Options screens, a vol surface and a strategy builder — free to look, 50 dollars to keep.
$50/moFree tier
Laevitas
2 products in the catalogue, each on its own card. One vendor, several products, because a merged card could not be compared or priced: the halves have different buyers and different competitors.
Options Greeks, a calibrated vol surface and funding data over REST, WebSocket or MCP.
$500/moMCP