Free Alternatives To OpenRouter

AI

Explore free alternatives to OpenRouter for accessing multiple AI models via one API, provider routing, and AI app development, with free plans.

OpenRouter is a unified AI API platform that lets developers access hundreds of models and providers through one OpenAI-compatible interface. It is designed for building apps with flexible model routing, fallbacks, standardized tool calling, and pay-as-you-go access across many providers. OpenRouter is mainly used by developers and teams that want one gateway for comparing, switching, and scaling AI model usage efficiently.

Official site

10 alternatives

• 

  Cloudflare AI Gateway

  Completely free foreverOfficial site

  Highlights

  • Cloudflare says its AI Gateway core features are free on all plans, including analytics, caching, and rate limiting. This is a good fit if you want a managed gateway and are okay with BYOK.

  Best for: best for a completely free managed gateway layer when you mainly want analytics, logging, caching, rate limiting, retries, and control across multiple providers without paying for the gateway itself.

  Cloudflare AI Gateway is a managed layer for routing AI requests through one endpoint. It gives teams analytics, logging, caching, rate limiting, retries, and fallback controls to monitor usage and improve reliability across AI applications.

• 

  Helicone AI Gateway

  Free plan with limited featuresOfficial site

  Highlights

  • free Hobby tier with 10,000 free requests, 1 GB storage, and a unified AI gateway.

  Best for: best for a free hosted starter setup if your main goal is testing or small projects with 10,000 free requests on the Hobby tier.

  Helicone is an OpenAI-compatible AI gateway and observability platform that lets developers access 100+ models through one interface. It focuses on routing, fallbacks, monitoring, and usage visibility for LLM-powered apps and workflows.

• 

  Portkey AI Gateway

  Free plan with limited featuresOfficial site

  Highlights

  • Portkey documents a free Dev plan with 10k requests/month.

  Best for: best for a free managed gateway with higher-end routing features when you want to try a more production-style setup on its free 10k requests/month Dev plan or use its open-source gateway.

  Portkey is an enterprise AI gateway and production stack for GenAI teams. It connects many models through one API and adds observability, caching, load balancing, automated fallbacks, guardrails, and governance features for production deployments.

• 

  Vercel AI Gateway

  Free plan with limited featuresOfficial site

  Highlights

  • Vercel offers a free tier with $5/month included credits and access to all available models.

  Best for: best for trying premium models with free credits because Vercel gives $5 every 30 days and says the free tier includes all available models.

  Vercel AI Gateway provides a unified API for accessing hundreds of AI models from one endpoint. It includes budgets, usage monitoring, load balancing, and fallback management, helping developers ship and manage AI features with a simpler workflow.

• 

  LiteLLM

  Free open-source/self-hosted optionOfficial site

  Highlights

  • open-source, self-hosted OpenAI-compatible gateway/proxy with a unified interface for 100+ LLMs.

  Best for: best for a free self-hosted OpenRouter-style proxy if you want a single OpenAI-compatible interface for 100+ LLMs and are okay bringing your own provider keys.

  LiteLLM is an OpenAI-format LLM gateway and proxy for working with 100+ models through one interface. It is built for authentication, load balancing, spend tracking, budgeting, and centralized control across multiple AI providers and teams.

• 

  Bifrost

  Free open-source/self-hosted optionOfficial site

  Highlights

  • open-source AI gateway on GitHub that unifies multiple providers behind a single OpenAI-compatible API.

  Best for: best for a free open-source gateway with built-in failover/load balancing ideas if you want a more infrastructure-style alternative you can run yourself.

  Bifrost is an AI gateway designed to unify access to models from multiple providers through an OpenAI-compatible API. It emphasizes fast setup, production readiness, budgeting, fallback support, and infrastructure control for scaling AI applications.

• 

  Puter.js

  No credit card required to startOfficial site

  Highlights

  • good if you want access to multiple models from one API/frontend layer. Puter says it supports models from OpenAI, Anthropic, Google, Mistral and more, with no API keys required, and its tutorials market several model APIs as free.

  Best for: best for frontend projects that want free model access without API keys. Its big free advantage is no backend, no API keys, and no setup, which is very different from OpenRouter but useful for lightweight apps and experiments.

  Puter.js is a JavaScript library that brings AI, storage, database, and auth features directly to frontend apps. It lets developers access hundreds of AI models from providers like OpenAI and Anthropic without needing API keys or backend setup.

• 

  LangDB

  Free open-source/self-hosted optionOfficial site

  Highlights

  • offers a hosted AI gateway and also documents a self-hosted option, so it fits free open-source/self-hosted option if that is your main requirement.

  Best for: best for teams that want a free self-hosted gateway with more control, especially if the attractive free part for you is the open-source local deployment rather than a hosted free tier.

  LangDB is an AI gateway platform built for speed, scalability, and operational control. It offers access to many models along with analytics, tracing, cost controls, and enterprise tooling for teams managing AI usage in production.

• 

  LLM Gateway

  No credit card required to startOfficial site

  Highlights

  • explicitly says it has a free tier included and no credit card required.

  Best for: best for people who want a true no-card starting point. Its free angle is strongest if your priority is simply start free, no credit card, and test multiple providers quickly.

  LLM Gateway is a hosted service positioned as a simple way to start working with multiple LLM providers through one gateway. Its main appeal is quick setup, a free tier, and no-credit-card onboarding for early testing and experimentation.

• 

  Google Vertex AI Express Mode

  No credit card required to startOfficial site

  Highlights

  • not the same type of product as OpenRouter, but it can work as a model-access alternative for testing because Google says new users can try it in a free tier for up to 90 days and billing info is not required for that tier

  Best for: best for temporary free testing without billing setup. It is useful when your priority is trying Google’s model access flow free for up to 90 days without adding billing info first.

  Vertex AI Express Mode is Google Cloud’s lighter entry point for trying generative AI features. It is designed to let new users test model access quickly with a simpler starting flow before moving into broader Vertex AI usage.