An API (Application Programming Interface) is a set of rules and protocols that allows different software applications to communicate with each other. It defines how requests and responses should be structured so that one program can use the functionality of another, while an API key acts as a password when making requests to the application.
With either of the OpenAI’s, Anthropic’s or Google’s API keys you can use BUILD Lab’s tokens and utilize the available models (coupled with their documentation) for your project purposes. For instance simple querying, comparing model output, or even building an application of your own that would use the model functionality.
General – GPT-5.4 / GPT-5.4 mini / GPT-5.4 nano
Specialized – GPT Image 1.5 / gpt-realtime-1.5 / GPT-4o mini TTS / GPT-4o Transcribe
General – Claude Opus 4.6 / Claude Sonnet 4.6 / Claude Haiku 4.5
General – Gemini 3.1 Pro / Gemini 3 Flash / Gemini 3 Flash-Lite
Specialized – Nano Banana 2 / Nano Banana Pro / Gemini 3.1 Flash Live / Gemini 3.1 Flash TTS
Financial Modeling Prep (FMP) provides financial data and its API can be utilized to query both live and historic data on stocks, ETFs, indexes, forex, and cryptocurrencies.
