Side-by-side

Vellum vs Portkey

VellumPortkey

Bottom line: Vellum for teams wanting an all-in-one build-evaluate-deploy platform; Portkey for teams routing production traffic across many LLMs.

	Vellum Build, evaluate, and deploy LLM apps and agents with confidence. Visit	Portkey Open-source AI gateway and control plane for production Gen AI. Visit
Votes	0	0
Pricing	Freemium	Freemium
Category	Coding	Coding
Tags	llmopsai-agentsprompt-engineeringevaluationworkflow	ai-gatewayllmopsopen-sourceobservabilitygovernance
Best for	Teams wanting an all-in-one build-evaluate-deploy platform Cross-functional groups with technical and non-technical members Regulated sectors needing VPC or HIPAA options	Teams routing production traffic across many LLMs Organizations needing governance and reliability tooling Developers wanting an open-source, self-hostable gateway
Pros	Combines prompt, workflow, evaluation, and deployment in one platform Visual workflow builder lowers the barrier for cross-functional collaborators Solid evaluation and testing tooling for pre-production quality gates Multi-provider model support avoids lock-in Free tier lets teams trial without a credit card	Fully open-source, self-hostable gateway for data control and no lock-in Access to more than 1,600 models through one API Broad feature set spanning observability, guardrails, routing, prompts, and cost control Transparent, relatively cheap entry with free and ~$49 tiers Battle-tested at very large scale
Cons	Pricing is opaque and sales-led, making budgeting hard Not open source, and self-hosting is locked to Enterprise Free tier is quite limited in credits, documents, and seats Smaller company and funding than infrastructure incumbents Frequent repositioning can mean shifting product focus	Adds a network hop and dependency in the critical request path Log-volume-based pricing can get complex or expensive at scale Free-tier logging caps and short retention are tight for real debugging Self-hosting the open-source gateway shifts ops burden to you It is a gateway and ops layer, not a full build-and-eval IDE

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