Best Open-Source LLM API Providers

Open-source LLM API providers supply standardized HTTP APIs for accessing large language models in applications such as text generation, chatbots, and code assistance. Entries include self-hostable servers and community-hosted proxies with fully open-source codebases, excluding proprietary services and local inference tools without API endpoints. Primary decision factors are model support breadth, inference speed, deployment scalability, and ongoing maintenance activity.