Guides
Practical, opinionated walkthroughs for working with LLM API keys: how to get them, how to secure them, and how to compare them.
How to get an OpenAI API key
Step-by-step walkthrough to create, scope, and verify an OpenAI API key — including project keys and service accounts.
How to get an Anthropic API key
Create a Claude API key from the Anthropic console, set workspace limits, and verify it in seconds.
How to get a Google Gemini API key
Generate a Gemini API key from Google AI Studio, switch to a billed project, and avoid the free-tier surprises.
API key security best practices for LLMs
How to store, scope, rotate, and revoke LLM API keys without leaking them through git, logs, or shared environments.
OpenAI vs Anthropic pricing in 2026
A side-by-side breakdown of OpenAI and Anthropic per-token pricing, batch discounts, and prompt-caching savings.
Free LLM API keys for testing in 2026
Which providers offer free credits, how long they last, and how to stretch them for prototyping without a credit card.
LLM rate limits explained
How RPM, TPM, and tier-based limits actually work across OpenAI, Anthropic, Groq, and others — and how to read the headers.
Rotating API keys safely
A practical rotation playbook: dual-write, blue-green keys, secret managers, and how to verify the rotation worked.