Free LLM API Guides & Tutorials
Practical articles for developers — how to use free AI API keys, compare models, build LangChain apps, set up Open WebUI, and more.
Ollama vs Cloud LLM API: When to Run AI Models Locally (2025 Guide)
Should you run LLMs locally with Ollama or use a cloud API? A practical comparison of speed, cost, privacy, and model quality — with setup guides for both.
Best LLM for Coding in 2025: 7 Models Tested on Real-World Tasks
We tested GPT-4o, Claude Opus 4, DeepSeek V3, Gemini 2.5 Flash, o3, Llama 4, and Mistral on real coding tasks. Here are the honest results.
OpenAI API vs Google Gemini API: Which Should You Build On? (2025)
A developer-focused comparison of the OpenAI API and Google Gemini API — pricing, features, SDKs, rate limits, and which is better for different project types.
DeepSeek V3 vs GPT-4o API: Which Is Better for Your Project?
A detailed comparison of DeepSeek V3 and GPT-4o across speed, cost, coding, reasoning, and context — with code examples for both models.
GPT-4o vs Claude Opus 4: Which Is Better for Developers? (2025)
An honest, task-based comparison of GPT-4o and Claude Opus 4 — coding, writing, reasoning, tool use, context length, and pricing. Real results, no hype.
LLM Context Window Comparison 2025: Which Model Handles the Most Tokens?
A practical comparison of context windows across GPT-4o, Claude, Gemini, and DeepSeek — what the numbers mean, and which model actually uses long context well.
The 10 Best Free LLM APIs in 2025 (With Rate Limits & Model Quality Compared)
A ranked comparison of every major free LLM API option in 2025 — including rate limits, model quality, credit card requirements, and OpenAI compatibility.
Free Gemini API Key: Google AI Studio vs Community Keys — What's the Difference?
Compare Google AI Studio's free Gemini API with community keys — data privacy, rate limits, compatibility, and which to use when.