These tools competes with
Together AIvsOpenAI API
Fast inference API for open-source models versus GPT-4o, o1, and embeddings from OpenAI
Compare interactively in Explore →Choose Together AI when…
- •You want fast, affordable inference on open models
- •Fine-tuning on open-source models is on your roadmap
- •You need a scalable alternative to OpenAI for open models
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
Together AI
OpenAI API
Category
LLM Infrastructure
LLM Infrastructure
Type
Commercial
Commercial
Free Tier
✓ Yes
✗ No
Pricing Plans
API: Per token
API: Per token
GitHub Stars
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Health
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Together AI
Inference API with 200+ open-source models at competitive speeds. Popular for running Llama, Mistral, and other open models at scale.
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.
Shared Connections2 tools both integrate with
Only Together AI (6)
OpenRoutervLLMFireworks AIOpenAI APIHuggingFaceDeepInfra
Only OpenAI API (28)
CrewAILlamaIndexAutoGenPydanticAIsmolagentsAgnoLangChainLangfuseHeliconeMastra
Explore the full AI landscape
See how Together AI and OpenAI API fit into the bigger picture — 207 tools, 452 relationships, all mapped.