LLMFly AI

What is LLMFly AI

LLMFly AI provides a single OpenAI-compatible API that allows you to call multiple leading large language models, including GPT, Claude, Gemini, and Grok. It simplifies integration by letting you use the OpenAI SDK without rebuilding your integration for each provider.

How to use LLMFly AI

1. Create a key – Use a different key for each app and environment.
2. Update the base URL – Point your server-side OpenAI client to the LLMFly AI endpoint.
3. Paste in a model ID – Copy it from the catalog and start with a short, non-streaming request.

Features of LLMFly AI

• One API for multiple models – Access GPT, Claude, Gemini, and Grok through a single OpenAI-compatible API.
• Separate development from production – Give each app and environment its own key; revoke one without affecting others.
• Keep your existing client – Change the base URL and choose a catalog model ID; test provider-specific features only where needed.
• Transparent pricing – Compare input, output, and cache pricing in the catalog, and confirm each charge in usage history.
• Integration skill – Copy the integration guide into Claude Code, Codex, or Cursor.
• Compatible workflows – Use the same API endpoint from Claude Code, Codex, Cursor, OpenAI SDK, Anthropic SDK, backend APIs, automation scripts, or your own server application.

Use Cases of LLMFly AI

• Model selection – Compare capabilities, context limits, and reference pricing across GPT, Claude, Gemini, and Grok.
• Real workloads – Find candidate models and evaluation methods for coding, chatbots, agents, and reasoning.
• Developer setup – Follow authentication, model ID, SDK, error-handling, and copy-ready request guides.
• Editors and agents – Connect editors, agents, scripts, and backend services using the same API endpoint.

Pricing

LLMFly AI offers discounted rates compared to official reference prices:

• OpenAI GPT – 70% OFF
• Gemini – 60% OFF
• Claude Code – 50% OFF
• Grok – 60% OFF

Each model has its own input, output, and—when available—cache rates. Your usage history shows what each request consumed.

FAQ

What does LLMFly AI do?
It lets your server call the models in the LLMFly AI catalog through one OpenAI-compatible API.

Can I keep using the OpenAI SDK?
Yes. For compatible routes, change the base URL, API key, and model ID. Test tools, streaming, and structured output if your app uses them.

Which models can I call?
The catalog shows what is available now and which model ID to send. Availability can change.

How am I charged?
Each model has its own input, output, and—when available—cache rates. Your usage history shows what each request consumed.

Does LLMFly AI store prompts or responses?
Prompts and responses are processed to provide the requested API service. Retention varies by data type and is limited to what is reasonably needed for service delivery, security, disputes, and legal obligations; see the Privacy Policy for details.