Sintra AI
Home
Live Feed
Automation Hub
Prompt Library256
AI News554
Weekly Digest
Topic Hubs
AI History
AI Labs
Research
Learning Paths
Guides
Resources
Concepts
Videos
AI Tools74
Models
Claude
Google AI
Cost Calc
Skip to content
Sintra AIResources
Back to Sintra
AI Ecosystem

Resources & links.

The full AI developer ecosystem in one place — APIs, frameworks, agents, vector stores, MCP servers, eval tools, communities, and research.

52 resources curated·10 categories·11 videos
⚡ APIs & Model Access
9

Anthropic API

Access Claude models via API

Direct access to Claude Haiku 4.5, Sonnet 4.6, and Opus 4.7 with prompt caching and batch processing

⚡ APIs & Model AccessClaudeAnthropic

OpenAI Platform

GPT-5.5, GPT-5.5 Pro, and embeddings

Access GPT-5.5 Instant, GPT-5.5 Pro, DALL-E 3, Whisper, and text-embedding-3 models

⚡ APIs & Model AccessGPTOpenAI

Google AI Studio

Free

Gemini 3.5 Flash and 3.1 Pro — generous free tier

Free tier includes Gemini 3.5 Flash (launched I/O 2026); paid tier unlocks Gemini 3.1 Pro with 2M token context

⚡ APIs & Model AccessGeminiGoogle

Groq

Free

Ultra-fast LLM inference

LPU-based hardware delivers industry-leading inference speeds on open models

⚡ APIs & Model AccessGroqinference

OpenRouter

Unified API for 200+ models

Single OpenAI-compatible endpoint for Claude, GPT, Gemini, Llama, and more

⚡ APIs & Model AccessunifiedAPI

Qwen API (DashScope)

Alibaba's Qwen 3.7 Max, Qwen 3 32B, and open models via API

Access Qwen 3.7 Max ($2.50/M input) and open Qwen 3 models — also available via OpenRouter at qwen/qwen3.7-max

⚡ APIs & Model AccessQwenAlibaba

Together AI

Open-source model inference and fine-tuning

Run and fine-tune Llama, Mistral, and other open models with a simple API

⚡ APIs & Model Accessopen-sourcefine-tuning

Replicate

Run open-source models in the cloud

One-line API for thousands of community models including Stable Diffusion and Flux

⚡ APIs & Model Accessopen-sourceimages

Hugging Face Inference

Free

Hosted inference for HF models

Free serverless inference on 100,000+ models from the HF Hub

⚡ APIs & Model AccessHuggingFaceopen-source
🧱 Developer Frameworks
7

LangChain

Free

Python/JS framework for LLM apps

Composable chains, retrieval, agents, and integrations for every major LLM

🧱 Developer FrameworksPythonJavaScript

LlamaIndex

Free

Data framework for LLM applications

Best-in-class RAG pipelines with support for 100+ data source connectors

🧱 Developer FrameworksRAGPython

Vercel AI SDK

Free

TypeScript toolkit for AI-powered UIs

Unified API with streaming, tool calling, and structured outputs for all major providers

🧱 Developer FrameworksTypeScriptReact

Anthropic SDK

Free

Official Python and TypeScript SDKs

First-party SDK with full type safety, streaming, tool use, and prompt caching support

🧱 Developer FrameworksPythonTypeScript

Pydantic AI

Free

Agent framework from the Pydantic team

Type-safe agent framework with dependency injection and model-agnostic design

🧱 Developer FrameworksPythonagents

Instructor

Free

Structured outputs from LLMs via Pydantic

Forces LLM responses into validated Pydantic models with automatic retry on failure

🧱 Developer FrameworksPythonstructured

LeRobot

Free

Open-source robot learning library by Hugging Face

End-to-end robot learning: data collection, training, and deployment for SO-ARM100, OpenArm, and LeRobot Humanoid platforms (Apache 2.0)

🧱 Developer Frameworksroboticsimitation learning
🤖 Agents & Orchestration
5

CrewAI

Free

Multi-agent role-based framework

Assign roles to agents and let them collaborate on complex tasks autonomously

🤖 Agents & Orchestrationmulti-agentPython

LangGraph

Free

Stateful multi-actor workflows

Build cyclic, stateful agent workflows as graphs with fine-grained control

🤖 Agents & Orchestrationgraphstateful

AutoGen

Free

Multi-agent conversation framework by Microsoft

Customizable conversational agents that work together to solve tasks

🤖 Agents & OrchestrationMicrosoftmulti-agent

Composio

Free

100+ managed tools for AI agents

Pre-built integrations with GitHub, Slack, Gmail, Jira, and 100+ apps for agents

🤖 Agents & Orchestrationtoolsintegrations

smolagents

Free

Minimal agent library by HuggingFace

Minimal ~1,000 line codebase for code-first agents that write and execute Python

🤖 Agents & OrchestrationHuggingFacelightweight
🗄️ Infrastructure
6

Ollama

Free

Run LLMs locally on your machine

One command to run Llama, Mistral, Gemma, and 100+ models locally with GPU support

🗄️ Infrastructurelocalopen-source

vLLM

Free

High-throughput LLM serving engine

PagedAttention memory management for up to 24× throughput improvement over HuggingFace

🗄️ InfrastructureservingPython

Pinecone

Free

Managed vector database

Serverless vector DB with built-in hybrid search (dense + sparse) for RAG applications

🗄️ Infrastructurevector DBRAG

Qdrant

Free

Open-source vector similarity engine

High-performance Rust-based vector database with filtering and payload support

🗄️ Infrastructurevector DBopen-source

Weaviate

Free

AI-native vector database

Built-in vectorization modules for text, images, and multimodal data

🗄️ Infrastructurevector DBopen-source

ChromaDB

Free

Open-source embedding database

Simplest vector DB to get started with — runs locally in pure Python, no setup needed

🗄️ Infrastructurevector DBopen-source
🔌 MCP & Integrations
5

Power BI MCP Server

Free

AI directly reads your semantic model and writes DAX measures

Connects Claude or Copilot to your .pbix file — AI reads tables/relationships and writes DAX directly. Privacy note: table names, column names, and query results flow to the LLM; use Enterprise plans or local models for sensitive data.

🔌 MCP & IntegrationsPower BIDAX

Model Context Protocol

Free

Open standard for AI-to-tool connections

Open protocol by Anthropic enabling AI models to access local and remote data sources

🔌 MCP & IntegrationsMCPstandard

MCP Servers Registry

Free

Community-built MCP server collection

Official collection of reference MCP servers for GitHub, Slack, Postgres, filesystem, and more

🔌 MCP & IntegrationsMCPopen-source

Zapier AI

No-code automation with AI actions

Connect Claude and other AI models to 6,000+ apps with no-code automation triggers

🔌 MCP & Integrationsno-codeautomation

Make

Free

Visual automation platform with AI modules

Drag-and-drop workflow builder with native Claude and OpenAI modules

🔌 MCP & Integrationsno-codeautomation
📊 Evals & Benchmarks
5

LM Arena

Free

Crowdsourced model ranking via blind comparisons

Elo-based leaderboard from millions of human preference votes across all major models

📊 Evals & Benchmarksbenchmarkscommunity

Promptfoo

Free

Open-source LLM testing and red-teaming

YAML-based test suites for evaluating prompt quality, safety, and regression testing

📊 Evals & Benchmarkstestingopen-source

OpenAI Evals

Free

Framework for evaluating LLM outputs

Systematic framework for measuring model performance with hundreds of pre-built evals

📊 Evals & BenchmarksOpenAIopen-source

Helicone

Free

LLM observability and monitoring

One-line integration to log requests, track costs, and monitor latency across LLM providers

📊 Evals & Benchmarksobservabilitycost

1B.AI

Free

Telemetry audit: see exactly what your AI tool sends to the LLM

Traces MCP tool calls in real time — shows which table names, column names, and query results leave your machine when using Power BI MCP, Cursor, or other AI dev tools

📊 Evals & Benchmarksprivacytelemetry
🌐 Communities
4

Hugging Face

Free

The GitHub of machine learning

Host, discover, and share ML models, datasets, and demos with 1M+ model repos

🌐 Communitiescommunitymodels

r/MachineLearning

Free

Reddit's ML research community

Active discussion of papers, industry news, and research with 3M+ members

🌐 Communitiescommunityresearch

AI on Twitter/X

Free

Real-time AI discourse

Researchers, founders, and engineers sharing papers, demos, and takes as they happen

🌐 Communitiescommunitynews

AI Alignment Forum

Free

Technical AI safety research and discussion

Focused forum for long-form AI safety research posts from leading researchers

🌐 Communitiessafetyalignment
📖 Research & Papers
6

arXiv AI

Free

AI and ML preprint server

The primary venue for AI research papers before peer review — hundreds published daily

📖 Research & Paperspapersresearch

Papers With Code

Free

ML papers linked to their code

Every ML paper linked to its implementation, with live benchmark leaderboards

📖 Research & Paperspaperscode

The Gradient

Free

Long-form ML research writing

In-depth articles by researchers explaining complex ML concepts and recent advances

📖 Research & Papersblogresearch

Anthropic Research

Free

Anthropic's published AI safety research

Constitutional AI, interpretability, model cards, and frontier safety research from Anthropic

📖 Research & PapersAnthropicsafety

Software Engineering at Google

Free

Google's engineering culture, processes, and technical decisions — free O'Reilly book

The 'Flamingo Book' — covers testing at scale, code review, version control, and team culture; essential context for the AI-era second-order effects Bender describes at Google I/O 2026

📖 Research & Papersengineering cultureprocess

DORA State of DevOps

Free

Annual research on software delivery performance and AI adoption impact

Original source of the 'AI as amplifier' finding — DORA data shows AI lifts elite performers most; teams with weak practices see minimal gains or regression

📖 Research & PapersDevOpsbenchmarks
▶️ Video Tutorials
5

Intro to Large Language Models — Karpathy

Free

60-min visual intro to LLMs, training, RLHF, and emergent capabilities

Best single video for engineers entering AI — no maths required, covers tokenization → fine-tuning → alignment in one session

▶️ Video TutorialsLLMfundamentals

Neural Networks — 3Blue1Brown

Free

Stunning animated series from neurons to backpropagation to transformers

The definitive visual explanation — watch the 4-part series in order for the clearest mental model of how LLMs actually learn

▶️ Video Tutorialsneural networksvisual

Anthropic IPO, Trump AI EO & ChatGPT 1B Users — Moonshots EP #262

Free

Peter Diamandis covers Anthropic's $965B valuation, AI policy and the 1B-user milestone

Essential for understanding the AI investment landscape in mid-2026 — covers Anthropic S-1, Trump EO dynamics, Claude's 640% YoY growth, and AI robotics strategy

▶️ Video TutorialsAI marketIPO

Google I/O 2026 Keynote

Free

Gemini 3.5, Antigravity agents, AI Mode at 1B users — the full 2-hour keynote

The most product-dense Google I/O in history — watch from 1:20:00 for the Project Astra and Antigravity agent demos that define the 2026 agentic AI playbook

▶️ Video TutorialsGoogleGemini

AI Agents — Eduardo Ordax

Free

Practitioner take on AI agents from AWS's GenAI go-to-market lead

Short-form practitioner video on AI agents from Eduardo Ordax (AWS) — hosted on LinkedIn rather than YouTube, so no embed preview is available on this site

▶️ Video TutorialsAI agentsLinkedIn

Stay current

New prompts & AI news, weekly

No noise. Curated highlights from the library.

Newsletter signup is currently disabled.

Sintra Tesseract

A curated library of AI use cases, mapped across every way to think with a machine.

Open source · Free forever

Discover

Use CasesCollectionsAI Tools DirectoryAI NewsLearning PathsResources & Links

Reference

Claude & AnthropicAI ConceptsAI HistoryAI LabsGoogle AI Tools

Elsewhere

AI Keynote ↗GitHub ↗RSS Feed ↗
© 2026 Sintra · Curated in the open.Built on the void.