These tools integrates with

MastravsOpenAI API

TypeScript AI agent framework by Vercel contributors versus GPT-4o, o1, and embeddings 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
●80 — Active
—

Mastra

TypeScript-first framework for building AI agents and workflows. Supports tool use, memory, RAG, and evals with first-class Vercel AI SDK integration.

Website ↗GitHub ↗

OpenAI API

API access to GPT-4o, o1, and other OpenAI models including embeddings and image generation. The most widely used LLM API in production.

Website ↗

Shared Connections3 tools both integrate with

Anthropic APILangfuseVercel AI SDK

Only Mastra (1)

OpenAI API

Only OpenAI API (27)

CrewAILlamaIndexAutoGenPydanticAIsmolagentsAgnoLangChainLiteLLMHeliconeMastra

Explore the full AI landscape

See how Mastra and OpenAI API fit into the bigger picture — 207 tools, 452 relationships, all mapped.

Open in Explore →