Best free AI tools for Dev Infrastructure & AI APIs

Frontend cloud with AI SDK, v0, and serverless deployments.

Postgres backend with auth, storage, vectors, and Edge Functions.

Run open models on Cloudflare edge with generous free allowance.

Model hub, Inference API free credits, and Spaces hosting.

Ultra-fast inference API for open models like Llama and Mixtral.

Serverless Postgres with branching for dev and AI apps.

Jamstack hosting with AI-assisted deploys and serverless functions.

Deploy apps and databases with simple usage-based billing.

Google's Gemini API with a free tier for prototyping.

Unified API for hundreds of LLMs including free model variants.

Enterprise LLMs, embeddings and rerank with a free trial key.

Try and prototype with NVIDIA-hosted open models via API.

Ultra-fast LLM inference API on Cerebras hardware.

Fast inference API for open-source LLMs.

Model APIs and GPU cloud for AI developers.

Inference platform for deploying and serving AI models.

Serverless GPU cloud for running AI code.

Microsoft Azure free account with credits and always-free services.

Google Cloud free trial credit and Free Tier products including Vertex AI.

AWS Free Tier with credits for Bedrock and other services.

Oracle Cloud Always Free resources and trial credits.

API access to Qwen models with free quota.

API for GLM models with free flash-tier models.

Embedding and reranking models for retrieval.

Serverless vector database for AI applications.

Open-source vector database with a free managed cluster.

Open-source vector database with hybrid search.

Open-source search and retrieval database for AI.

Managed Milvus vector database.

Serverless Redis, vector and messaging with free tiers.

Managed Redis with vector search for AI apps.

Cloud database with vector search.

SQLite for production with edge replicas and vector search.

Distributed SQL database with vector support.

Google's app backend with Gemini AI Logic, auth and database.

Open-source backend platform for web and mobile apps.

Open-source Firebase alternative with Postgres and GraphQL.

Cloud hosting for apps, APIs and databases.

Serverless platform for apps and GPU inference.

Serverless JavaScript hosting at the edge.

Error monitoring with AI-powered debugging.

Open-source LLM observability and evals.

Open-source LLM observability and gateway.

ML experiment tracking and LLM evaluation with Weave.

AI gateway, guardrails and observability.

Evals and observability platform for AI products.

Open-source LLM tracing and evaluation.

API for Stable Diffusion image, video and audio models.

Speech-to-text, text-to-speech and voice agent APIs.

Real-time and async speech-to-text API.

Accurate speech-to-text API in 50+ languages.

Email API for developers.

Authentication and user management for apps.

Identity platform with auth for AI agents.

API platform with AI agent builder and Postbot.

Durable workflows and AI agent orchestration.

Background jobs and AI agent workflows in TypeScript.

OpenAI-compatible inference API for open frontier models.

Decentralized serverless inference for open models.

European serverless LLM inference API.

Serverless AI model APIs hosted in Europe.

Free, open-source generative AI API for text, images and audio.

Add free AI, cloud storage and auth to frontend apps without a backend.

Turn websites into LLM-ready data with crawl and scrape APIs.

Search API built for AI agents.

Web search API for AI.

Fast Google search API.

Observability platform with AI assistant.