# OpenAI/Anthropic/Google/OpenRouter APIs Projects at AI Tinkerers

> Canonical HTML: https://aitinkerers.org/technologies/openai-anthropic-google-openrouter-apis
> Markdown URL: https://aitinkerers.org/technologies/openai-anthropic-google-openrouter-apis.md
> Technology record last updated: 2026-04-27T19:53:15Z
> Generated: 2026-09-21T02:46:21Z

Access the industry's leading LLMs through a unified, high-performance interface.

Standardize your AI stack with a single integration point for OpenAI, Anthropic, and Google. OpenRouter provides a high-availability gateway to models like GPT-4o, Claude 3.5 Sonnet, and Gemini 1.5 Pro via an OpenAI-compatible API (base_url: https://openrouter.ai/api/v1). This setup eliminates provider lock-in and simplifies key management while offering competitive pricing and automatic fallbacks. Whether you are scaling production traffic or benchmarking the latest frontier models, these APIs deliver the low-latency inference and structured output capabilities required for modern agentic workflows.

- Official technology site: https://openrouter.ai/docs
- Public AI Tinkerers demos and talks: 1
- Result page: 1 of 1

## Recent Public Talks and Demos

### [MARSYS: Multi-Agent Workflows Without the Plumbing](https://lausanne.aitinkerers.org/talks/rsvp_eigQG2pH8qI)

MARSYS is an open-source Python framework for building multi-agent workflows. Define your agents and who talks to who -- the framework handles parallel execution, branch isolation, convergence, context management, and routing automatically. It works with 7+ LLM providers out of the box (OpenAI, Anthropic, Google, local models), ships with ready-to-use agents (browser, file operations, code executor, data analyst), and lets you fine-tune local models directly from execution traces. `pip install marsys` and you're running.

- Event context: AI Tinkerers Lausanne April 2026 Meetup — 2026-04-30 — Lausanne
- Public talk page: https://lausanne.aitinkerers.org/talks/rsvp_eigQG2pH8qI

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