APInex is an API platform that gives developers and autonomous agents access to multiple AI models and web services through one API key and a shared token balance. Its catalog includes models from providers such as OpenAI, Anthropic’s Claude, Google Gemini, Kimi, DeepSeek, GLM, and Grok. The platform offers OpenAI-compatible access, with pay-as-you-go pricing for paid models and daily allowances for free-category models. Users can also purchase subscriptions that raise or replace the daily usage cap for free models, while pay-as-you-go usage continues to draw from the wallet.

Beyond model access, APInex provides a Twitter/X API for applications and backends. Its HTTP endpoints support profile lookups and user search, tweet timelines and advanced search, network and list data, trends, and Spaces. Twitter/X requests use the same APInex key and balance, with charges based on returned units. The company provides pricing information, API documentation, service-status updates, FAQs, account registration, and support links to help users get started and manage their integrations.