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Beginner guide

Get a Gemini API Key and Set the GEMINI_API_KEY Environment

Create an API key in Google AI Studio, add it as the GEMINI_API_KEY environment variable, and authentication is ready.

5 min readOpen guide
Build with AI

Create an App with Lovable and Bolt: Steps and Plan Comparison

Use Lovable for web-focused services and Figma design integration; use Bolt for full-stack server environments and rapid prototyping.

5 min readOpen guide
Developer tools & APIs

OpenAI API Pricing: Calculate Cost and Check Usage Limits

OpenAI API cost is price per million tokens times usage, billed apart from ChatGPT: current prices, usage tiers, and where to set a budget.

6 min readOpen guide
Developer tools & APIs

Gemini API Usage: Check Limits and Prevent 429 Errors

Gemini API limits are per project in RPM, TPM and RPD. Check live values in Google AI Studio and use backoff, spend caps or a paid tier to stop 429 errors.

7 min readOpen guide
Comparison

Cursor Subscription vs Your Own API Key: Who Bills What

Your own API key in Cursor is billed by the provider and covers chat models only; on Teams a $0.25 per million token Cursor rate still applies.

6 min readOpen guide
Comparison

OpenAI, Claude and Gemini API Prices and Korean Token Costs

Compare OpenAI, Claude and Gemini API prices per million tokens, plus our own count of 74 articles: Korean used 1.35 to 1.45 times the tokens of English.

7 min readOpen guide
Calculator

Calculate Gemini API Costs After Free-Tier Limits

The free tier of the Gemini API does not charge fees but returns a 429 RESOURCE_EXHAUSTED error when limits are exceeded.

8 min readOpen guide
Comparison

Cursor vs Windsurf vs Cline: Monthly API Costs

Cursor Pro and Windsurf (now Devin) Pro cost $20 a month and ClinePass $9.99. Split subscription fees from model usage to compare real monthly cost.

5 min readOpen guide
Developer tools & APIs

OpenAI API key safety: environment checks and rotation

Check environment configuration without printing secrets, verify Git exclusions, and distinguish project budget alerts from application-enforced limits.

6 min readOpen guide
Beginner guide

Configure API Keys in VS Code

VS Code lets you store API keys in OS environment variables or a project .env file without committing them to the repository.

5 min readOpen guide