Claude Developer Platform
Anthropic
API and console for building with Anthropic's Claude models, including managed agents.
Best for: Reliable assistants and agentsVisit Claude Developer Platform (opens in new tab)
AI tools directory
11 AI APIs and developer platforms
Checked on 6 October 2026 · 7 free or freemium · 4 paid
Short answer
What are ai apis and developer platforms?
AI developer platforms give programmatic access to language models through APIs, so you can build chat assistants, content tools or search features into your own website or app.
Compare at a glance
| Tool | Maker | Pricing | Best for |
|---|---|---|---|
| Claude Developer Platform | Anthropic | Paid | Reliable assistants and agents |
| Cohere | Cohere | Freemium | Site search and RAG |
| Google Gemini API & AI Studio | Freemium | Free prototyping with Gemini | |
| GroqCloud | Groq | Freemium | Fast open-model inference |
| Hugging Face | Hugging Face | Freemium | Open-source models |
| Mistral AI Studio | Mistral AI | Freemium | European-hosted model access |
| OpenAI API | OpenAI | Paid | Adding GPT to apps |
| OpenRouter | OpenRouter | Freemium | Comparing many models |
| Perplexity API | Perplexity AI | Paid | Search-grounded answers |
| Together AI | Together AI | Paid | Hosting open models |
| You.com APIs | You.com | Freemium | Grounding agents in web data |
All 11 tools in detail
Paid
Cohere
Cohere
Enterprise models for generation, embeddings and reranking, ideal for search and retrieval features.
Best for: Site search and RAGVisit Cohere (opens in new tab)
Google Gemini API & AI Studio
Prototype in AI Studio and integrate Gemini models into products through the Gemini API.
Best for: Free prototyping with GeminiVisit Google Gemini API & AI Studio (opens in new tab)
GroqCloud
Groq
Very low-latency inference API serving popular open models on Groq's custom chips.
Best for: Fast open-model inferenceVisit GroqCloud (opens in new tab)
Hugging Face
Hugging Face
Hub for open models, datasets and demo apps, with hosted inference options.
Best for: Open-source modelsVisit Hugging Face (opens in new tab)
Mistral AI Studio
Mistral AI
Mistral's developer platform (formerly La Plateforme) for its models, agents and deployment.
Best for: European-hosted model accessVisit Mistral AI Studio (opens in new tab)
OpenAI API
OpenAI
Pay-as-you-go API for OpenAI's GPT models, image generation, speech and agent tools.
Best for: Adding GPT to appsVisit OpenAI API (opens in new tab)
OpenRouter
OpenRouter
Single OpenAI-compatible API routing requests to hundreds of models from many providers.
Best for: Comparing many modelsVisit OpenRouter (opens in new tab)
Perplexity API
Perplexity AI
Web-grounded Agent API (successor to Sonar) and Search API for building cited answer features.
Best for: Search-grounded answersVisit Perplexity API (opens in new tab)
Together AI
Together AI
Cloud platform for serverless inference, fine-tuning and GPU clusters on open models.
Best for: Hosting open modelsVisit Together AI (opens in new tab)
You.com APIs
You.com
Web search, contents and research APIs that feed real-time results to AI agents.
Best for: Grounding agents in web dataVisit You.com APIs (opens in new tab)