Overview and recommendations of various AI LLM API platforms, updated 2026.6.9

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Recommendations and Introductions for AI LLM API Aggregation/Relay Platforms: Domestic and International LLM API Platforms

Introduction

Stepping into 2026, the AI LLM market remains in a state of fierce competition. From international models like GPT-5 and Claude 4.5 to the domestically shining DeepSeek R1/V3 and the Qwen3 series, facing such a complex model ecosystem, developers and enterprises face a massive pain point: If you connect with, top up, and maintain API Keys for each provider individually, not only are development costs high, but financial reimbursements are also extremely cumbersome.

Therefore, “API aggregation/relay platforms” (Model Routers) have become the most mainstream solution today. Developers only need to connect to a single standard OpenAI-format interface to instantly call hundreds of mainstream LLMs worldwide. This guide will organize the latest and most reliable domestic and international LLM API aggregation platforms of 2026, helping you save time, worry less, and spend less.

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Domestic Platform Recommendations

1. SiliconFlow

SiliconFlow is a leading domestic generative AI computing infrastructure provider, focusing on high-performance inference optimization for open-source LLMs. With extreme speed, ultra-low costs, and a rich model ecosystem, the platform has become the top choice for domestic developers using open-source models.

  • Core advantages: Permanent free and unlimited use for open-source models under 9B, first to launch the latest open-source models, compatible with OpenAI API format, supports hundreds of mainstream open-source and closed-source models
  • New user perk: Register via the exclusive link to get a 16 RMB voucher

Official website: https://url.vpszj.cn/siliconflow

2. AstraFlow

AstraFlow is an enterprise-level exclusive AI development platform under UCloud, focusing on providing enterprises with a secure and compliant model marketplace and isolated development environments. With a dual-node layout in China and overseas, along with a comprehensive permission management system, the platform has become the top choice for enterprise-level AI application implementation.

  • Core advantages: Supports mainstream models like DeepSeek, Qwen, Kimi, GLM, and Doubao; dual-node intelligent scheduling between China and Los Angeles; enterprise-level isolated development environments; supports corporate billing
  • New user perk: Register via the exclusive link to get 500,000 free Tokens

Official website: https://url.vpszj.cn/uc_astraflow

3. Alibaba Cloud Bailian

Alibaba Cloud Bailian is an enterprise-level LLM service platform under Alibaba Cloud, focusing on providing developers and enterprises with one-stop model invocation and application building capabilities. With coverage of over a hundred models and deep integration with the Alibaba Cloud ecosystem, it has become the preferred platform for Alibaba Cloud users to access LLMs.

  • Core advantages: 100+ model coverage (centered on the Qwen series), seamless integration with Alibaba Cloud products, comprehensive enterprise-level SLA guarantees, supports model fine-tuning and application building
  • Token Plan subscription, billed monthly, more cost-effective
  • New user perk: New users who register via the link below will receive 70+ million free Tokens (valid for 90 days)

Official website: https://url.vpszj.cn/bailian

4. Qiniu Cloud

Qiniu Cloud AI is a leading domestic enterprise-level multi-model aggregation inference platform. Built on the infrastructure of a cloud service provider with 15 years of history, it is the commercial platform with the most complete support for the Claude series of models in China. With native dual-protocol compatibility, mature MCP services, and enterprise-level stability, the platform has become the top choice for heavy Claude users and AI Agent developers.

  • Core advantages: The only domestic platform simultaneously compatible with both native OpenAI and Anthropic protocols; fully supports Claude’s exclusive Thinking/Vision features; built-in cloud MCP service requiring no self-deployment; provides enterprise-level SLA guarantees; supports 70+ mainstream domestic and international LLMs
  • New user perk: New users who register via the link below will receive 3 million free Tokens

Qiniu Cloud official website: https://url.vpszj.cn/qiniu

Qiniu Cloud AI invitation link: https://url.vpszj.cn/qiniuai

5. AI Ping

AI Ping is a one-stop AI evaluation and API service intelligent routing platform under Qingcheng Jizhi (a Tsinghua University affiliate). Backed by over a decade of computing system optimization technology from the Department of Computer Science at Tsinghua University, it is jointly supported by the China Software Testing Center. With authoritative performance monitoring, network-wide intelligent routing, and transparent cost control, the platform has become the top choice for developers seeking “faster, more stable, and more cost-effective” LLM calls.

  • Core advantages: Backed by Tsinghua technology, daily updates of network-wide model and provider throughput/latency performance data; intelligent routing for automatic model selection, seamless failover to ensure high availability; unified OpenAI-compatible interface for one-click access to 600+ mainstream domestic and international LLMs; granular full-link cost analysis to achieve the optimal balance between performance and cost; simultaneous launch of the latest models like DeepSeek-V4-Pro, supports cutting-edge OpenClaw technology integration
  • New user perk: New users who register via the link below will receive 10 RMB in platform computing credits

Official website: https://url.vpszj.cn/aiping

6. Zhipu AI

Zhipu AI is a top-tier domestic artificial general intelligence company, independently developing the flagship GLM series of LLMs, and focusing on building full-scenario trustworthy intelligent infrastructure. With leading model performance, a complete development toolchain, and mature enterprise-level services, the platform has become a core partner for AI implementation across various industries.

  • Core advantages: GLM-5.1 overall performance benchmarks Claude Opus 4.6, with significantly improved long-cycle task capabilities; GLM-5V-Turbo natively integrates vision and language, possessing professional visual programming capabilities; provides one-stop development capabilities for agents, web search, MCP, knowledge bases, and model fine-tuning; launched the GLM Coding Plan, a high-frequency coding exclusive subscription package; endorsed by hundreds of leading enterprise clients like Feishu, Xpeng, and SAIC
  • New user perk: New users who register via the link below will receive 20 million Tokens for the GLM-4.5-Air model

Official website: https://url.vpszj.cn/zhipuai

7. FreeModel

FreeModel is a zero-barrier cutting-edge AI API service platform for global developers, promoting the concept of “cutting-edge AI free for everyone”, and focusing on providing high-performance flagship LLM inference services. With no credit card binding requirements, extremely high free quotas, and fully compatible interfaces, the platform has become the top choice for individual developers to quickly build AI applications.

  • Core advantages: Register and use without binding a credit card, no hidden fees or trial limits; provides FRE-5.4 (GPT-5.4), FRE-5.5 (GPT-5.5) latest flagship LLMs; 100% compatible with OpenAI API and Anthropic formats, directly replacing original OpenAI SDK, Anthropic SDK, and tools; adapts to all mainstream development frameworks, existing projects can seamlessly migrate
  • Free quota: 10.00 RMB/5 hours, 66.67 RMB/7 days
  • New user perk: New users who register via the link below will receive a $10 credit

Official website: https://url.vpszj.cn/freemodel

Warm reminder: This is a lesser-known small platform; large top-ups are not recommended.

8. Tencent Cloud

Tencent Cloud TokenHub is a one-stop LLM service platform launched by Tencent Cloud, dedicated to providing enterprises and developers with a unified LLM API entry point, integrating self-developed Hunyuan and third-party mainstream LLM resources. With comprehensive multimodal capabilities, a well-developed enterprise ecosystem, and highly cost-effective subscription plans, the platform is an optimal choice for AI coding and content creation scenarios.

  • Core advantages: Covers Tencent’s self-developed Hunyuan HY2.0 series and mainstream third-party models like DeepSeek-V3.2, Kimi-K2.5, and GLM-5, supporting text, image, video, and 3D full-modality generation; launched an exclusive Coding Plan, compatible with mainstream AI programming and office tools like OpenClaw and Cursor, with subscription prices 50%-80% lower than pay-as-you-go; built-in intelligent creation Agents for video effects and live-action dramas (coming soon), supporting “describe-to-generate” and precise local modifications; can link with Tencent Cloud infrastructure such as training, agents, and knowledge engines to form a complete business implementation closed loop; provides enterprise-level usage statistics, API Key management, and model monitoring capabilities
  • New user perk: New users who register via the link below can claim 1 million free Tokens, valid for up to 90 days, to experience all mainstream model services on the platform

Official website: https://url.vpszj.cn/tencent_tokenhub

International Platform Recommendations

1. OpenRouter

OpenRouter is the world’s largest AI model aggregation and routing platform, focusing on providing developers with the ability to call any model through a unified interface. With 300+ model coverage and intelligent provider routing, the platform has become the top choice for developers worldwide to explore and use multiple models.

  • Core advantages: 300+ models / 60+ providers unified interface, OpenAI SDK compatible (just change base_url), automatic Failover failover, real-time Provider price comparison to choose the best, 27 permanently free models
  • New user perk: Some open-source models are permanently free to use with rate limits

Official website: https://url.vpszj.cn/openrouter

Recommended Reading

English Version of the Article: https://blog.zeruns.top/archives/94.html