OpenRouter
#1Choose OpenRouter if you need to call it from your own code, or if your work leans toward api.
PaidAPI
At a glance
AI/ML API vs 9All 9 alternatives
Ranked by upvotes
Portkey
#2Choose Portkey if your work leans toward llm.
Paid
Together AI
#3Choose Together AI if you need to self-host or audit the source, or if your work leans toward fine tuning.
PaidOpen source
Calmo
#4Also does rag, like AI/ML API. Choose Calmo if your work leans toward customer support, automation.
Paid1
Capacity
#5Also does rag, like AI/ML API. Choose Capacity if your work leans toward customer support, automation.
Paid
ChatGPT prompt engineering for developers
#6Also does education, like AI/ML API. Choose ChatGPT prompt engineering for developers if your work leans toward prompt engineering, summarization.
Paid
Ghostwriter
#7Also does education, like AI/ML API. Choose Ghostwriter if your work leans toward autocomplete, debugging, ide.
Paid
Haystack
#8Also does rag, like AI/ML API. Choose Haystack if you need to self-host or audit the source, or if your work leans toward llm, search.
PaidOpen source
LangChain
#9Also does rag, like AI/ML API. Choose LangChain if you need to self-host or audit the source, or if your work leans toward llm.
PaidOpen source