Difference between execution costs on remix an Ganache?

External question — Ethereum Stack Exchange Author: Mohamed Original post: https://ethereum.stackexchange.com/questions/60343 License: CC BY-SA 4.0 — https://creativecommons.org/licenses/by-sa/4.0/ Adaptation: HTML converted to plain text; contact email addresses removed. I created a contract on remix and then deployed it. when I call any function there is an execution cost in gas. I also deployed the same contract on Ganache for testing. I find the execution cost in remix is 525424 gas but in Ganache, i found the gas used 1214584 gas. Is the execution costs in remix is accurate, Is it simulate the actual execution costs on etherum network? How can I know the execution cost in ganache?

External answer — Ethereum Stack Exchange Author: HODL_Sage Original post: https://ethereum.stackexchange.com/a/171975 License: CC BY-SA 4.0 — https://creativecommons.org/licenses/by-sa/4.0/ Adaptation: HTML converted to plain text; contact email addresses removed. Execution costs differ because Remix often uses network-like environments that estimate gas more realistically, while Ganache runs a fully local chain with simplified rules and minimal gas pressures. As a result, Ganache transactions appear cheaper and faster, whereas Remix provides behavior closer to real deployment conditions, exposing truer cost expectations.