Free GEX Data: What the Limits Actually Are
Free gamma exposure data exists, and free gamma exposure data is genuinely useful for learning. The limits attached to free tiers are rarely stated plainly, so here are the limits and what each limit costs a trader in practice.
Can you get gamma exposure data for free?
Yes. Several vendors publish free gamma exposure snapshots and free API tiers, and those free tiers are a reasonable way to learn how gamma exposure behaves. Free tiers are limited by design, because the vendor pays to license the underlying feed being redistributed to every free user.
What limits do free GEX tools place on a trader?
Free positioning tiers commonly cap usage at roughly five API requests per day, exclude the index and ETF symbols most traders actually want, restrict each request to a single expiration, and serve responses cached for up to fifteen minutes rather than current quotes.
Each restriction is individually reasonable and collectively disqualifying for live work. Five requests per day covers a single morning check on one symbol. Excluding index symbols removes the underlyings where gamma exposure matters most, because index option chains carry the deepest open interest. A single expiration hides the full chain picture, and a fifteen minute cache is an eternity during the final hour of a 0DTE session.
Why does the Cipher platform have no request cap?
The Cipher platform imposes no request cap because the Obsidian desk is not paying to redistribute a licensed feed. Each trader queries a personal broker entitlement under the BYOK model, so the marginal cost of an extra request sits with that trader's own broker rather than with Obsidian.
Does Obsidian give away free GEX data?
No. The Obsidian desk distributes no market data whatsoever, on any tier, free or paid. Obsidian publishes education and supplies the Cipher terminal that computes positioning locally from a trader's own broker connection, which is a deliberately different business model from a data vendor.
| Restriction | Typical free data tier | Cipher under BYOK |
|---|---|---|
| Daily request quota | Commonly 5 API requests per day | None. A trader's own key sets the limit. |
| Index and ETF symbols | SPY, QQQ and SPX often excluded from free tiers | Included. Entitlement follows the trader's own key. |
| Expirations | Typically one expiration per request | Full chain, every listed expiration. |
| Data freshness | Free responses cached up to 15 minutes | Set by the trader's own entitlement, not by Obsidian. |
| Who holds the data | The vendor redistributes a shared feed | Nobody redistributes. Data moves broker to browser. |
Frequently asked questions
Is free GEX data accurate?
Free gamma exposure data is usually computed correctly, but free tiers often serve cached responses. A correct number that is fifteen minutes old can still be wrong for a decision being made now.
What is the catch with free GEX heatmaps?
The common pattern is that the heatmap itself is free to view while the symbols, expirations and refresh rate that make the heatmap tradable sit behind a paid tier.
Do I need a paid data plan to use Cipher?
A trader needs a supported broker account with option chain access. Most supported broker accounts include that access without a separate data subscription.