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tools / context window simulator
Context Window "Bloat" Simulator
Most chat agents naively re-send the entire conversation history on every turn. See exactly how that compounds your costs — and how much you're paying for tokens you've already processed.
500 tokens
100 tokens
400 tokens
20 turns
Input: $2.5/1M · Output: $10/1M
Cost per turn — Value vs. Waste
Value = new tokens being processed. Waste = old history re-sent to the model every turn.
Turn 20 vs Turn 1
5.3× more expensive
compounding input cost
Waste share
68% wasted
$0.2375 of $0.3475
Total conversation cost
$0.3475
95.0k re-processed tokens
Turn 1 → Turn 20 cost
$0.00550 → $0.0292
per individual turn
You are paying 10× more for turn 20 than turn 1. Plug in FluxGate to track your live conversation lengths and identify exactly when context-truncation logic needs to kick in.
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