Best API AI tools

Tune AI was a comprehensive AI platform offering a suite of tools, including Tune Chat for building custom chatbots and Tune Studio for developing and fine-tuning AI models. The platform has ceased operations as of February 28, 2025.

Speechllect is an advanced AI-powered speech-to-text (STT) and text-to-speech (TTS) platform. It utilizes a unique "Sense Theory" to not only transcribe and synthesize speech but also to understand and generate emotional tone and intonation. This makes it ideal for creating human-like voice interactions for businesses, developers, and content creators.

TextSynth offers developers powerful, cost-effective access to a suite of AI models, including large language models (LLMs), text-to-image, text-to-speech, and speech-to-text, through a flexible REST API and an interactive playground. It features models like Llama, Mistral, Stable Diffusion, and Whisper, optimized for speed and affordability.

Kie AI provides affordable, stable, and high-performance AI APIs for seamless integration. Its flagship offering, the FLUX.1 Kontext API, enables advanced AI-powered image editing through natural language prompts. It's designed for developers, marketers, and designers to streamline creative workflows, offering both speed-optimized (Pro) and precision-focused (Max) versions for various professional needs.

SpamCheck.ai is an AI-powered API designed for developers to detect and prevent spam in various forms of user-generated content. It specializes in analyzing free-form JSON data, going beyond traditional email filters. By combining modern AI with proven heuristics, it provides comprehensive protection against spam, profanity, and malicious content, helping to maintain the integrity of online platforms.

TailorTalk is an AI agent that automates B2C sales, support, and complex workflows on WhatsApp, Instagram, and more. Designed for SMBs, it handles bookings, payments, and lead follow-ups 24/7, integrating seamlessly with your existing systems via API. No coding required.

MapleCMS is a powerful, developer-first headless CMS supercharged with AI. It enables users to effortlessly create, manage, and integrate content anywhere using a fast GraphQL API and a global CDN. With an integrated AI assistant, it offers a zero learning curve experience for developers, content creators, and marketers, streamlining workflows from schema generation to content creation and code implementation.

An affordable, developer-focused transcription API powered by OpenAI's Whisper v3. It offers high-accuracy speech-to-text, speaker diarization, translation, and support for over 100 languages. Its OpenAI-compatible structure allows for seamless integration and scaling for millions of users.

ChatterQuant is an AI-powered platform for financial professionals, tracking social media discussions about stocks and crypto. It provides actionable insights through advanced dashboards and APIs, helping users generate alpha, manage risk, and streamline due diligence by analyzing sentiment, bot activity, and market trends in real-time.

Exalate is an AI-powered integration platform for real-time, two-way data synchronization between different work management systems like Jira, ServiceNow, Zendesk, and Azure DevOps. It offers unparalleled flexibility and control through a powerful scripting engine, allowing for the creation of simple to highly complex integration workflows. With its AI Assist feature, even intricate sync rules can be set up using natural language prompts, making deep integration accessible to all.

ApyHub is a comprehensive developer platform offering over 150 production-ready APIs. It's designed to accelerate application development by providing a vast catalog of utility and AI-powered APIs for tasks like data extraction, file manipulation, marketing automation, and e-commerce. It enables developers, no-coders, and teams to innovate faster by integrating trusted, pre-built functionalities, reducing boilerplate code and infrastructure management.

Skwiz is an AI-powered Intelligent Document Processing (IDP) platform that uses generative AI to instantly extract data from any document. Define your data needs in simple language, upload documents, and automate data entry for invoices, receipts, ID cards, and more, saving significant time and eliminating complex setups.

Hume AI is a research lab and technology company that provides empathic AI tools. It features the world's most realistic voice AI, including an advanced Text-to-Speech (TTS) engine, a Speech-to-Speech (EVI) model, and an Expression Measurement API. These tools allow developers and creators to build emotionally intelligent applications, generate expressive voices with nuanced control, and analyze human emotion from text, audio, and video.

ModernMT is an enterprise-grade, adaptive AI translation platform that learns from human corrections in real-time. It provides context-aware, document-level translations in 200 languages, offering superior quality and efficiency for businesses, LSPs, and professional translators through its powerful API and CAT tool integrations.

TheB.AI is an all-in-one AI platform providing unified access to a diverse range of advanced language and image generation models. It offers a user-friendly web app and a powerful API for seamless integration, featuring real-time search, long-term memory, and team collaboration tools.

Import.io is an enterprise-grade web data extraction platform that provides high-quality, structured data from any website. It offers both a fully managed service and a self-service solution to power e-commerce market intelligence, brand monitoring, and data-driven business decisions, overcoming complex anti-scraping technologies.

Handwriting OCR is an AI-powered platform that instantly converts handwritten and printed documents into editable digital text with incredible accuracy. It supports over 300 languages, various file formats (PDF, JPG, PNG), and exports to Word, Excel, and plain text. Designed for businesses, researchers, and individuals, it prioritizes security with bank-grade encryption and a strict no-data-training policy.

Skrape is an LLM-powered web scraping API designed to transform any website into clean, structured, and LLM-ready data. It simplifies data extraction by converting web pages into structured JSON or clean markdown, making it ideal for AI training, RAG systems, and data analysis. With features like dynamic content handling and smart crawling, Skrape provides a reliable solution for developers and businesses to automate their data collection pipelines.

aikit is a comprehensive AI development toolkit and no-code platform designed for developers and businesses. It provides a suite of powerful APIs and a visual workflow builder to easily integrate artificial intelligence into applications, automate processes, and create custom AI solutions without extensive coding knowledge. Accelerate your AI development from idea to deployment with aikit.

Hypi is a low-code platform designed to accelerate application development. It provides a serverless backend, instant GraphQL APIs, and real-time data synchronization, enabling developers and businesses to build and scale applications faster and more efficiently without managing infrastructure.

WaveSpeedAI is a high-performance, unified API platform designed to accelerate AI image, video, and audio generation. It provides developers and creators with a single point of access to a vast library of state-of-the-art models from providers like Google, ByteDance, and Kuaishou, enabling faster building, creation, and scaling of multimodal AI applications.

GPTOCR is an AI-powered data extraction tool that transforms documents, such as PDFs, into structured JSON files. It automates manual data entry, reduces human error, and streamlines workflows, enabling teams to focus on higher-value tasks by providing accurate, ready-to-use data.

Clearbit is a B2B marketing intelligence platform, now part of HubSpot as Breeze Intelligence. It enriches customer records with comprehensive data, identifies anonymous web traffic, and scores leads in real-time. By leveraging public data, proprietary sources, and LLMs, it helps sales and marketing teams to target, engage, and convert their ideal customers more effectively.

randomseed offers a powerful and cost-effective Stable Diffusion API for developers and a user-friendly web playground for creators. It supports custom models from CivitAI and Hugging Face, LoRA training and usage, and guarantees high-speed, reliable image generation. This platform is ideal for integrating AI art into applications or creating unique visuals with maximum flexibility and control, saving up to 90% on GPU costs.