AutoGen vs Vellum
Compare coding AI Tools
Open source Microsoft framework for building multi agent AI apps with chat tool use function calling human in the loop and orchestration primitives for production workflows.
Vellum is an AI agent building platform that combines a prompt playground, evaluation tools, and hosted agent apps so teams can iterate on LLM workflows with debugging and knowledge base support, starting with a free tier and upgrading for more credits.
Feature Tags Comparison
Key Features
- Agent Roles: Define planner executor critic or custom roles
- Tool Calling: Register Python functions APIs or shell tasks
- Conversation Loop: Coordinate agent messages tool calls and human handoffs
- Memory and Logs: Persist conversations and tool results for debugging
- Deterministic Scripts: Encode repeatable dialogues for reliability
- Extensible Storage: Plug in vector stores and retrieval sources
- Free and Pro plans: Pricing starts at $0 with 50 credits and Pro at $25 with 200 builder credits so solo builders can scale testing
- Prompt playground: Compare models side by side and iterate prompts systematically instead of relying on subjective testing
- Evaluations framework: Run repeatable quality tests at scale to detect regressions and track improvements across prompt versions
- Hosted agent apps: Share working agents with teammates through hosted apps for demos
- reviews
- and stakeholder feedback cycles
Use Cases
- Customer Support Flows: Triage issues call CRM tools summarize tickets
- Data Processing: Pull files clean columns analyze and report
- Developer Copilots: Draft tests refactors open PRs with approval gates
- Research Assistants: Combine retrieval and critique roles with citations
- Operations Runbooks: Encode dialogues that escalate to humans with logs
- Marketing Drafts: Connect CMS analytics to propose briefs and drafts
- Agent prototyping: Build an agent by chatting with AI then refine logic with low code steps and controlled prompt versions
- Prompt iteration: Compare LLM outputs side by side and select prompts that improve accuracy and reduce unwanted variation
- Regression testing: Run evaluations on a saved dataset before release to catch quality drops after model or prompt changes
- RAG apps: Attach a knowledge base and test retrieval behavior with representative questions and strict document scope rules
- Stakeholder demos: Publish hosted agent apps so product and compliance reviewers can test behavior without local setup steps
- Model selection: Evaluate providers and self hosted options with the same tasks to choose the best cost and latency mix for production
Perfect For
Software engineers, platform teams, and researchers who need a flexible open source base to prototype and run multi agent systems with tool calling logging and human oversight
product managers, ML engineers, software engineers, data scientists, AI platform teams, prompt engineers, QA and reliability teams, startups building LLM features, teams shipping agent workflows
Capabilities
Need more details? Visit the full tool pages.





