> For the complete documentation index, see [llms.txt](https://docs.optionomega.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.optionomega.com/modeling/modeling-faq.md).

# Modeling FAQ

### Where can I talk about modeling with other OO members?

We have a discussion channel on Discord called [#tests-strats](https://discord.com/channels/882705067210317915/961355812297666691) for strategy discussion. That’s a great place to start.

If you're not on Discord, [join the community](/welcome/discord-community.md).

### How do I know when new features are added?

We post them in the [releases](https://discord.com/channels/882705067210317915/882705067210317919) channel on Discord. If you're not on Discord, [join the community](/welcome/discord-community.md).

### I have the Essential (Backtesting) tier but want to add Modeling. How do I do that?

The self-service portal in the web app lets users change their subscription status or tier at any time. [Check it out](https://youtu.be/zPU9WGgk2a8?si=RQaLrzkYl9vEbUXm).

### What pricing model does the platform use?

The platform uses the **Black-Scholes model** to calculate estimated option prices and Greeks (Delta, Gamma, Theta, Vega, and Rho).\
The Implied Volatility (IV) values used in these calculations are sourced from the OPRA data provider.

### Why is there a difference between the P/L shown on the chart and in the right sidebar?

The discrepancy you may notice between these two displays is due to different data sources:

* **Right Sidebar**: Shows real-time profit and loss based on live market data directly from the OPRA data provider. This reflects current option prices.
* **Chart**: Displays profit and loss calculated using the Black-Scholes model. This provides theoretical pricing based on the model's assumptions and parameters.