These tools integrates with
MastravsOpenAI API
TypeScript AI agent framework by Vercel contributors versus GPT-5 era models, embeddings, and Responses API from OpenAI
Compare interactively in Explore →Choose Mastra when…
- •You're building TypeScript-native agentic workflows
- •You want a structured framework for agent + RAG apps
- •Node.js backend with AI logic is your stack
Choose OpenAI API when…
- •You need the broadest ecosystem and most integrations
- •GPT-4 or o-series reasoning models are required
- •Assistants API, fine-tuning, or batch API are needed
Side-by-side comparison
Field
Mastra
OpenAI API
Category
Agent Frameworks
LLM Infrastructure
Type
Open Source
Commercial
Free Tier
✓ Yes
✗ No
Pricing Plans
—
API: Per token
GitHub Stars
⭐ 8,000
—
Health
●95 — Active
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Mastra
TypeScript-first framework for building AI agents and workflows. Supports tool use, memory, RAG, and evals with first-class Vercel AI SDK integration.
OpenAI API
API access to GPT-5, GPT-5.5, o3/o4 reasoning models, and the Responses API; plus embeddings, image, audio, and Realtime endpoints. The most widely deployed LLM API in production.
Shared Connections3 tools both integrate with
Only Mastra (1)
OpenAI API
Only OpenAI API (36)
CrewAIAutoGenLlamaIndexLangChainPydanticAIsmolagentsAgnoMastraLiteLLMPortKey
Explore the full AI landscape
See how Mastra and OpenAI API fit into the bigger picture — 235 tools, 543 relationships, all mapped.