BNB Chain vs Polygon: which has cheaper gas?

Polygon, decisively. It was cheaper than BNB Chain in 100% of the last 332 hours we observed — not most of the time, effectively all of the time. This is not a close call and there is no window in which the answer flips.

Priced as a swap at each chain's own mean fee, that is $0.0056 on BNB Chain against $0.0031 on Polygon. Steadiness differs too: BNB Chain's fee spans 1.0× between its quiet and busy hours, Polygon's 1.3×. Neither is dramatically more predictable than the other.

BNB Chain pays gas in BNB and Polygon in POL, so their gwei numbers are not comparable to each other — BNB gwei and POL gwei denominate different assets. Only the dollar column compares these two.

Side by side, right now

TransactionBNB ChainPolygon
Current fee0.050 gwei249.0 gwei
Send native token$0.00078$0.00047
Send an ERC-20 token$0.0024$0.0015
Swap on a DEX$0.0056$0.0034

Gas units are typical values, not measurements. Dollar figures use the current BNB and POL price.

Over the last 30 days

Hours compared
332
BNB Chain cheaper in
0%
Times the lead changed
0
Mean swap cost gap
$0.0025

Questions

Is BNB Chain or Polygon cheaper for gas?

Polygon was cheaper in 100% of the 332 hours compared over the last 30 days. The ranking did not flip once in that window.

Can I compare their gwei figures directly?

BNB Chain pays gas in BNB and Polygon in POL, so their gwei numbers are not comparable to each other — BNB gwei and POL gwei denominate different assets. Only the dollar column compares these two.