These tools integrates with

OpenAI APIvsOpenAI Agents SDK

GPT-4o, o1, and embeddings from OpenAI versus Production-grade multi-agent orchestration from OpenAI

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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

Choose OpenAI Agents SDK when…

  • •You're building multi-agent systems on top of OpenAI models
  • •You want explicit, auditable agent handoffs with full context passing
  • •You need a production-hardened framework with built-in tracing and guardrails

Side-by-side comparison

Field
OpenAI API
OpenAI Agents SDK
Category
LLM Infrastructure
Agent Frameworks
Type
Commercial
Open Source
Free Tier
✗ No
✓ Yes
Pricing Plans
API: Per token
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GitHub Stars
—
⭐ 12,000
Health
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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 ↗

OpenAI Agents SDK

OpenAI's production-grade agent framework, successor to Swarm. Core abstraction is explicit handoffs between agents carrying full context. Built for reliable multi-agent pipelines with native OpenAI tool use, tracing, and guardrails.

Website ↗GitHub ↗

Shared Connections1 tools both integrate with

CrewAI

Only OpenAI API (29)

LlamaIndexAutoGenPydanticAIsmolagentsAgnoLangChainLiteLLMLangfuseHeliconeMastra

Only OpenAI Agents SDK (3)

OpenAI APILangGraphGoogle Agent Development Kit

Explore the full AI landscape

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

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