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Public API Hub

Developer APIs Directory

Connect your AI models and applications to rich data. Browse free and public APIs covering finance, weather, machine learning, nutrition, geolocation, and general utilities.

Anthropic Messages API

AnthropicPay-as-you-go (per token)

API for Claude 3.5 Sonnet, Claude 3.5 Haiku, and Claude 3 Opus. Known for exceptional reasoning, large context windows (200k+ tokens), and tool/function execution.

claude reasoning agentic
Category: Text Generation

Cloudflare Workers AI

CloudflareFree tier (10k Neurons/day) / Pay-as-you-go

Serverless API to run machine learning models on Cloudflare's global GPU network. Includes Llama, Mistral, Whisper, and Stable Diffusion models.

serverless edge cloudflare
Category: Serverless Inference

Cohere Embed API

CoherePay-as-you-go / Free developer key

State-of-the-art text embedding API. Supports 100+ languages and is optimized for search, semantic retrieval, RAG, and clustering.

embeddings rag multilingual
Category: Embeddings

DeepSeek API

DeepSeekPay-as-you-go (extremely cheap)

Highly cost-effective API for DeepSeek-V3 and DeepSeek-Coder. Fully OpenAI-compatible endpoint with extremely low token pricing.

llm coding cheap
Category: Text Generation

Google Gemini Developer API

GoogleFree tier available / Pay-as-you-go

API to access Gemini 2.0 Flash, Gemini 1.5 Pro, and Imagen 3. Features standard free tiers, 2M+ token context window, audio/video native parsing, and search grounding.

gemini multimodal free-tier
Category: Text & Multimodal

Groq Cloud API

GroqPay-as-you-go (low cost)

Ultra-fast LLM inference API powered by LPU (Language Processing Unit) chipsets. Hosts Llama 3.1, Mixtral 8x7b, and Gemma 2 at extreme speeds.

speed inference llama
Category: Inference

OpenAI Chat Completions API

OpenAIPay-as-you-go (per token)

API for GPT-4o, GPT-4o-mini, and GPT-4 models. Supports text generation, multimodal inputs (images), structured JSON outputs, function calling, and streaming.

llm chat multimodal
Category: Text Generation

Replicate Model API

ReplicatePay-per-second of GPU execution

API to run thousands of open-source models with one line of code. Includes FLUX.1 image generators, SDXL, Whisper, and speech/video models.

flux stable-diffusion open-source
Category: Multimodal / Hosting

18f

18fFree APIs

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18f public-api
Category: General Utility

1forge

1forgeFree APIs

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1forge public-api
Category: General Utility

3ps

3psFree APIs

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3ps public-api
Category: General Utility

500px

500pxFree APIs

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500px public-api
Category: General Utility

abbreviation

abbreviationFree APIs

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abbreviation public-api
Category: General Utility

adresse.data.gouv.fr

adresse.data.gouv.frFree APIs

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adresse.data.gouv.fr public-api
Category: General Utility

ads-b exchange

ads-b exchangeFree APIs

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ads-b-exchange public-api
Category: General Utility

advice slip

advice slipFree APIs

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advice-slip public-api
Category: General Utility

adzuna

adzunaFree APIs

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adzuna public-api
Category: General Utility

afex

afexFree APIs

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afex public-api
Category: General Utility

ai mastering

ai masteringFree APIs

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ai-mastering public-api
Category: General Utility

airvisual

airvisualFree APIs

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airvisual public-api
Category: General Utility

ais hub

ais hubFree APIs

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ais-hub public-api
Category: General Utility

ais web

ais webFree APIs

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ais-web public-api
Category: General Utility

alienvault open threat exchange (otx)

alienvault open threat exchange (otx)Free APIs

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alienvault-open-threat-exchange-(otx) public-api
Category: General Utility

alpha vantage

alpha vantageFree APIs

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alpha-vantage public-api
Category: General Utility
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