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README.md
Free AI APIs
A collective list of free AI APIs for developers.
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Contents
- LLM / Text Generation
- Image Generation
- Speech-to-Text
- Text-to-Speech
- Embeddings
- Image Recognition / Vision
- Video Generation
- Music / Audio Generation
- Translation
- Summarization / Extraction
- Code Generation
- Search / RAG
- Moderation / Safety
- Model Hosting / Inference
- Multi-Modal Aggregators
Legend
| Column | Description |
|---|---|
| API | Name and link to the API |
| Description | What it does |
| Free Tier | What you get for free |
| Auth | Authentication method: apiKey, OAuth, None |
| Docs | Link to API documentation |
LLM / Text Generation
| API | Description | Free Tier | Auth | Docs |
|---|---|---|---|---|
| Google AI Studio | Gemini 2.5 Pro/Flash | 1,500 req/day, 2M context | apiKey | Docs |
| Groq | Ultra-fast inference (Llama, Mixtral) | 1,000 req/day, 6K tokens/min | apiKey | Docs |
| Cerebras | Fastest inference available | Free tier included | apiKey | Docs |
| OpenRouter | 100+ models, some free | Several models at $0 | apiKey | Docs |
| Hugging Face | 500K+ open-source models | Free Inference API | apiKey | Docs |
| Mistral AI | Mistral/Mixtral models | Daily free token quota | apiKey | Docs |
| Cohere | Command R models | Trial API keys, rate limited | apiKey | Docs |
| Together AI | 100+ open-source models | $5 free credits | apiKey | Docs |
| Fireworks AI | Fast open-source inference | $1 free credits | apiKey | Docs |
| DeepInfra | Serverless model inference | Free credits on signup | apiKey | Docs |
| Ollama | Run LLMs locally | Unlimited (local) | None | Docs |
| LM Studio | Local model server | Unlimited (local) | None | Docs |
| Puter | Free LLM API in browser | Free, no signup | None | Docs |
| AIML API | 200+ models unified API | Free tier included | apiKey | Docs |
| SambaNova | Fast inference platform | Free tier available | apiKey | Docs |
| Novita AI | LLM and image APIs | $0.50 free credits | apiKey | Docs |
| Hyperbolic | Open-source model hosting | Free tier available | apiKey | Docs |
Image Generation
| API | Description | Free Tier | Auth | Docs |
|---|---|---|---|---|
| Stability AI | Stable Diffusion models | 25 free credits/month | apiKey | Docs |
| Replicate | Run any ML model | $5 free credits (no CC) | apiKey | Docs |
| Leonardo AI | Image generation + editing | 150 tokens/day | apiKey | Docs |
| Hugging Face | Stable Diffusion via API | Free Inference API | apiKey | Docs |
| Pollinations | Free image generation | Unlimited, no auth | None | Docs |
| Craiyon | Free AI image generation | Free with watermark | None | Docs |
| Clipdrop | Image editing APIs | 100 calls/day | apiKey | Docs |
| Flux (via Replicate) | High-quality image gen | Included in Replicate free tier | apiKey | Docs |
| Together AI | FLUX, SD models | Included in free credits | apiKey | Docs |
Speech-to-Text
| API | Description | Free Tier | Auth | Docs |
|---|---|---|---|---|
| Deepgram | Fast, accurate transcription | $200 free credits | apiKey | Docs |
| AssemblyAI | Transcription + analysis | ~330 hours free | apiKey | Docs |
| Google Cloud Speech | Google's speech recognition | 60 min/month free | apiKey | Docs |
| Whisper (OpenAI) | Multilingual recognition | Via Hugging Face (free) | apiKey | Docs |
| Whisper (Local) | Self-hosted Whisper | Unlimited (local) | None | Docs |
| Vosk | Offline speech recognition | Unlimited (local) | None | Docs |
| SpeechBrain | Open-source speech toolkit | Unlimited (local) | None | Docs |
Text-to-Speech
| API | Description | Free Tier | Auth | Docs |
|---|---|---|---|---|
| ElevenLabs | Ultra-realistic voice synthesis | 10K chars/month | apiKey | Docs |
| Google Cloud TTS | Google's text-to-speech | 4M chars/month free | apiKey | Docs |
| Amazon Polly | AWS text-to-speech | 5M chars/month (12 months) | apiKey | Docs |
| Coqui TTS (Local) | Open-source TTS | Unlimited (local) | None | Docs |
| Piper (Local) | Fast local TTS | Unlimited (local) | None | Docs |
| Bark (Local) | Multilingual TTS | Unlimited (local) | None | Docs |
Embeddings
| API | Description | Free Tier | Auth | Docs |
|---|---|---|---|---|
| Google AI Studio | Gemini embeddings | Included in free tier | apiKey | Docs |
| Voyage AI | High-quality embeddings | 50M tokens free | apiKey | Docs |
| Cohere | Embed v4 (multilingual) | Rate-limited free tier | apiKey | Docs |
| Hugging Face | 1000s of embedding models | Free Inference API | apiKey | Docs |
| Jina AI | Embeddings API | 1M tokens free | apiKey | Docs |
| Nomic | Open-source embeddings | Free API tier | apiKey | Docs |
| Ollama | Local embedding models | Unlimited (local) | None | Docs |
Image Recognition / Vision
| API | Description | Free Tier | Auth | Docs |
|---|---|---|---|---|
| Google Cloud Vision | Object detection, OCR | 1,000 units/month | apiKey | Docs |
| Google AI Studio | Gemini vision (multimodal) | Included in free tier | apiKey | Docs |
| Clarifai | Image/video recognition | 1,000 ops/month | apiKey | Docs |
| Roboflow | Custom vision models | 1,000 inferences/month | apiKey | Docs |
| Hugging Face | Vision transformers | Free Inference API | apiKey | Docs |
| Surya (Local) | OCR + layout detection | Unlimited (local) | None | Docs |
Video Generation
| API | Description | Free Tier | Auth | Docs |
|---|---|---|---|---|
| Kling AI | High-quality video gen | Free daily credits | apiKey | Docs |
| Replicate | Video models (Wan, CogVideo) | $5 free credits | apiKey | Docs |
| Hugging Face | Open-source video models | Free Inference API | apiKey | Docs |
Music / Audio Generation
| API | Description | Free Tier | Auth | Docs |
|---|---|---|---|---|
| Suno | Full song generation | 5 songs/day | OAuth | Docs |
| Udio | AI music generation | Limited free credits | OAuth | Docs |
| Replicate | MusicGen, AudioGen | $5 free credits | apiKey | Docs |
| AudioCraft (Local) | Meta's audio generation | Unlimited (local) | None | Docs |
Translation
| API | Description | Free Tier | Auth | Docs |
|---|---|---|---|---|
| DeepL | High-quality translation | 500K chars/month | apiKey | Docs |
| Google Translate | Google's translation | 500K chars/month | apiKey | Docs |
| LibreTranslate | Open-source translation | Free API (rate limited) | None | Docs |
| MyMemory | Translation memory API | 5,000 words/day | None | Docs |
| Lingva | Google Translate alternative | Unlimited (no tracking) | None | Docs |
Summarization / Extraction
| API | Description | Free Tier | Auth | Docs |
|---|---|---|---|---|
| Google AI Studio | Summarize with Gemini | Included in free tier | apiKey | Docs |
| Hugging Face | Summarization models | Free Inference API | apiKey | Docs |
| Firecrawl | Web scraping for LLMs | 500 credits free | apiKey | Docs |
| Diffbot | Structured data extraction | 10K pages free trial | apiKey | Docs |
| Unstructured | Document parsing | Free API tier | apiKey | Docs |
Code Generation
| API | Description | Free Tier | Auth | Docs |
|---|---|---|---|---|
| Google AI Studio | Code with Gemini | Included in free tier | apiKey | Docs |
| Groq | Fast code generation | 1,000 req/day | apiKey | Docs |
| DeepSeek | DeepSeek Coder models | Low-cost (~free level) | apiKey | Docs |
| Codeium | AI code completion | Free for individuals | apiKey | Docs |
| Hugging Face | StarCoder, CodeLlama | Free Inference API | apiKey | Docs |
| Tabby (Local) | Self-hosted code assist | Unlimited (local) | None | Docs |
Search / RAG
| API | Description | Free Tier | Auth | Docs |
|---|---|---|---|---|
| Tavily | Search API for AI agents | 1,000 searches/month | apiKey | Docs |
| Exa | AI-native search API | 1,000 searches/month | apiKey | Docs |
| Brave Search API | Privacy-focused search | 2,000 queries/month | apiKey | Docs |
| SerpApi | Search engine results | 100 searches/month | apiKey | Docs |
| SearXNG (Local) | Self-hosted metasearch | Unlimited (local) | None | Docs |
Moderation / Safety
| API | Description | Free Tier | Auth | Docs |
|---|---|---|---|---|
| OpenAI Moderation | Content moderation | Free (unlimited) | apiKey | Docs |
| Perspective API | Toxicity detection (Google) | Free (rate limited) | apiKey | Docs |
| Hugging Face | Toxicity/sentiment models | Free Inference API | apiKey | Docs |
| LLM Guard (Local) | LLM input/output security | Unlimited (local) | None | Docs |
Model Hosting / Inference
| API | Description | Free Tier | Auth | Docs |
|---|---|---|---|---|
| Hugging Face Spaces | Host ML apps (Gradio/Streamlit) | Free CPU instances | None | Docs |
| Replicate | Run any model via API | $5 free credits | apiKey | Docs |
| Google Colab | Free GPU notebooks | Free T4 GPU | OAuth | Docs |
| Kaggle Notebooks | Free GPU notebooks | 30h GPU/week | OAuth | Docs |
| Lightning AI | GPU-powered dev studios | 22 free GPU hours | OAuth | Docs |
Multi-Modal Aggregators
| API | Description | Free Tier | Auth | Docs |
|---|---|---|---|---|
| OpenRouter | Unified API for 100+ models | Free models available | apiKey | Docs |
| AIML API | 200+ models, one API | Free tier included | apiKey | Docs |
| LiteLLM | Unified proxy for all providers | Unlimited (self-hosted) | None | Docs |
| Puter | Free AI in browser | Free, no signup | None | Docs |
Contributing
Found a free API we missed? See CONTRIBUTING.md for how to add it.
License
CC0 1.0 Universal - Public Domain.
If this saves you money, give it a star.
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