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Dev tools · alternatives · 2026

24 alternatives to OpenAI API Proxy

Provides the same proxy OpenAI API for different LLM models

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Prices are shown for the 1 we have checked on their own sites, 1 of them free or with a free tier. OpenAI API Proxy launched in 2024; newer entries below may have overtaken it.

  1. 1
    LLM Gatewayfree tier▲296

    I built an OpenAI-compatible LLM gateway that routes requests to OpenAI, Anthropic, Ollama, vLLM, llama-server, SGLang... anything that speaks /v1/chat/completions. Single Go binary, one YAML config file, no infrastructure. It does the things you'd expect from this kind of gateway... semantic routing via a three-layer cascade (keyword heuristics, embedding similarity, LLM classifier) that picks the best model when clients omit the model field, weighted round-robin load balancing across local inference servers with health checks and failover. The part I think is most…

    2025 · llmgateway.io · its alternatives →

  2. 2

    Proxy remote LLM API as Ollama and LM Studio, for using them in JetBrains AI Assistant - Stream29/ProxyAsLocalModel

    2025 · github.com · its alternatives →

  3. 3

    Access 1 billion tokens per month for free

    Apr 2026 · github.com · its alternatives →

  4. 4

    Introducing Braintrust's latest feature: an AI proxy that lets you use open source models like LLaMa 2 and Mistral, as well as all of OpenAI's and Anthropic's models, behind a single interface with caching, security, and API key management built in.

    2023 · braintrustdata.com · its alternatives →

  5. 5

    Talk to multiple LLMs thru a unified API

    2025 · ai-gateway.dev · its alternatives →

  6. 6

    ✦ Gemini ➜ OpenAI API proxy. Serverless! Contribute to PublicAffairs/openai-gemini development by creating an account on GitHub.

    2024 · github.com · its alternatives →

  7. 7
    Tokenwise▲143

    A smart LLM proxy that shows where you're overpaying

    Jun 2026 · tokenwisehq.com · its alternatives →

  8. 8

    One unified API for all AI models like Gemini, GPT-4, DALL-E

    2023 · getmerlin.in · its alternatives →

  9. 9

    Hello hacker news, I’m the maintainer of liteLLM() - package to simplify input/output to OpenAI, Azure, Cohere, Anthropic, Hugging face API Endpoints: https://github.com/BerriAI/litellm/ We’re open sourcing our implementation of liteLLM proxy: https://github.com/BerriAI/litellm/blob/main/cookbook/proxy-... TLDR: It has one API endpoint /chat/completions and standardizes input/output for 50+ LLM models + handles logging, error tracking, caching, streaming What can liteLLM proxy do? - It’s a central place to…

    2023 · github.com · its alternatives →

  10. 10
    CtrlAI▲104

    Transparent proxy that secures AI agents with guardrails

    Mar 2026 · github.com · its alternatives →

  11. 11

    Hey HN, I am proud to show you guys that I have built an open source alternative to Azure OpenAI services. Azure OpenAI services was born out of companies needing enhanced security and access control for using different GPT models. I want to build an OSS version of Azure OpenAI services that people could self host in their own infrastructure. "How can I track LLM spend per API key?" "Can I create a development OpenAI API key with limited access for Bob?" "Can I see my LLM spend breakdown by models and endpoints?" "Can I create 100 OpenAI API keys that my students could use in a classroom…

    2023 · github.com · its alternatives →

  12. 12

    The fast, easy and cheap OpenAI alternative

    2023 · lemonfox.ai · its alternatives →

  13. 13

    Avoid OpenAI downtimes - one API for 30+ LLMs

    2023 · github.com · its alternatives →

  14. 14

    Hey HN, We've been building a multi-model API for LLMs called OpenRouter since we launched the Window AI extension in April this year [0]. The events of the last week make it clear the LLM landscape is unpredictable, so LLM aggregators are picking up interest. Unlike others, we're making a router on top of a public, explorable dataset. We recently built a way to rank and visualize this data, including the token counts we see going to and from different models, both open-sourced (like Llama, Mistral, finetunes, and variants) and closed-sourced (OpenAI, Anthropic). The API supports - 50+…

    Apr 2026 · openrouter.ai · its alternatives →

  15. 15
    COO▲9

    COO for Our Large Language Model Providers

    2025 · coo-llm.github.io · its alternatives →

  16. 16

    The easiest way to access frontier AI models.

    Aug 2026 · tokenharbor.ai · its alternatives →

  17. 17

    Access all AI models you need through a single, reliable API

    2025 · llmapi.in · its alternatives →

  18. 18AT

    I recently built a small open-source tool to benchmark different LLM API endpoints — including OpenAI, Claude, and self-hosted models (like llama.cpp). It runs a configurable number of test requests and reports two key metrics: • First-token latency (ms): How long it takes for the first token to appear • Output speed (tokens/sec): Overall output fluency Demo: https://llmapitest.com/ Code: https://github.com/qjr87/llm-api-test The goal is to provide a simple, visual, and reproducible way to evaluate performance across different LLM providers, including…

    2025 · llmapitest.com · its alternatives →

  19. 19

    i built an open source version of OpenAI Assistants API it's compatible with any LLM & embeddings model and u can swap it out for OpenAI assistants API with just one line of code. if you want this let me know 👇

    2023 · twitter.com · its alternatives →

  20. 20

    Unified AI Access One API, All Models

    2025 · its alternatives →

  21. 21

    Hey HN, I built browser-use, an open-source alternative to OpenAI’s Operator for browser-use systems, and here’s why I think it’s better: Flexibility: You can use any LLM with our tool – Gemini, Anthropic, Qwen, Llama, DeepSeek, and more. As new models improve, so does your agent. Open Source: No need to pay $200/month or endure long waitlists – it’s free and accessible to everyone today. Custom Automation: Our Python package allows you to build actual web automations. Your LLM can gain new tools, like file uploads. Cost: Our system is 30x cheaper than Operator, e.g., when used with…

    2025 · github.com · its alternatives →

  22. 22

    Serve LLMs privately with an OpenAI API compatible API

    2024 · github.com · its alternatives →

  23. 23

    High availability AI model APIs: ChatGPT, Claude 3, and more

    2024 · rapidapi.com · its alternatives →

  24. 24

    Universal API bridge for Gemini, Claude, and Qwen clients.

    Jan 2026 · github.com · its alternatives →

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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →