HH Tech API Gateway provides a unified way to access AI models from Anthropic, OpenAI, DeepSeek, and Alibaba through a single API key and shared credit wallet. Its catalog includes Claude, GPT, DeepSeek, and Qwen models, as well as GPT Image 2 for image generation. The service uses transparent, usage-based pricing, with credit charges based on tokens or requests and a stated conversion of 1,000 Vietnamese dong to 1,000 credits.

Developers can connect the gateway to compatible tools such as Claude Desktop, Claude Code, Codex, Cline, and other OpenAI- or Anthropic-compatible apps. Standard Anthropic Messages and OpenAI-compatible endpoints are provided, so users can integrate with existing workflows using one base URL and key. For browser-based use, the platform also offers Chat AI with model selection, web search, and research features, alongside support for writing and video content tasks. HH Tech presents its service as an alternative to purchasing access from each provider separately, with a live model catalog and usage tracking intended to make costs easier to monitor.