Cosmos

A terminal AI chat interface for people who live in the terminal.

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Built for the terminal. Not around it.

01

Twenty-five free models.

GPT, Claude, Gemini, Llama, Mistral and more — all free, all via OpenRouter. Switch mid-session.

02

History that sticks.

Every conversation synced to the cloud. Organized into folders. Always there when you come back.

03

Attach anything.

Drop in images, PDFs, DOCX, or any text file. The model sees it all.

04

Rich output, rendered.

Mermaid diagrams, bar charts, tables, and full Markdown — rendered inline, right in the terminal.

The conversation interface.

cosmos — chat
Cosmos chat interface

Up and running in thirty seconds.

Install via pip, sign in, and you're talking to twenty-five models before your coffee cools.

Create an account →
$ pip install cosmos-ai
Successfully installed cosmos-ai
$ cosmos
✓ Authenticated
✓ Loading history...
Welcome back.