Best LLM Routers for Gemini

OpenRouter is a unified AI inference platform that lets developers connect to a large catalog of models without integrating separately with every model provider. Through one API, users can access models from major AI companies including OpenAI, Google, Anthropic, Meta, Mistral, DeepSeek, Qwen, xAI, and numerous independent providers. The service supports multimodal workloads involving text, images, video, and audio. Developers can use a single account, credit balance, and API key across supported models instead of maintaining separate billing relationships and credentials. OpenRouter's routing infrastructure can prioritize providers based on factors such as price, latency, and reliability. Requests can also be redirected to alternate providers when a preferred endpoint becomes unavailable, helping applications maintain higher uptime. Organizations can configure data policies that restrict prompts to approved models and infrastructure providers. The platform provides benchmarks, model rankings, usage information, documentation, and developer tools for evaluating and deploying different models. OpenRouter is OpenAI API compatible, making it easier for teams to add broad model access to existing AI applications with limited integration changes.

PromptUnit serves as an AI inference intermediary that automatically minimizes AI expenses by acting as a bridge between an application and its AI service providers, requiring no modifications to existing code. Teams simply replace the base URL while maintaining the same SDK, endpoints, response parsing, and error management, allowing PromptUnit to take care of routing, failover, cost monitoring, and quality assessment. It meticulously logs every API interaction, detailing aspects such as model, feature, user segment, token count, latency, and cost, thereby providing immediate insights into AI expenditures before any routing adjustments are implemented. In its observation mode, PromptUnit meticulously monitors traffic, shadow-classifies incoming requests, predicts potential savings, and clarifies routing choices, enabling teams to visualize exact savings prior to activating live routing. After activation, Smart Routing intelligently classifies tasks to direct each request to the most cost-effective model that meets the established quality standards. Additionally, PromptUnit incorporates features like prompt compression, token inflation protection, efficiency scoring for prompts, semantic request caching, and multi-model consensus for enhanced performance. Its comprehensive approach ensures that organizations can optimize their AI usage and manage budgets effectively.

LiteLLM serves as a comprehensive platform that simplifies engagement with more than 100 Large Language Models (LLMs) via a single, cohesive interface. It includes both a Proxy Server (LLM Gateway) and a Python SDK, which allow developers to effectively incorporate a variety of LLMs into their applications without hassle. The Proxy Server provides a centralized approach to management, enabling load balancing, monitoring costs across different projects, and ensuring that input/output formats align with OpenAI standards. Supporting a wide range of providers, this system enhances operational oversight by creating distinct call IDs for each request, which is essential for accurate tracking and logging within various systems. Additionally, developers can utilize pre-configured callbacks to log information with different tools, further enhancing functionality. For enterprise clients, LiteLLM presents a suite of sophisticated features, including Single Sign-On (SSO), comprehensive user management, and dedicated support channels such as Discord and Slack, ensuring that businesses have the resources they need to thrive. This holistic approach not only improves efficiency but also fosters a collaborative environment where innovation can flourish.

OrcaRouter serves as a routing system for AI models that are compatible with OpenAI, efficiently directing prompts to the appropriate models from a wide array, including OpenAI, Anthropic, Gemini, DeepSeek, Qwen, Kimi, and over 200 other leading and open-source models. Its design aims to maintain the high quality of responses while minimizing costs associated with AI inference by evaluating each prompt and directing complex reasoning tasks to premium models while assigning simpler tasks to more economical open-source options. The routing process is meticulously quality-graded, avoiding arbitrary swaps for cheaper models, and every request clearly indicates the difficulty rating, chosen model, provider, and associated costs, ensuring that routes remain transparent, accountable, and reproducible. Developers can easily switch models by updating the API base URL, while previously established SDKs, model names, and streaming functionalities remain operational. Additionally, OrcaRouter features seamless automatic failover capabilities, allowing for traffic rerouting without interruption should a provider experience downtime, thus preventing disruptions for users. It also offers comprehensive API key management that incorporates spending limits, model allowlists, rate restrictions, and budget compliance, among other functionalities, ensuring robust control over resource usage. This combination of features makes OrcaRouter an indispensable tool for optimizing AI model utilization in various applications.

Openlayer is the enterprise AI governance platform for discovering, testing, monitoring, securing, and governing AI systems from development through production. Openlayer brings AI evaluation, observability, guardrails, compliance, gateway enforcement, and cost controls into one platform.

Created by LM-SYS, RouteLLM is a publicly available toolkit that enables users to direct tasks among various large language models to enhance resource management and efficiency. It features strategy-driven routing, which assists developers in optimizing speed, precision, and expenses by dynamically choosing the most suitable model for each specific input. This innovative approach not only streamlines workflows but also enhances the overall performance of language model applications.

Boldrouter serves as a hosted AI gateway tailored for developers and teams engaged in creating applications utilizing large language models. It offers an OpenAI-compatible API along with a consolidated endpoint that efficiently routes requests among various model providers, intelligently selecting and switching based on criteria such as cost, response time, or provider reliability. Teams have the flexibility to utilize prepaid credits or link their own provider keys, while also having the capability to oversee API keys, set spending limits, and analyze token, model, and latency metrics through an intuitive dashboard. This platform additionally features capabilities like streaming, tool invocation, multimodal requests, embeddings, document text extraction, model consensus and evaluation, and an optional prompt anonymization function that ensures personal data is removed before requests are sent. Supporting a wide range of workflows, the Swiss-hosted service is ideal for applications, SaaS solutions, agents, and developer tools requiring access to diverse AI models. Furthermore, its robust infrastructure promotes seamless integration with existing systems, making it a versatile choice for modern application development.

ModelLane serves as an intelligent inference gateway and routing control plane designed for developers and organizations that utilize various language model providers. It features an API compatible with OpenAI, enabling users to send requests to models that are either hosted, private, or self-hosted. Teams have the flexibility to create routing policies, referred to as “Lanes,” based on factors like cost, latency, availability, data retention, and geographical region, while also incorporating failover mechanisms, retry options, credential isolation, and detailed visibility into usage and expenses at the route level. The platform supports a variety of documented connectors, including those for OpenAI, Anthropic, Google, Mistral, Groq, and DeepSeek, along with local serving tools such as Ollama and vLLM. Furthermore, it provides an MCP interface that facilitates operations at the model layer. This system has multiple use cases, such as streamlining provider APIs, selecting optimal routes for diverse workloads, ensuring service continuity if a provider becomes unavailable, and overseeing inference activities effectively. Deployment choices are versatile, including options for hosted services, dedicated deployments, or integration within a customer’s VPC, allowing for tailored solutions to fit organizational needs. Ultimately, ModelLane enhances the efficiency and effectiveness of using multiple AI language models across various applications.

UnoRouter serves as a versatile gateway for accessing various OpenAI-compatible language models. With a single API key, users can unleash over 200 models from multiple providers including OpenAI, Anthropic, Google, and others, seamlessly integrating coding agents like Claude Code, Cline, Codex, and Kilo Code. By simply directing any OpenAI SDK to the designated base URL, users can effortlessly switch between models without needing to modify their existing code. Additionally, UnoRouter features an integrated chat and character client, which supports personas, lorebooks, and the import of SillyTavern cards, all accessible with the same API key. The platform operates on a usage-based pricing model that includes a free tier, ensuring users have access to live updates on model availability and pricing. This innovative approach simplifies the process of utilizing multiple AI models for various applications.

NanoGPT is a subscription-based AI solution designed to cater to a variety of workflows, offering users comprehensive access to chat, image, video, audio, speech, and embedding models all from a single platform. Its design aims to simplify the user experience for those seeking robust AI models without the hassle of managing multiple subscriptions or accounts, while ensuring that conversation histories remain private by default and providing secure options for handling sensitive information. By integrating models from leading providers such as ChatGPT, Claude, Gemini, DeepSeek, Llama, DALL-E, Stable Diffusion, Flux, Recraft, and others, NanoGPT allows users the flexibility to choose the most suitable tool for their specific tasks. The platform facilitates a wide range of functionalities, including conversations, coding, creative writing, image and video generation, audio production, text-to-speech, web searching, file uploads, and model comparisons, all within a unified interface. Additionally, its model pages offer users the ability to explore and discover various AI language models tailored for conversations, programming, and creative projects, as well as access to image models for artistic endeavors. This versatility makes NanoGPT an invaluable resource for users looking to enhance their creative and professional projects with advanced AI capabilities.

nexos.ai, a powerful model-gateway, delivers AI solutions that are game-changing. Using intelligent decision-making and advanced automation, nexos.ai simplifies operations, boosts productivity, and accelerates business growth.

Bifrost serves as a powerful AI gateway that consolidates access to over 20 providers, including OpenAI, Anthropic, AWS, Bedrock, Google Vertex, Azure, and others, all via a single API. It allows for rapid deployment in mere seconds without the need for any configuration, ensuring features such as automatic failover, load balancing, semantic caching, and robust enterprise governance. In rigorous tests handling 5,000 requests per second, Bifrost introduces a minimal overhead of just 11 microseconds for each request, showcasing its efficiency and reliability for high-demand applications. This makes it an ideal choice for organizations looking to streamline their AI integrations while maintaining performance.