If you're looking for another Merlin API alternative, LLMStack is worth a look. It's an open-source foundation for building AI apps with language models from companies like OpenAI and Hugging Face. It's got a no-code builder for combining multiple LLMs with data and business processes, so you don't necessarily need to be a programmer to use it. LLMStack can run in the cloud or on-premises, so you can use it in a variety of situations, like building chatbots and AI assistants.
Another option is Abacus.AI, which offers a suite of tools for building and running AI agents and systems at large scale. It supports a variety of generative AI methods and has products like ChatLLM for RAG systems and predictive analytics. Abacus.AI has high availability and governance features, so it's a good option for enterprise applications that need more sophisticated AI abilities.
Also worth considering is ThirdAI, which offers a foundation for using large language models and other AI technology without requiring special hardware. It offers features like document intelligence and generative AI for summarizing documents. With its focus on ease of integration and tiered pricing plans, ThirdAI can easily slot into your existing workflows and infrastructure.
Last, Chariot offers a foundation for adding natural language abilities to your apps. It supports GPT-3.5 and GPT-4 models and offers tools for handling conversations, processing documents and generating text embeddings. With SDKs for Node.js, Python and .NET, Chariot is designed to be highly integrable and accessible to developers who want to bring new language processing abilities to their apps.