# Microsoft Prompt Flow vs Vellum

**Leader by Vioscale score:** Vellum

| Attribute | Microsoft Prompt Flow | Vellum |
|---|---|---|
| **Vioscale score** | 30.3 (16% (low)) | 66.9 (37% (low)) |
| activity.commits_last_30d | 0 | - |
| adoption.dependent_repos | 1 | - |
| adoption.github_stars | 11,229 | - |
| deployment.options | `{"cloud":true,"self_hosted":true}` | `{"cloud":true}` |
| description.long | Provides integrated tools for the complete development lifecycle of AI applications powered by large language models, from initial design through prototyping, testing, evaluation, and production deployment with monitoring. | A cloud-based AI assistant that maintains continuous context about your preferences and history, accessible via web, desktop, mobile, and messaging platforms, capable of automating tasks like email, calendar management, and web browsing with your explicit approval for each action. |
| features.capabilities | - | `{"pricing_model":"usage/seat-based-saas","deployment_model":"managed-SaaS","multi_step_flows":true,"approval_workflow":true,"non_engineer_editing":true}` |
| integrations.count | - | 11 |
| integrations.list | - | `[{"name":"Gmail"},{"name":"Google Calendar"},{"name":"Slack"},{"name":"Telegram"},{"name":"Web browsing"},{"name":"Computer control"},{"name":"Phone calls"},{"name":"Image generation"},{"name":"Coding"},{"name":"App building"},{"name":"Task management"}]` |
| language.primary | Python | - |
| license.spdx | MIT | - |
| market.availability | - | `{"primaryMarkets":["US"],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` |
| platform.support | `{"cli":true}` | `{"cli":true,"ios":true,"mac":true,"web":true}` |
| pricing | - | `{"type":"hybrid","plans":[{"free":true,"name":"Free","summary":"Free with starter credits","features":["Free starter credits","Multi-platform access","Memory and context"],"description":"Free credits to start","contactSales":false},{"free":false,"name":"Paid","summary":"$30/mo","features":["Larger machine","More storage","Bundled credits"],"commitment":"monthly","components":[{"kind":"fixed","amount":30,"period":"month","currency":"USD"}],"description":"Larger machine, more storage, bundled credits","contactSales":false}],"summary":"Free tier with credits, paid plans from $30/mo","currency":"USD","freeTier":true,"sourceUrl":"https://vellum.ai","retrievedAt":"2026-08-21T13:54:36.865Z","startingPrice":{"amount":30,"period":"month","currency":"USD"},"billingPeriods":["month"]}` |
| pricing.free_tier | - | yes |
| pricing.model | - | freemium |
| pricing.price_level | - | mid |
| pricing.starting_price | - | `{"amount":30,"currency":"USD"}` |
| pricing.transparent | - | yes |
| release.cadence_days | 13 | - |
| release.history | `[{"url":"https://github.com/microsoft/promptflow/releases/tag/promptflow_1.17.1","date":"2025-01-09T21:00:17Z","type":"stable","version":"promptflow_1.17.1"},{"url":"https://github.com/microsoft/promptflow/releases/tag/promptflow_1.17.0","date":"2025-01-06T20:04:04Z","type":"stable","version":"promptflow_1.17.0"},{"url":"https://github.com/microsoft/promptflow/releases/tag/promptflow_1.16.2","date":"2024-11-25T21:07:56Z","type":"stable","version":"promptflow_1.16.2"},{"url":"https://github.com/microsoft/promptflow/releases/tag/promptflow_1.16.1","date":"2024-10-08T18:55:50Z","type":"stable","version":"promptflow_1.16.1"},{"url":"https://github.com/microsoft/promptflow/releases/tag/promptflow_1.16.0","date":"2024-09-30T16:42:02Z","type":"stable","version":"promptflow_1.16.0"},{"url":"https://github.com/microsoft/promptflow/releases/tag/promptflow_1.15.0.post1","date":"2024-09-23T18:57:51Z","type":"stable","version":"promptflow_1.15.0.post1"},{"url":"https://github.com/microsoft/promptflow/releases/tag/promptflow_1.15.0","date":"2024-08-15T05:56:00Z","type":"stable","version":"promptflow_1.15.0"},{"url":"https://github.com/microsoft/promptflow/releases/tag/promptflow_1.14.0","date":"2024-07-26T02:57:50Z","type":"stable","version":"promptflow_1.14.0"},{"url":"https://github.com/microsoft/promptflow/releases/tag/promptflow_1.12.0","date":"2024-06-11T08:58:23Z","type":"stable","version":"promptflow_1.12.0"},{"url":"https://github.com/microsoft/promptflow/releases/tag/promptflow_1.11.0","date":"2024-05-17T07:13:07Z","type":"stable","version":"promptflow_1.11.0"},{"url":"https://github.com/microsoft/promptflow/releases/tag/promptflow_1.10.1","date":"2024-05-10T08:29:44Z","type":"stable","version":"promptflow_1.10.1"},{"url":"https://github.com/microsoft/promptflow/releases/tag/promptflow_1.10.0","date":"2024-04-26T14:28:24Z","type":"stable","version":"promptflow_1.10.0"},{"url":"https://github.com/microsoft/promptflow/releases/tag/promptflow_1.9.0","date":"2024-04-17T11:06:50Z","type":"stable","version":"promptflow_1.9.0"},{"url":"https://github.com/microsoft/promptflow/releases/tag/promptflow_1.8.0","date":"2024-04-10T11:57:28Z","type":"stable","version":"promptflow_1.8.0"},{"url":"https://github.com/microsoft/promptflow/releases/tag/v1.4.0-tools","date":"2024-03-26T10:13:11Z","type":"stable","version":"v1.4.0-tools"},{"url":"https://github.com/microsoft/promptflow/releases/tag/promptflow_1.7.0","date":"2024-03-25T02:47:56Z","type":"stable","version":"promptflow_1.7.0"},{"url":"https://github.com/microsoft/promptflow/releases/tag/v1.3.0-tools","date":"2024-03-01T10:08:22Z","type":"stable","version":"v1.3.0-tools"},{"url":"https://github.com/microsoft/promptflow/releases/tag/promptflow_1.6.0","date":"2024-03-01T09:34:19Z","type":"stable","version":"promptflow_1.6.0"},{"url":"https://github.com/microsoft/promptflow/releases/tag/v1.2.0-tools","date":"2024-02-07T02:40:43Z","type":"stable","version":"v1.2.0-tools"},{"url":"https://github.com/microsoft/promptflow/releases/tag/promptflow_1.5.0","date":"2024-02-06T10:56:28Z","type":"stable","version":"promptflow_1.5.0"}]` | - |
| security.vulnerabilities | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=pypi&package_name=promptflow&per_page=100","last_12m":0,"max_severity":null}` | - |

## Capabilities (Prompt Management)

| Capability | Microsoft Prompt Flow | Vellum |
|---|:--:|:--:|
| **Capabilities** |  |  |
| Versioning model | - | - |
| Diff and rollback | - | - |
| Deploy without redeploy | - | - |
| Non engineer editing | - | ✓ |
| Multi model playground | - | - |
| Ab testing | - | - |
| LLM judge or human eval | - | - |
| Multi step flows | - | ✓ |
| Approval workflow | - | ✓ |
| Tracing included | - | - |
| Self hostable | - | - |
| Deployment model | - | Managed SaaS |
| Pricing model | - | Usage/seat based saas |

*Source: Vioscale. Generated 2026-09-01T17:07:20.491Z. "-" = undocumented, not absent.*