Best AI API Tools & Software in 2026 (Free & Paid)

AI APIs provide programmable interfaces that allow developers to integrate machine learning capabilities such as natural language processing, computer vision, and speech recognition into their applications. They enable rapid development of AI-powered features, streamline workflows, and are used by software engineers, data scientists, and product teams to build intelligent applications without building models from scratch.

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55
StepFun

StepFun

Step AI delivers high-performance, agent-ready large models with native multimodal understanding and open customization to scale real-world AI applications.

CN
71.74%
572.2K
5.0
AI AgentsAI API
0
APIMart

APIMart

APIMart delivers affordable, unified access to 500+ AI models—including Sora 2, GPT Image 2, and Claude—via one OpenAI-compatible API with up to 70% cost savings.

CN
47.81%
265.3K
5.0
AI API
0
Kong Konnect

Kong Konnect

Kong AI Gateway is the unified platform for securely managing, governing, and monetizing AI agents and LLM traffic alongside traditional APIs.

US
24.76%
316.5K
5.0
AI AgentsAI API
0
Cloudflare

Cloudflare

Cloudflare is a unified global cloud platform that connects, protects, and accelerates websites, apps, AI agents, and networks—making digital experiences faster, safer, and simpler to manage.

US
20.52%
57.7M
5.0
AI AgentsAI API
0
AgentMail

AgentMail

AgentMail gives AI agents real, programmable email inboxes to send, receive, and manage messages—enabling truly autonomous, email-capable AI workflows.

US
34.61%
210.0K
5.0
AI AgentsAI API
0
Mux

Mux

Mux is a robust video API that simplifies the process of adding high-quality, cost-effective video to websites, platforms, and AI workflows.

US
18.89%
639.4K
5.0
AI APIAI Subtitle Generator
0
元渊智能

元渊智能

YuanYuan Intelligence connects you to 200+ AI models with a single, cost-effective, and highly available API, perfect for enhancing your applications with advanced AI capabilities.

3.0
AI API
0
EvoLink.AI

EvoLink.AI

EvoLink provides a unified API to access 40+ top AI models for chat, video, image, and music, saving up to 70% on AI costs with 99.9% uptime and seamless integration.

CN
13.46%
295.8K
5.0
AI APIAI Developer Tools
0
Devnagri

Devnagri

Devnagri, India's #1 AI-powered translation engine, helps businesses localize content 5x faster and more accurately, enhancing engagement and trust across multiple Indian languages.

IN
76.46%
137.8K
5.0
AI APIAI Translators
0
Thesys

Thesys

Thesys C1 is a powerful API that transforms AI model outputs into live, interactive user interfaces. It helps developers build dynamic AI frontends faster and with less code, supporting any LLM and customizable UI components.

US
12.90%
120.5K
5.0
AI APIAI Developer Tools
0
SiliconFlow

SiliconFlow

SiliconFlow is the fastest, simplest way to deploy and run AI models. Whether you need LLMs, image/video AI, or fine-tuning, it’s all here—no fuss, just results.

CN
17.56%
662.9K
5.0
AI APIAI Developer Tools
0
ComfyOnline

ComfyOnline

ComfyOnline simplifies AI workflow execution and API deployment, offering a serverless, cost-effective solution for developers and creators.

US
11.12%
49.7K
4.0
AI APIAI Workflow
0
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