Context Window Cost Calculator

This estimator compares baseline and target non-task prompt-token assumptions with shared workload inputs, then reports cost and margin deltas from trimming prompt overhead.

How It Works

1. Set provider/model plus workload assumptions.
2. Set baseline non-task prompt tokens and target trimmed value.
3. Review cost delta, overhead-share shift, and monthly savings.

Formula

candidate_input_tokens = task_tokens + target_non_task_tokens

cost_delta = cost_candidate - cost_baseline

Assumptions and Units

• Currency: USD
• Token unit: token
• Task tokens stay constant between baseline and candidate runs
• Pricing source: daily snapshot in repo, no runtime scraping

Related resources: RAG Retrieval Cost Calculator, Cache Savings Simulator, RAG Cost per User, Context Bloat in RAG, How Many Tokens Per Request?.