AI Cost Index
What it costs to run AI, tracked over time
A free, citable benchmark of the going rate for AI. We track the blended price per million tokens of fixed baskets of models, recorded over time, so you can see exactly where token economics are heading. Prices are falling now. They will not fall forever.
Updated 5 hours ago. Basket version v1. Source: LiteLLM open dataset.
Frontier Index
One flagship model per major provider
Flat since tracking began Jun 15, 2026.
Budget Index
One cost-efficient workhorse per major provider
Flat since tracking began Jun 15, 2026.
History
Blended price per million tokens, recorded over time. The series grows daily and reconstructs each historical point at the date a constituent price changed.
Methodology
How the index is built
Each index is the equal-weighted average of its constituents' blended price: a fixed 3:1 input-to-output token ratio, calculated as (3 x input + 1 x output) / 4, in US dollars per million tokens. Fixing the ratio means the index measures price movement, not a changing usage mix.
Baskets are fixed and named so the series stays comparable over time. Each slot lists candidate model keys, and the first one present in the catalog on a given date is used. Prices come from the LiteLLM open dataset, synced daily. Historical points are reconstructed from our price version history.
This is a reference benchmark, not financial advice. Real costs depend on your own usage mix, caching, and discounts. Track your own numbers with the free tracker.
Frontier basket
| Provider | Model | Blended |
|---|---|---|
| anthropic | claude-opus-4-6 | $10.00 |
| openai | gpt-4o | $4.38 |
| gemini-2.5-pro | $3.44 | |
| mistral | mistral/mistral-large-latest | $0.75 |
Budget basket
| Provider | Model | Blended |
|---|---|---|
| anthropic | claude-haiku-4-5 | $2.00 |
| openai | gpt-4o-mini | $0.26 |
| gemini-2.5-flash | $0.85 | |
| mistral | mistral/mistral-small-latest | $0.09 |
| deepseek | deepseek-chat | $0.32 |
Citation
How to cite this
The index is free to use and cite under CC BY 4.0. Raw data is available as CSV and JSON.
Champlin Enterprises. (2026). MyTokenTracker AI Cost Index [Data set]. Retrieved June 17, 2026, from https://mytokentracker.io/cost-index
@misc{mtt_ai_cost_index,
title = {MyTokenTracker AI Cost Index},
author = {Champlin Enterprises},
year = {2026},
howpublished = {\url{https://mytokentracker.io/cost-index}},
note = {Accessed: June 17, 2026}
}