Free AI & ML APIs — ranked by value

Model, vision, speech & language APIs

Scores rate free-tier value on a 1–10 scale. How scores work →

OpenAI API AI & ML API key Industry-standard API for GPT chat/reasoning models, embeddings, image generation (DALL-E/gpt-image), Whisper transcription, and TTS. Paid, usage-basedSDK
Anthropic Claude API AI & ML API key API for Claude models with long context, strong reasoning, tool use, and the Messages format used widely by AI agents. Trial creditSDK
Google Gemini API AI & ML API key Google's multimodal Gemini models for text, vision, audio, and code, with a genuinely usable free tier via Google AI Studio. 10k req/day
Hugging Face Inference API AI & ML Token Serverless inference over hundreds of thousands of open models for text, vision, audio, and embeddings across multiple providers. Free serverless
Replicate AI & ML Token Run and deploy thousands of open-source ML models (image, video, audio, LLMs) via a simple HTTP API billed by compute time. Trial creditSDK
Cohere API AI & ML API key Enterprise NLP API with Command generation models, best-in-class embeddings, and a Rerank endpoint for retrieval and RAG. 20 req/min
Mistral AI API AI & ML API key API for Mistral's open and commercial LLMs plus Codestral, embeddings, and OCR, with a free experimentation tier. Free 'Experiment' plan
ElevenLabs AI & ML API key High-fidelity text-to-speech and voice cloning API with multilingual, expressive voices and low-latency streaming. 10k cr/moSDK
AssemblyAI AI & ML API key Speech-to-text API with accurate transcription plus audio intelligence like summarization, sentiment, and speaker diarization. $50 creditSDK
Deepgram AI & ML API key Fast, low-latency speech-to-text and text-to-speech API built for real-time streaming and voice agents, with free starter credits. Free tierSDK
Stability AI AI & ML API key Generative media API for Stable Diffusion image generation, upscaling, inpainting, and other creative visual tools. 8 crSDK
Clarifai AI & ML API key Computer-vision and multimodal AI platform with prebuilt models for image/video recognition, detection, moderation, and embeddings. 1k/moSDK
DeepL API AI & ML API key High-quality neural machine translation API supporting 30+ languages, with a free tier capped at 500,000 characters per month. 500k char/moSDK
OCR.space AI & ML API key Simple optical-character-recognition API that extracts text from images and PDFs in 20+ languages with a free API key. 25k req/mo
Groq AI & ML API key Ultra-fast LPU-based inference for open LLMs (Llama, GPT-OSS, Qwen, Whisper) with an OpenAI-compatible API and free tier. 30 req/min
Together AI AI & ML API key Serverless inference and fine-tuning for 200+ open-source LLMs, image, and embedding models via an OpenAI-compatible API. Free tier
Fireworks AI AI & ML API key Fast, low-cost inference for open-source LLMs and image models with fine-tuning and an OpenAI-compatible API. $1 credit
OpenRouter AI & ML API key Single OpenAI-compatible API that routes to 300+ models across providers, including a selection of free models. 20 req/min
Perplexity Sonar API AI & ML API key LLM API with live web search built in, returning grounded answers with citations for real-time question answering. Paid, usage-basedSDK
DeepSeek API AI & ML API key Cost-efficient API for DeepSeek's strong chat and reasoning models with an OpenAI-compatible interface. Paid, usage-basedSDK
fal.ai AI & ML API key Fast generative-media inference API for image, video, and audio models like FLUX, with real-time and streaming endpoints. No published capSDK
Jina AI AI & ML API key APIs for multilingual embeddings, rerankers, and a Reader endpoint that turns any URL into clean LLM-ready text, with a free key. Free tierSDK
Voyage AI AI & ML API key State-of-the-art embedding and reranking models for retrieval and RAG, with free tokens to start. Free tierSDK
Mathpix AI & ML API key OCR API specialized in math, chemistry, tables, and scientific documents, converting images/PDFs to LaTeX and Markdown. 1k reqSDK
Roboflow AI & ML API key End-to-end computer-vision platform with a hosted inference API for object detection, segmentation, and classification models. 1k/moSDK
remove.bg AI & ML API key AI background-removal API that automatically cuts out subjects from images, with free preview credits. 50/moSDK
Twelve Labs AI & ML API key Video-understanding API for natural-language video search, classification, and summarization using multimodal embeddings. Free tierSDK
Symbl.ai AI & ML API key Conversation-intelligence API extracting topics, sentiment, action items, and summaries from voice, video, and chat in real time. Free tierSDK
Tavus AI & ML API key AI video API for generating personalized talking-head videos and real-time conversational video agents from text. Trial creditSDK
DeepAI AI & ML API key Grab-bag of simple generative and analysis endpoints for text-to-image, image editing, and content detection with an easy free key. 5/day
AI21 Labs AI & ML API key API for the Jamba family of long-context LLMs plus task-specific endpoints, with free trial credits. No published capSDK
Stableiff IBM watsonx.ai AI & ML Token IBM's enterprise foundation-model API serving Granite and curated open models for generation, embeddings, and tuning. Trial creditSDKOpenAPI
Cloudflare Workers AI AI & ML Token Edge-served inference for open LLMs, embeddings, image, and speech models via a REST API with a free daily allotment. 10k/day
Stability Imagga AI & ML API key Image-recognition API for auto-tagging, categorization, cropping, and content moderation, with a free developer tier. 1k/moSDK