Subscribe to Helious Pro

Four plans, one ladder

Helious has four plans. A free account costs nothing and gets an API key with 7 days of news history, an hour behind live. Starter is USD 14.99 per month: the news and prints live as they land, plus the US Treasury curve 60 minutes behind. Pro is USD 39.99 per month: every market price live and the entire terminal, squawk included. Ultimate is USD 99 per month: commercial use and a dedicated streaming WebSocket on top. Every plan sees the same endpoints and shapes, so nothing you build breaks on an upgrade. Head to the [live desk](/) and follow the subscribe prompt to start.

What Pro includes

The live news feed is market-moving and de-duplicated, bucketed into tabs: ALL, MOVING, CB TALK, GEO, BONDS, DATA, CHATTER: with a market-impact slider so you can dial out noise. Economic releases arrive as breakdowns seconds after print: actual vs forecast vs prior plus a standardized surprise z-score so a beat or miss is measured in sigma, not vibes. See what's on deck on the economic calendar.

Treasury auction analysis lands seconds after results: the real when-issued tail or stop-through in basis points, bid-to-cover against its 12-month average, the indirect / direct / dealer split, and a STRONG / IN LINE / WEAK verdict. Every auction rolls up into the auction hubs and the tail dataset.

You also get Fed-speak tracking: officials flagged the moment they speak with a hawk/dove read, tied to the Fed and FOMC pages, a dual-asset momentum SCORE gauge for bonds and equities, server-side alerts with regime-aware move thresholds and per-symbol arming, a curve and spread board on the rates view, and noise-cleaned live squawk audio.

How billing works

You're charged your plan's price at signup and again on each renewal date, monthly or yearly as you choose. Card details are entered directly into our PCI-compliant payment processor and never touch our servers. You can cancel anytime and keep access through the period you've already paid for.

Getting started

Open the [terminal](/), subscribe, and you're live immediately, no onboarding queue. If you want to see how the pieces fit before you commit, browse the guides and the methodology. Questions on billing or access go to contact.