Vellum is a strong platform for building and evaluating LLM applications — but it’s a build-and-test platform for developers, which differs from osFoundry, an implemented “Hybrid AI Orchestration Platform.” Here’s a factual look for a US business, with sources cited. (dgm implements osFoundry, a separate company’s platform — we are not osFoundry.)
At a glance
| osFoundry | Vellum | |
|---|---|---|
| Core focus | Orchestration: agents, automations, apps | LLMOps / LLM-app dev platform |
| Who builds it | dgm implements it for you | Your developers / product team |
| Models | Bring your own, any provider | Model-agnostic (multi-provider) |
| Pricing | Via dgm: $399 / $3,999/mo | Free → ~$50/mo + usage → Enterprise |
| Strength | Implemented orchestration + consolidation | Prompt engineering, evals, monitoring |
What Vellum is
Vellum is an LLMOps / LLM-app development platform — a prompt-engineering editor with comparison modes, a visual workflow builder and SDKs, semantic search, systematic evaluations (including LLM-as-judge metrics), and monitoring. It’s built for developers and product teams to build, test, deploy, and monitor production LLM apps and agents, with particularly strong evaluation tooling.
osFoundry’s focus is different: an implemented orchestration layer for agents, automations, and apps with the explicit goal of consolidating overlapping SaaS — delivered by dgm rather than a platform your team builds on.
Models
Both are model-agnostic. Vellum’s multi-provider LLM support is core (including prompt comparison across models); osFoundry is likewise model-agnostic at the orchestration layer. Model flexibility is common ground; what differs is who does the building.
Security and data
Vellum is cloud-hosted by default but offers self-hosting on your own hardware/VPS/private cloud, with SOC 2 Type II, HIPAA (with BAA), configurable retention, and VPC deployment reported. With osFoundry, dgm confirms the equivalent controls against your requirements during the integration assessment, so non-developer teams get the review handled.
Pricing
Vellum has public, self-serve pricing: a free Base tier, a Pro plan around $50/month base plus usage-based add-ons and credits, and custom Enterprise, with self-hosting available. dgm’s osFoundry engagement pricing is fixed and public instead: $399 assessment and $3,999/month integration, with implementation included — a delivered system rather than a platform to build on.
Build-and-test platform vs implemented orchestration
The core difference is who builds it. Vellum is a platform developers use to build, evaluate, and monitor LLM apps — excellent if you have a team building AI features and want rigorous evaluation. osFoundry, via dgm, is implemented orchestration: a working system and SaaS consolidation delivered for you. For a product team building LLM features, Vellum is a strong tool; for a business that wants orchestration delivered, osFoundry fits better.
Who each is best for
Vellum is the stronger choice if your developers want a platform to build, test, and monitor LLM apps with strong evaluation tooling. osFoundry is the stronger choice if you want an implemented orchestration system and SaaS consolidation delivered for you.
Which should a US company choose?
If your developers want to build and rigorously evaluate LLM apps, Vellum is a strong platform. If you want orchestration and consolidation delivered as a working system, then osFoundry is the more direct fit. dgm assesses your goals, recommends the right path for a US business, and implements it end to end.