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Best One API alternatives

Looking beyond One API? These 12 tools cover the same job, matched on what each one does. Compare pricing here and open any listing for its pros and cons.

Claude Relay Service logo

Claude Relay Service - self-hosted AI API relay hub

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Open-source AI coding assistant for self-hosted deployments

APIMart logo

One OpenAI-compatible API key for 500+ chat, image, video, and audio models, including GPT-5, Claude, Sora 2, Veo 3.1, and Nano Banana, at discounted per-request prices.

Noodl: Open-Source Low-Code Builder, AI & Alternatives logo

Technical low-code teams that want a visual React builder and are comfortable self-hosting

Langfuse logo

Langfuse - Open-Source LLM Observability and Evals

SciPhi: Historical Overview of the R2R Cloud Platform logo

SciPhi was a hosted platform for deploying the open-source R2R retrieval system. The SciPhi cloud service is no longer active under that name.

Multica logo

Multica - Open-Source Managed Agents Platform for Teams

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Open-source Copilot alternative for VS Code

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Inkeep review covering its no-code and TypeScript agent builder, managed RAG, CX workflows, open-source pricing, security, limitations, and alternatives.

DeepSeek Coder logo

DeepSeek-Coder: Open-source, project-aware code models with SOTA performance and massive context.

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An open-source SDK that turns source code into a queryable, LLM-ready knowledge base with semantic search.

Claude Code Security Review logo

Claude Code Security Review - AI GitHub Security Action