
Vellum logo

Vellum

AI

Personalized AI assistant with persistent memory and autonomous action-taking

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Inflection AI inflection AIs consumer product Pi is distributed as a free app with no subscription tiers or in-app purchases named in its App Store listing; Vellum pricing varies significantly by computational tier, making budget planning difficult
  • They diverge on capability: Inflection AI covers Personal AI, Vellum covers Persistent AI identity.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Inflection AI and Vellum actually diverge.

Attributes where Inflection AI and Vellum differ
AttributeInflection AIVellum
Pricing modelfreeFreemium with paid plans and pay-as-you-go credits
PlatformsWeb, Ios, AndroidWeb, macOS, iOS, Slack, Telegram, Terminal
Founded2022Unknown

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 Inflection AI

  • Personal AI
  • Conversational interface
  • Voice interaction
  • Cross-platform
  • Pi app
  • Web interface
  • Web support
  • Ios support

Only in Vellum

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

What people use each for

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

Inflection AI

  • ai tools managementnot Vellum
  • Workflow automationnot Vellum
  • Reportingnot Vellum

Vellum

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

Where each one falls short

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

Inflection AI

  • Inflection AIs consumer product Pi is distributed as a free app with no subscription tiers or in-app purchases named in its App Store listing

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

Pricing, plan by plan

Inflection AI

Free
  • FreeFree
    • Access to Pi
    • Unlimited usage

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

Which should you pick?

Choose Inflection AI if

  • You need personal ai.
  • You want to start without paying.
  • You work on Web, Ios, Android.
  • You also want conversational interface.
Inflection AI review

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

Questions people ask

Is Inflection AI or Vellum better?
Neither clearly leads. Inflection AI starts at Free and Vellum at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Inflection AI or Vellum?
Inflection AI starts at Free and Vellum at Free.
Does Inflection AI or Vellum run on more platforms?
Inflection AI runs on Web, Ios, Android. Vellum runs on Web, macOS, iOS, Slack, Telegram, Terminal.
Can I use Inflection AI for free?
Both have a free tier, so you can try either at no cost before committing.
What is Inflection AI best used for?
Inflection AI is most often used for ai tools management, workflow automation, reporting. Of those, ai tools management and workflow automation are not what Vellum is typically brought in for.
What can Inflection AI do that Vellum cannot?
Inflection AI covers Personal AI, Conversational interface, Voice interaction, Cross-platform. Vellum covers Persistent AI identity, Long-term memory, Email automation, Calendar management.

Answered from the vendors’ own pages

Inflection AI: Is Inflection AI's Pi service free to use?

The website invites users to 'Try Pi' but does not disclose pricing details, whether there is a free tier, usage limits, or what happens after a trial period.

Source
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
Inflection AI: Does Pi have a paid tier or premium features?

Pricing information is not published on Inflection's main website. Users must try the Pi platform or contact support to learn about premium options or costs.

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
Inflection AI: What commercial terms apply to using Pi?

Inflection does not disclose subscription models, pricing tiers, commercial licenses, or terms of service on their homepage, directing questions to support channels.

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
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