Coworker Desktop App Works with Any OpenAI-Compatible Endpoint

Melvin Vivas · X post · 2026-08-29 · Open on X

Topics: AI Dev Tools & Productivity, LLM Fundamentals, AI Agents, Tool Use & MCP · Level: beginner

Summary

Melvin Vivas says his local-first desktop app Coworker can connect to any OpenAI-compatible API endpoint. He shows it running on Baseten's inference platform with the GLM 5.3 Flash model, so you aren't tied to a single model provider.

Key points

• Coworker accepts any OpenAI-compatible endpoint, so you can swap model providers without code changes.
• The creator runs it with Baseten as the inference provider.
• The model used is GLM 5.3 Flash, an alternative to OpenAI models.
• The OpenAI-compatible API format is a de facto standard many inference hosts support, which makes switching providers easy.

Resources mentioned

• Coworker (donvito/coworker) · repo · github.com · free
  The creator's local-first desktop app where you pick an AI coworker and have it produce work such as invoices as finished PDFs.
  Also in: Claude Opus 5.5 for Video Making: Creator's Showcase Thread (Coworker) (Melvin Vivas on X · notes), Coworker: free open-source desktop AI coworker app (Melvin Vivas on X · notes), Coworker: Open-Source Desktop App for AI Agents (Melvin Vivas on X · notes), Using Devin AI to Test the Coworker Desktop App on Windows (Melvin Vivas on X · notes) and 38 more
• Baseten · tool · x.com · paid
  Model inference platform offering dedicated GPU deployments for serving open models.
  Also in: Serving Qwen3.8 27B FP8 on an H100 with Baseten dedicated inference (Melvin Vivas on X · notes), Running GLM 5.3 Flash on Baseten with the Pi Coding Agent (Melvin Vivas on X · notes), GLM 5.3 Flash Now Available on Baseten (Melvin Vivas on X · notes), GLM-5.2 Vision on Baseten: Turning Images into Code (Melvin Vivas on X · notes) and 6 more
• GLM 5.3 Flash · tool · huggingface.co · free
  A fast model from Z.ai's GLM family, used here for agentic coding.
  Also in: Running GLM 5.3 Flash on Baseten with the Pi Coding Agent (Melvin Vivas on X · notes)

Try this

• Download Coworker from donvitocodes.com/coworker and point it at an OpenAI-compatible endpoint.