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OpenRouter

OpenRouter is an intermediary service that provides a single access point to dozens of language models from different providers. Instead of signing a contract and separately integrating each provider's interface, a developer connects to OpenRouter and can call different models through one standardised API, switching model with a simple name change. The platform handles unified billing, request routing and automatic fallback to alternative providers when one is unavailable, increasing service reliability.

Definition

This approach reduces the risk of lock-in to a single provider and makes it easy to compare models on quality, speed and cost. It is especially useful for prototyping applications, optimising spend by picking the best model each time and staying flexible as the model landscape evolves.

Related terms

• GPT-4 / GPT-5
• Gemini Flash
• Command R (Cohere)
• Hugging Face
• Reasoning models (o1/o3)

More in AI Models

• ChatGPT
• Gemini
• Copilot
• Mistral
• Llama
• Claude
• GPT (Generative Pre-trained Transformer)
• DeepSeek

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