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How Are Charges Calculated and Running Environment Instances Determined in Python Flight Computations?

·Jun 10, 2026 05:30 PM·

Regarding Flights. How am I charged by computing in python? Whata kind of instance is used for the running enviroment?

7 comments

· Sorted by Oldest

Adam E.
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Hey Patrick, Good question. You are charged at $0.60/hr billed to the second for the Python work only while the script is running. Any other questions? Anything cool you're planning to build?
Patrick G.
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Regarding the python instance, which one is it in terms of vcpu/ram
Patrick G.
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I'm considering off loading some tasks from AWS to this new flight
Neil B.
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Patrick G. - Just to be crystal clear here, you are charged for the duckling compute size you run the flight on and then $.60/hr for the flight runner (billed by the second)
➕1
Adam E.
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Adding on to Neil's comment, the Python runner has the following specs: • 2 vCPU • 16 GB RAM • 150 GB scratch disk This is distinct from whichever Duckling instance you are running your query load on.
👍1
Patrick G.
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Thank you guys. Crystal clear!
Patrick G.
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So each flight runs a separate instance? In case I run 2 flights in parallel, does MD handle write concurrency if it occurs? I mean, if the tasks refer to the same table.