Machine Learning APIs
57 free public APIs in this category
| API | Auth | HTTPS | CORS | |
|---|---|---|---|---|
| 1ClickImpact (AI Energy) Track and offset the energy and carbon footprint of your AI/LLM usage via a simple API | API Key | Yes | Unknown | ↗ |
| Advanced Multilanguage AI Translator (RapidAPI) AI-powered translator supporting multiple languages with fast, context-aware responses | API Key | Yes | Unknown | ↗ |
| AI Economics Tools Token cost, LLM energy, agent-hour and Proof-Adjusted Autonomy calculators by Michał Piszczek | No auth | Yes | Yes | ↗ |
| AI For Thai Free Various Thai AI API | API Key | Yes | Yes | ↗ |
| AI Learning Engine Create, auto-grade, and analyze learning tasks with AI-based evaluations | API Key | Yes | Unknown | ↗ |
| AI/ML Access 100+ curated AI Models over 1 API | API Key | Yes | Unknown | ↗ |
| BRAINIALL PT-BR and Spanish audio transcription with diarization and SRT/VTT | API Key | Yes | Yes | ↗ |
| Chatwith Build custom ChatGPT-style AI chatbots trained on your website and files, integrated with 5000+ apps — no coding, live in minutes. | API Key | Yes | Unknown | ↗ |
| Clarifai Computer Vision | OAuth | Yes | Unknown | ↗ |
| Cloudmersive Image captioning, face recognition, NSFW classification | API Key | Yes | Yes | ↗ |
| cogDepot Marketplace API for AI agents to post service listings, negotiate terms, and finalize deals, with an A2A Agent Card and JSON-RPC endpoint | API Key | No | Unknown | ↗ |
| Cohere Harness the power of language understanding. Join the developers and businesses who are using Cohere to generate, categorize and organize text at a scale that was previously unimaginable. | API Key | Yes | Unknown | ↗ |
| CustomGPT.ai RAG API with RESTful endpoints, comprehensive SDKs, and enterprise-grade reliability. | API Key | Yes | Unknown | ↗ |
| DeepAI Provides AI-powered APIs for text generation, image processing, and more | API Key | Yes | Yes | ↗ |
| Deepcode AI for code review | No auth | Yes | Unknown | ↗ |
| Dialogflow Natural Language Processing | API Key | Yes | Unknown | ↗ |
| DreamThreads Parse dreams into structured entities, emotions, agency, threat, and outcomes | No auth | Yes | Yes | ↗ |
| Eden Get all AI models in one place, e.g. OpenAI, Google and lots more! | API Key | Yes | Unknown | ↗ |
| EXUDE-API Used for the primary ways for filtering the stopping, stemming words from the text data | No auth | Yes | Yes | ↗ |
| Face-api.js JavaScript API for face detection, recognition, and emotion analysis using TensorFlow.js | No auth | unknown | Unknown | ↗ |
| Gandr Text to speech API for voice agents. One voice in 23 languages, every render watermarked | API Key | Yes | Unknown | ↗ |
| Gladia Artificial intelligence API's | API Key | No | Unknown | ↗ |
| GoldBean OCR, Translation, NLP & ERNIE LLM via Baidu AI (free tier available) | API Key | Yes | Unknown | ↗ |
| Google Gemini Multimodal generative AI for text, vision, and code generation | API Key | Yes | Unknown | ↗ |
| Groq Fast AI inference API with free tier, supports Llama, Mixtral, Gemma models | API Key | Yes | Yes | ↗ |
| HarnessRouter Run coding agent harnesses (Codex, Claude Code, Hermes) behind your product through one API | API Key | unknown | Unknown | ↗ |
| HOL Registry Broker Discovery API for AI agents & MCP servers (search, verify, UAID, chat) | API Key | Yes | Unknown | ↗ |
| Hugging Face AI model hub with inference API for NLP, computer vision, and audio | API Key | Yes | Yes | ↗ |
| Imagga Image Recognition Solutions like Tagging, Visual Search, NSFW moderation | API Key | Yes | Unknown | ↗ |
| Inferdo Computer Vision services like Facial detection, Image labeling, NSFW classification | API Key | Yes | Unknown | ↗ |
| IPS Online Face and License Plate Anonymization | API Key | Yes | Unknown | ↗ |
| Irisnet Realtime content moderation API that blocks or blurs unwanted images in real-time | API Key | Yes | Yes | ↗ |
| Jina AI Free AI API for embeddings, reranking, and text processing | API Key | Yes | Yes | ↗ |
| Keen IO Data Analytics | API Key | Yes | Unknown | ↗ |
| Machinetutors AI Solutions: Video/Image Classification & Tagging, NSFW, Icon/Image/Audio Search, NLP | API Key | Yes | Unknown | ↗ |
| Machinetutors AI Solutions: Video/Image Classification & Tagging, NSFW, Icon/Image/Audio Search, NLP | API Key | Yes | Yes | ↗ |
| MediaCraft AI Chinese content compliance review (17 platforms), EN↔CN translation, and SEO optimization. Pay-per-call via x402 (Solana USDC). | API Key | Yes | Yes | ↗ |
| MessengerX.io A FREE API for developers to build and monetize personalized ML based chat apps | API Key | Yes | Yes | ↗ |
| NLP Cloud NLP API using spaCy and transformers for NER, sentiments, classification, summarization, and more | API Key | Yes | Unknown | ↗ |
| Not Human Search AI tool discovery with agentic scoring for 8,600+ tools and MCP servers | No auth | Yes | Yes | ↗ |
| OpenAI Use AI models such as ChatGPT or DALL-E to experience the capabilities of AI | API Key | Yes | Unknown | ↗ |
| OpenVisionAPI Open source computer vision API based on open source models | No auth | Yes | Yes | ↗ |
| Perspective NLP API to return probability that if text is toxic, obscene, insulting or threatening | API Key | Yes | Unknown | ↗ |
| Prismix Status API Real-time uptime and incident status for 75+ AI services (OpenAI, Anthropic, Cursor, Gemini) | No auth | Yes | Unknown | ↗ |
| Roboflow Universe Pre-trained computer vision models | API Key | Yes | Yes | ↗ |
| SkyBiometry Face Detection, Face Recognition and Face Grouping | API Key | Yes | Unknown | ↗ |
| Spam Hunter Free service to classify text as spam using ML | API Key | Yes | Unknown | ↗ |
| Statlyte Live pricing, context windows and model ids for major LLM APIs | No auth | Yes | Yes | ↗ |
| Summarize Text with AI This API generates customizable summaries of text and web pages using AI | API Key | Yes | Unknown | ↗ |
| TensorFeed Real-time AI news, model pricing, service status, and agent activity feeds | No auth | Yes | Yes | ↗ |
| Time Door A time series analysis API | API Key | Yes | Yes | ↗ |
| TranscriptFetch YouTube transcript API for developers. Fetch captions from any video in production—no proxies, no IP blocks. Built for LLM, RAG, and MCP pipelines | API Key | Yes | Unknown | ↗ |
| UnoRouter OpenAI-compatible gateway routing chat/completions across 500+ models with a free tier | API Key | Yes | Unknown | ↗ |
| Unplugg Forecasting API for timeseries data | API Key | Yes | Unknown | ↗ |
| WaveSpeedAI Generate images, video and audio from 900+ open and commercial models (FLUX, Seedream, Kling, Wan) through one async REST API | API Key | Yes | Unknown | ↗ |
| WolframAlpha Provides specific answers to questions using data and algorithms | API Key | Yes | Unknown | ↗ |
| XiuRouter Route requests to leading AI models through one API with native OpenAI, Anthropic, and Gemini protocols | API Key | Yes | Unknown | ↗ |