Guide

API keys and service accounts

OpenAI · developers.openai.com

Which kind of key to use for your own testing, a deployed app or automation, and why one developer's key should not run production.

Open on developers.openai.com ↗

The question it answers

  1. How do I get an API key for OpenAI or Gemini?

Read with it

  1. Google's steps to create a key in AI Studio, what happens for new and existing Cloud users, and how to keep it safe. ai.google.dev Guide Using Gemini API keys Google
  2. The free and paid tiers by model: Gemini 3.8 Flash is free on the free tier ($0.75 / $3.75 per million tokens paid until 31... ai.google.dev Tool Gemini Developer API pricing Google
  3. OpenAI's first steps: create an API key in the dashboard, export it as an environment variable and make your first call. developers.openai.com Guide Developer quickstart OpenAI
  4. Pro plans include $100, $200 or $500 of API credits a month and Business seats $20 or $100, claimed by linking the subscription... developers.openai.com Guide API credits for ChatGPT subscribers OpenAI
  5. The same steps for Anthropic's API, if you want a Claude key as well. platform.claude.com Guide Get started with Claude Anthropic
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