How much do hidden reasoning tokens cost?
To estimate the cost of hidden reasoning tokens, you first have to understand how your text maps to tokens. Built for teams using reasoning models, this tool makes the token math concrete so your budgets and context planning are based on real numbers.
Results update automatically as you type.
- • Reasoning models bill hidden reasoning tokens at the output rate.
- Visible output tokens
- 500 tokens
- Reasoning tokens (billed)
- 2,000 tokens
- Cost with reasoning
- $0.0220
- Reasoning overhead / request
- $0.0160
- Reasoning overhead / month
- $800.00
Why this isn't trivial
The part people underestimate: reasoning models generate large amounts of internal reasoning billed as output, so real cost far exceeds the visible answer. In practice the biggest savings come from limiting reasoning effort where the model allows, so it is worth modelling before you commit.
How it's calculated
We estimate this by adding billed reasoning tokens to the visible output at the output rate. Every figure uses the current provider prices baked into the site (reviewed daily), and you can override any input to match your own assumptions.
Frequently asked questions
Do I pay for hidden reasoning?+
Yes — reasoning tokens are billed as output even though you don't see them.
Can I reduce reasoning cost?+
Some models expose a reasoning-effort setting; lower it for simpler tasks.
Are these prices up to date?+
Yes. The model prices behind this calculator are refreshed and reviewed daily, so your estimate reflects current provider rates rather than a stale snapshot.
Related
Estimates for planning. Pricing data last reviewed 28 July 2026.