> For the complete documentation index, see [llms.txt](https://dev.spectra.finance/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://dev.spectra.finance/integration-reference/spectra-oracles/deterministic-oracles/comparison.md).

# Comparison

Here is a visual comparison of the three pricing models used in Spectra's deterministic oracles. It assumes a duration of 1 year, a 100% implied rate and a par value of 1 for the PT. 

<figure><img src="/files/9L5Flf5M1bkr4adqlGxi" alt=""><figcaption></figcaption></figure>