DeepSeek context window calculator
Plan how much room your DeepSeek context bundle needs before you upload files or paste a large source package.
DeepSeek V4 Pro budget planner
DeepSeek V4 Pro supports a 1M-token context window and up to 384K output tokens. DeepSeek's flagship open-weight model.
Estimated cost
Source: DeepSeek documentation. Last reviewed 2026-09-08. Prices reviewed 2026-09-08.
Frequently asked questions
What context windows does this calculator use for DeepSeek?
It shows both current V4 variants: DeepSeek V4 Pro and DeepSeek V4 Flash, each with a 1M-token context window and up to 384K output tokens. Select the variant you are using.
Should I fill the whole DeepSeek context window?
Usually no. Reserve room for your instructions and the response. A focused bundle of the right files normally beats a much larger dump of everything you have.
Can Riflet build the source context?
Yes. Riflet can combine folders, PDFs, websites, GitHub repos, Obsidian vaults, and Notion exports into a portable context file for DeepSeek.
Does this work with self-hosted DeepSeek?
The token budgeting is the same, but a self-hosted deployment can be configured with a smaller context length than the hosted API. Check your runtime setting and use the local LLM entry on the token counter if it differs.