You do not need a budget to ship AI. You need the right free tier. This is the working developer's shortlist of AI APIs you can call today for $0 — with real free-tier limits, the model you actually get, and the exact use case each one wins.
The OpenAI API is still the fastest path from idea to shipped AI feature. This guide takes you from your first key to production-grade usage of GPT-5.5, the Responses API, image generation and transcription — with copy-paste code that works today.
Picking the wrong LLM API costs you twice — once in quality and once in your bill. This is the current head-to-head of the leading text generation APIs: who wins on reasoning, who wins on price, and exactly which one to pick for your use case.
The right speech-to-text API can transcribe an hour of audio for pennies with near-human accuracy — the wrong one quietly burns your budget on errors. Here is the current comparison of the top STT APIs by accuracy, latency and price, so you pick once and pick right.
You can generate a publishable image for less than a cent — if you pick the right model. This guide shows you how to generate, edit and upscale images via API with Stable Diffusion, FLUX, gpt-image and Imagen, plus the exact per-image cost of each.
Google ships an AI API for almost everything — which is exactly why developers get lost in it. This guide maps the entire portfolio in plain terms: which API to use for each job, how they fit together, and what each one costs, so you stop searching and start shipping.
A chatbot that frustrates users is worse than no chatbot. This guide shows you how to build one that actually helps — the right APIs and frameworks for 2026, when to use an LLM versus a flow builder, and how to ship something production-ready instead of a demo.
Adding visual intelligence to your app used to mean months of ML work. Now it is one API call. This guide compares the leading image recognition APIs — plus when a multimodal LLM is the smarter choice — so you ship visual features in days, not quarters.
Your users are drowning in text and short on time. A summarization API turns a 50-page report into a three-sentence decision in seconds. This guide shows you how to build reliable summarization at scale — the right APIs, the patterns that avoid hallucination, and copy-paste code.
Choosing the wrong AI API costs you a rewrite, a blown budget, and lost months. This is the seven-point framework experienced teams use to choose once and choose right — covering capability, quality, true cost, latency, reliability, scale, and compliance.
Most AI projects die in the gap between "call an LLM" and "ship a reliable feature." SharpAPI closes that gap. It gives you dozens of production-ready AI workflows — resume parsing, product descriptions, sentiment, SEO tags and more — behind one clean REST API, so you add real AI features in an afternoon instead of building (and babysitting) prompts yourself.
In 2026, "add AI" increasingly means "build an agent" — a model that uses tools, reads your data, and gets work done. The unlock is the Model Context Protocol (MCP), the standard that lets any model talk to any tool. This guide shows you the agent APIs and the MCP plumbing you need to ship one.
AI video crossed the quality line in 2026 — and it is now an API call, billed by the second. Whether you need cinematic b-roll, talking-avatar explainers, or product clips at scale, this guide shows you the top video generation APIs, what each is best at, and the real per-second cost.
An LLM that does not know your data is a liability. Retrieval-augmented generation (RAG) fixes that — grounding answers in your own content so they are accurate and citable. This guide shows you the embedding models, vector databases and patterns to build RAG that actually works in production.