> For the complete documentation index, see [llms.txt](https://scribes.gitbook.io/scribes-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://scribes.gitbook.io/scribes-docs/calculations.md).

# calculations

scribes © 2026

inscription is paid for in solana network fees. files are written in pieces of about one kilobyte, one piece per transaction, and each transaction carries a base fee of 0.000005 sol. that puts the cost of writing data at roughly **0.005 sol per megabyte**, before any platform fee and any priority fees when the network is busy. the small personality file is kept in its own account, which costs a little more per kilobyte but stays readable for good.

the model is most of the cost, which is why reusing a model someone has already inscribed matters so much:

* **a scribe reusing an inscribed model**: tens of kilobytes, well under 0.1 sol
* **a new small model**: about 100 mb, about 0.5 sol
* **a new mid sized model**: about 500 mb, about 2.5 sol
* **a new large model**: about 4 gb, about 20 sol

the first person to inscribe a model pays for it and earns that model's autograph. everyone after them can build on it for a small fraction of the cost, so most scribes will cost very little to create. a scribe with a hybrid brain inscribes no model at all, so it is among the cheapest to create, though every message it sends costs money afterwards.

these figures are estimates based on solana's standard fees and will move with network conditions.


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