Datasets:

kestrelfield
/

llmledger

license: mit
pretty_name: llmledger
language:
  - en
tags:
  - llm
  - pricing
  - litellm
  - survival-analysis
  - competing-risks
size_categories:
  - 10K<n<100K
configs:
  - config_name: changes
    data_files: changes.csv
    default: true
  - config_name: models
    data_files: models.csv
  - config_name: estimates
    data_files: estimates.csv

llmledger

Every change to LiteLLM's model price catalogue since 6 September 2023: models added and removed, prices changed, retirement dates set. Also one row per model, and estimates of how likely a newly added model is to have its price changed, get a retirement date, or be removed.

Data as of 20 October 2026, 17:50 UTC (LiteLLM commit e63aec0), built with llmledger version 1.19: the same data its live page showed that day. The first upload (version 1.0 data, 13 October 2026) is in this repository's history.

Code, method, specification and tests: https://github.com/pouriaetab/llmledger
Live results, rebuilt every day: https://pouriaetab.github.io/llmledger/
Archived release: https://doi.org/10.5281/zenodo.23330454

Not financial or procurement advice. The data describes edits to a public catalogue, not what any model costs you.

Files

`changes.csv`: one row per change (17,333 rows)

Column	Meaning
`when`	Time of the LiteLLM commit, UTC
`sha`	LiteLLM commit
`model`	Model name as LiteLLM lists it
`kind`	`start` (in the first version), `added`, `removed`, `price` (a field whose name contains cost or pricing changed), `deprecation` (the retirement date changed)
`field`	The field that changed, for `price` and `deprecation` rows
`old`, `new`	Value before and after, as JSON (`null` when absent)
`flag`	`bulk` (removed on a day with 50 or more removals), `unit` (a price made 100 times larger or smaller), `reverted` (undone within 30 days, or the change that undid it), `likely` (a likely correction: a price change in the model's first 7 days, from 0, or of 10 times or more either way), or empty

`models.csv`: one row per model (5,447 rows)

Model name, a grouped maker and name from naming rules (for example, eu.anthropic.claude-3-5-sonnet-20241022-v2:0 becomes anthropic / claude-3.5-sonnet), host, mode, status, dates added and removed, retirement date, input and output price in US dollars per million tokens, number of price changes (leaving out flagged ones), first exit, age in days for models still listed with no exit, and the cache read and cache write prices in US dollars per million tokens (the last two columns, added after version 1.0).

`estimates.csv`: competing risks estimates (100 rows)

Aalen-Johansen cumulative incidence of each first exit (price change, retirement, removal, none) at 30, 90, 180, 365 and 730 days after a model was added, with 95% bootstrap intervals (1,000 resamples) and the number of models still followed. Five definitions: main, headline (input and output token prices only), no_first_week, real_only (leaving out changes flagged bulk, unit or reverted), and likely_real (also leaving out likely corrections). In a labelled sample, about 6 in 10 first price changes were corrections of the catalogue rather than real price changes, so main overstates real ones.

How it was built

Every version of model_prices_and_context_window.json on LiteLLM's main branch was read in order with git and compared with the one before. The full method, definitions and known limitations are in the specification.

Citation

Emami Tabrizi, P. (2026). llmledger: what happens to an LLM after it joins a price catalogue (version 1.19.0). Zenodo. https://doi.org/10.5281/zenodo.23330454

Licence and source

The data is derived from BerriAI/litellm, which is available under the MIT licence below, and is shared under the same licence. llmledger is independent and not affiliated with or endorsed by BerriAI.

MIT License

Copyright (c) 2023 Berri AI

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of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
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furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.