Comparison

Microsoft Prompt Flow vs Vellum

On the evidence we track, Vellum leads this comparison with a composite score of 57/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

Machine formatsMarkdownJSONGraphQLMarkdown is open. JSON and GraphQL need a free key.
Microsoft Prompt Flow40
★Vellum57
Score
vioscaleAI score
Microsoft Prompt Flow40 / 100medium · 53%
Vellum57 / 100low · 35%
Pricing
Free tier
Microsoft Prompt Flow–
Vellum✓
Model
Microsoft Prompt Flow–
Vellumfreemium
Price level
Microsoft Prompt Flow–
Vellummid
Starting price
Microsoft Prompt Flow–
Vellum$30
Transparent
Microsoft Prompt Flow–
Vellum✓
Integrations
Count
Microsoft Prompt Flow2
Vellum3
Adoption
Dependent repos
Microsoft Prompt Flow1
Vellum–
Github stars
Microsoft Prompt Flow11,253
Vellum–
Activity
Commits last 30d
Microsoft Prompt Flow0
Vellum–
Release
Cadence days
Microsoft Prompt Flow13
Vellum–
History
Microsoft Prompt Flow20 items
Vellum–
License
Spdx
Microsoft Prompt FlowMIT
Vellum–
Language
Primary
Microsoft Prompt FlowPython
Vellum–
Market
Availability
Microsoft Prompt Flow–
Content
Faq
Microsoft Prompt Flow4 items
Vellum6 items

Capabilities

Feature-by-feature on the axes that matter for prompt management. “-” means undocumented, not absent.

Capabilities
Versioning model
Microsoft Prompt FlowHybrid
Vellum-
Diff and rollback
Microsoft Prompt Flow-
Vellum-
Deploy without redeploy
Microsoft Prompt Flow-
Vellum-
Non engineer editing
Microsoft Prompt Flow-
Vellum✓
Multi model playground
Microsoft Prompt Flow-
Vellum✓
Ab testing
Microsoft Prompt Flow-
Vellum-
LLM judge or human eval
Microsoft Prompt Flow-
Vellum-
Multi step flows
Microsoft Prompt Flow✓
Vellum✓
Approval workflow
Microsoft Prompt Flow-
Vellum✓
Tracing included
Microsoft Prompt Flow✓
Vellum-
Self hostable
Microsoft Prompt Flow✓
Vellum✓
Deployment model
Microsoft Prompt Flow-
VellumManaged SaaS
Pricing model
Microsoft Prompt FlowOpen source self host
VellumUsage/seat based saas

What each one is

The product in its own terms, so the numbers below have context.

Microsoft Prompt Flow

A development platform that supports the complete workflow of creating AI applications using large language models, from prototyping and debugging through testing, performance evaluation, and cloud deployment. Includes integrated tracing, evaluation frameworks, and support for both local and cloud-based execution.

Independently observed

Vellum

Leader

A personal AI assistant that runs locally or in the cloud, maintains long-term memory, automates tasks across your tools and files, and is available across all your devices.

Independently observed

Pricing

List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.

Microsoft Prompt Flow

Pricing not documented yet.

Vellum

Leader
from $30/moHybridFree tier

Free to download and run locally, or from $30/month for cloud hosting

  • Free (Local)Free
  • Mighty$30/mo
  • Super$100/mo
  • Ultra$200/mo
as of verify ↗

Platform & deployment

Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.

Platforms
Web
Microsoft Prompt Flow✓
Vellum✓
iOS
Microsoft Prompt Flow✗
Vellum✓
Android
Microsoft Prompt Flow✗
Vellum✓
macOS
Microsoft Prompt Flow✗
Vellum✓
CLI
Microsoft Prompt Flow✓
Vellum✓
Deployment
Cloud / SaaS
Microsoft Prompt Flow✓
Vellum✓
Self-hosted
Microsoft Prompt Flow✓
Vellum✓
Hybrid
Microsoft Prompt Flow✗
Vellum✓

Integrations

What each product connects to. Counts come from the vendor's own integration directory where one exists.

Microsoft Prompt Flow

2 total
  • OpenAI
  • Azure OpenAI
Independently observed

Vellum

Leader
13 total
  • Gmail
  • Google Calendar
  • Slack
  • Telegram
  • Web browsing
  • Computer control
  • Phone calls
  • Image generation
  • Coding
  • App building
  • Task management
  • Google Workspace
  • Notion
Independently observed
Still deciding?

Microsoft Prompt Flow or Vellum: which one depends on you

A composite score cannot know your constraints. Describe them and both get re-weighted against what you actually need, with the evidence behind every position.

Free to run, no account needed to start. How the evaluation works

Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.