Best Developer APIs in 2026

A router for LLMs and other AI models.

A curated marketplace for AI prompts, each human-reviewed and live-tested before it goes on sale. Skip prompt trial-and-error: buy working prompts for Midjourney, ChatGPT, Claude, and 26+ more models. Free options, paid from $2.99, plus subscriptions.

Key Graded Prompts features:

Human prompt review Verified example outputs Free Prompts Guest checkout

Visit website freemium $2.99 ($2.99–$9.99 range, subscription plans available)

API marketplace for finding and connecting to the world's top APIs.

Key RapidAPI features:

Wide Variety of APIs Unified Billing Ease of Integration Testing Environment

The Collaboration Platform for API Development.

Key Postman features:

User-Friendly Interface Collaboration Comprehensive Testing Tools Extensive API Documentation

Open Source

Fast and reliable screenshot API built to handle millions of screenshots a month.

Key ScreenshotOne features:

Remove ads, trackers, and cookie banners Scrolling and animated screenshots

freemium $17.0 / Monthly (2000)

Generate beautiful website screenshots using our fast website screenshot API.

Key ScreenshotAPI.net features:

Ease of Use Customization Options Integration Capabilities Automated Screenshots

freemium $5.0 / Monthly (1,000 screenshots per month.)

Screenshot full page websites in retina resolution with Urlbox.io screenshot as a service API. Urlbox is the best provider of automated website screenshots offering many unique options and features.

Key Urlbox features:

High-Quality Screenshots Responsive Design Testing Customizable Options API Integration

paid Free Trial $29.0 / Monthly (5,000 requests)

Apify is a web scraping and automation platform that can turn any website into an API.

Key Apify features:

Ease of Use Scalability Integration and API Support Customizability

Brings voice and messaging to your web and mobile applications.

Key Twilio features:

Scalability Ease of Integration Global Reach Feature-Rich Platform

Open Source

Simple, powerful APIs for everyday dev tasks.

Key Abstract APIs features:

Ease of Use Variety of APIs Scalability Free Tier

Open Source

GPT-3 access without the wait.

Key OpenAI features:

Advanced AI Research User-Friendly Tools Broad Application Scope Commitment to Safety

Open Source

Connect the apps you use everyday to automate your work and be more productive. 1000+ apps and easy integrations - get started in minutes.

Key Zapier features:

Ease of Use Wide Range of Integrations Custom Automation Scalability

Run open-source machine learning models with a cloud API.

Key Replicate.com features:

Wide Model Selection User-Friendly Interface Real-time Deployment

Regrouping the best AI APIs for 10mn integration in your code.

Key Eden AI features:

Multi-Provider Integration Ease of Use Cost Efficiency Scalability

Open Source