OnAPI vs Cursor AI

OnAPI is a unified API gateway that lets developers call GPT, Claude, Gemini, Sora, Veo, and Google's Nano Banana image model through a single key. Swap your SDK base URL to OnAPI's endpoint, plug in an OnAPI key, and keep the rest of your integration unchanged.

The gateway speaks OpenAI-compatible and Anthropic-compatible protocols, so chat completions, Anthropic messages, streaming, function calling, and long-context requests work without a rewrite. OnAPI says new upstream models typically appear within 24 hours of release.

Two routing channels share the same account. The economy channel bills at a 1:1 rate multiplier for everyday volume. The official channel routes through paid keys tied directly to provider accounts at a 1:7.5 multiplier when you need a straighter path to upstream APIs.

OnAPI is aimed at builders shipping AI products, especially where direct provider billing is inconvenient. Top-ups run through Alipay, WeChat, USDT, and USDC. Account balance does not expire, and the site states there is no minimum spend.

The service runs on the open-source New API project (based on One API), which handles model aggregation and cross-format conversion between provider APIs.

Cursor.sh is an AI-first code editor designed to boost developer productivity by combining human creativity with AI precision. It acts as a human-AI programmer, transforming ideas into code with a custom autocomplete model that predicts your next actions quickly and accurately. Cursor understands your entire codebase, regardless of size or complexity, enabling it to provide targeted edits, multi-line suggestions, and smart rewrites that help you write code faster and with fewer errors.

The editor supports a range of top AI models from providers like OpenAI, Anthropic, Gemini, and xAI, giving users flexibility to choose the best fit for their projects. Cursor integrates deeply into your workflow, allowing you to start coding tasks from platforms like Slack or your issue tracker and finish them in the IDE. It also features an autonomy slider, letting you control how much independence the AI has—from simple autocomplete to fully agentic coding.

Cursor's agent tools can run in any terminal or script, and its Bugbot feature reviews your pull requests to identify issues and fix them with one click. The editor is highly customizable, supporting one-click import of VS Code extensions, themes, and keybindings, as well as connecting external tools and data sources through MCP servers. Teams can manage reusable prompts and scoped instructions to tailor AI behavior to their needs.

Trusted by millions of developers and over half of the Fortune 500, Cursor is built for secure, scalable software development. Its recent improvements include a new Tab model that reduces unnecessary suggestions while increasing acceptance rates, faster training with custom kernels, and enhanced agent terminal tools. Cursor continues to evolve with a focus on making programming more enjoyable and efficient, moving away from traditional trial-and-error coding to a more interactive, idea-driven process.

Whether you're an individual developer or part of a large team, Cursor offers a flexible, powerful environment that adapts to your workflow and coding style. Its privacy options ensure your code stays secure, and its integration capabilities mean it fits naturally into your existing toolset. Cursor is not just a code editor; it's a partner that helps you build better software faster.