---
title: "See what the model actually reads"
description: "Turn text into exact o200k token IDs and see how output reservations change the usable model context window."
canonical_url: "https://fanout.sh/labs/tokenizer-context"
md_url: "https://fanout.sh/labs/tokenizer-context.md"
access: "public"
---

# See what the model actually reads

Turn text into exact o200k token IDs and see how output reservations change the usable model context window.

---
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