Everything you need to get the most out of Meridian — from your first prompt to advanced routing.
Sign up at meridian.openbrain.co.in — no credit card required. Your first project is created automatically so you can start immediately.
Type @claude, @gpt-4o, or any model to route directly. Or just type and let the Brain pick the best one for your task.
Add files, set project rules, lock private chats, and invite collaborators. Your context persists across every session.
@mention any model, route to several at once, or let the Brain choose. See the Models page for the full list.
Each project carries its own model whitelist, file library, and behavioral rules. Learn more on the Workspace page.
Context optimization and smart routing happen before every prompt. Deep dive on the Brain page.
Type / to trigger any action — 17 commands for models, modes, tools, and formatting. See the full list.
Upload images, PDFs, CSVs, and code. Generated artifacts appear in a side panel you can iterate on without losing context.
Switch between Code, Research, Writing, Analysis, Think, and General — each tuned with a precision prompt layer.
If you want to integrate Meridian programmatically, check out the API reference.