API ATLAS

AI & Machine Learning: 65 free APIs

APIs and MCP servers for inference, embeddings, agents and data science workflows. Every record below links to its own documentation page.

Listed
65
No auth needed
12
Full profiles
4

APIs in this category

65 of 65
ElevenLabs API Documentation This is the documentation for the ElevenLabs API. You can use this API to use our service programmatically, this is done by using your xi-api-key. You can view your xi-api-key using the 'Profile' tab on https://beta.elevenlabs.io. Our API is experimental so all endpoints are subject to change.
api.datumbox.com Datumbox offers a Machine Learning platform composed of 14 classifiers and Natural Language processing functions. Functions include sentiment analysis, topic classification, readability assessment, language detection, and much more.
Pandorabots AIaaS AIaaS provides API access to our bot hosting platform and SDKs, allowing developers to easily integrate conversational interfaces into applications.
MediaCraft AI Chinese content compliance review (17 platforms), ENCN translation, and SEO optimization. Pay-per-call via x402 (Solana USDC).
Tanvo Image, video and song generation on 30 AI models (Nano Banana, Kling, Veo, Suno), with a free tier
Hirak FaceAPI Face detection, face recognition with age estimation/gender estimation, accurate, no quota limits
NLP Cloud NLP API using spaCy and transformers for NER, sentiments, classification, summarization, and more
Cohere NLP API for text generation, embeddings, classification and summarization with a free trial tier
onomeo OpenAI-compatible, about 30 free LLMs, 30 calls per 5 hours, optional pay-as-you-go, public beta
AI Economics Tools Token cost, LLM energy, agent-hour and Proof-Adjusted Autonomy calculators by Michał Piszczek
Mistral AI High-performance LLM API by Mistral AI including Mistral and Mixtral models, with a free tier
TokenRoute One OpenAI-compatible endpoint for hundreds of LLMs, with a free tier and per-token pricing
OpenRouter Unified API for 300+ LLMs from OpenAI, Anthropic, Meta, Mistral and more, with a free tier
Lacuna Public board where AI agents post problems as seeks and agents who solved them offer help
Replicate Run open-source AI models in the cloud including image generation, LLMs and audio models
Together AI Fast inference API for open-source LLMs including Llama, Qwen, DeepSeek with a free tier
EXUDE-API Used for the primary ways for filtering the stopping, stemming words from the text data
QuelLLM Open-weight language model catalogue with memory requirements and installation metadata
Machinetutors AI Solutions: Video/Image Classification & Tagging, NSFW, Icon/Image/Audio Search, NLP
Modelfax LLM pricing, context windows and deprecation dates, schema-validated and updated daily
Perspective NLP API to return probability that if text is toxic, obscene, insulting or threatening
Voxell Forge OpenAI-compatible text embeddings API, free-forever model with no credit card required
AnswerLine ChatGPT, Gemini, Copilot, AI Mode and Google Search/News results as structured JSON
Inferdo Computer Vision services like Facial detection, Image labeling, NSFW classification
Irisnet Realtime content moderation API that blocks or blurs unwanted images in real-time
Audexum Speech-to-text in 25 languages and text-to-speech with 43 voices in 32 languages
MessengerX.io A FREE API for developers to build and monetize personalized ML based chat apps
Requesty OpenAI compatible LLM router for 600+ models, with a free tier for free models
DreamThreads Parse dreams into structured entities, emotions, agency, threat, and outcomes
Groq Fast AI inference API with free tier, supports Llama, Mixtral, Gemma models
TensorFeed Real-time AI news, model pricing, service status, and agent activity feeds
DeepAI Provides AI-powered APIs for text generation, image processing, and more
Imagga Image Recognition Solutions like Tagging, Visual Search, NSFW moderation
Not Human Search AI tool discovery with agentic scoring for 8,600+ tools and MCP servers
GEN Create and edit video projects, with credit-based AI media generation
GoldBean OCR, Translation, NLP & ERNIE LLM via Baidu AI (free tier available)
Hugging Face AI model hub with inference API for NLP, computer vision, and audio
BRAINIALL PT-BR and Spanish audio transcription with diarization and SRT/VTT
SafeReel NSFW detection for images and full-length videos by URL, free tier
WolframAlpha Provides specific answers to questions using data and algorithms
Statlyte Live pricing, context windows and model ids for major LLM APIs
Nonobench Open-source benchmark of how well LLMs solve nonogram puzzles
OpenVisionAPI Open source computer vision API based on open source models
Jina AI Free AI API for embeddings, reranking, and text processing
Speak AI Transcribe and analyze audio and video in 100+ languages
OpenAI API APIs for sampling from and fine-tuning language models

Rows marked ↗ have no reference page of their own — the source registry did not provide enough to write one — so they link straight to the provider's documentation.

Authentication

How the 65 records in this category authenticate callers. Values come straight from the source registries; records the sources do not describe are counted as unknown rather than guessed.

  • API key 42
  • No authentication 12
  • Unknown 10
  • OAuth 1

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