openai

106 models, with 32 monitored endpoints (21 actively tracked, 11 no longer) across 10 providers. 4 of them show at least one detected change — the model version is nominally fixed, so the movement is in how it is served.

106
Models
32
Monitored endpoints
21
Actively tracked
6
Changes total
10
Providers

Models

Model Monitored endpoints Providers Changes Endpoints changed Last change
gpt-4o-mini 3 2 2 1/3 2026-05-23
gpt-4o-2024-05-13 2 2 2 1/2 2026-05-21
gpt-4o 2 2 1 1/2 2025-10-08
gpt-4o-2024-08-06 2 2 1 1/2 2026-05-25
gpt-oss-120b 9 8 — 0/9 —
gpt-oss-20b 3 3 — 0/3 —
gpt-3.5-turbo-16k 2 2 — 0/2 —
chatgpt-4o-latest retired
1 retired
1 1 — 0/1 —
gpt-3.5-turbo 1 1 — 0/1 —
gpt-3.5-turbo-0613 1 1 — 0/1 —
gpt-4.1 retired
2 errors out · 1 retired
1 1 — 0/1 —
gpt-4.1-mini retired
2 errors out · 1 retired
1 1 — 0/1 —
gpt-4.1-nano retired
2 errors out · 1 retired
1 1 — 0/1 —
gpt-4o-2024-11-20 1 1 — 0/1 —
gpt-4o-mini-2024-07-18 1 1 — 0/1 —
gpt-4o:extended retired
1 retired
1 1 — 0/1 —
gpt-3.5-turbo-instruct errors out
1 errors out
0 0 — 0/0 —
gpt-3.5-turbo:batch untrackable
1 untrackable
0 0 — 0/0 —
gpt-4 too expensive
2 too expensive
0 0 — 0/0 —
gpt-4-turbo too expensive
1 too expensive
0 0 — 0/0 —
gpt-4-turbo:batch untrackable
1 untrackable
0 0 — 0/0 —
gpt-4.1-mini:batch untrackable
1 untrackable
0 0 — 0/0 —
gpt-4.1-nano:batch untrackable
1 untrackable
0 0 — 0/0 —
gpt-4.1:batch untrackable
1 untrackable
0 0 — 0/0 —
gpt-4o-mini:batch untrackable
1 untrackable
0 0 — 0/0 —
gpt-4o:batch untrackable
1 untrackable
0 0 — 0/0 —
gpt-5 untrackable
3 untrackable
0 0 — 0/0 —
gpt-5-image errors out
1 errors out
0 0 — 0/0 —
gpt-5-image-mini errors out
1 errors out
0 0 — 0/0 —
gpt-5-mini untrackable
4 untrackable
0 0 — 0/0 —
gpt-5-mini:batch untrackable
1 untrackable
0 0 — 0/0 —
gpt-5-nano untrackable
4 untrackable
0 0 — 0/0 —
gpt-5-nano:batch untrackable
1 untrackable
0 0 — 0/0 —
gpt-5-pro untrackable
1 untrackable
0 0 — 0/0 —
gpt-5-pro:batch untrackable
1 untrackable
0 0 — 0/0 —
gpt-5.1 untrackable
5 untrackable
0 0 — 0/0 —
gpt-5.1-codex untrackable
1 untrackable
0 0 — 0/0 —
gpt-5.1-codex-max untrackable
1 untrackable
0 0 — 0/0 —
gpt-5.1-codex-mini untrackable
1 untrackable
0 0 — 0/0 —
gpt-5.1:batch untrackable
1 untrackable
0 0 — 0/0 —
gpt-5.2 untrackable
4 untrackable
0 0 — 0/0 —
gpt-5.2-chat untrackable
1 untrackable
0 0 — 0/0 —
gpt-5.2-codex untrackable
1 untrackable
0 0 — 0/0 —
gpt-5.2-pro untrackable
1 untrackable
0 0 — 0/0 —
gpt-5.2-pro:batch untrackable
1 untrackable
0 0 — 0/0 —
gpt-5.2:batch untrackable
1 untrackable
0 0 — 0/0 —
gpt-5.3-codex untrackable
3 untrackable
0 0 — 0/0 —
gpt-5.4 untrackable
7 untrackable
0 0 — 0/0 —
gpt-5.4-image-2 too expensive
1 too expensive
0 0 — 0/0 —
gpt-5.4-mini untrackable
5 untrackable
0 0 — 0/0 —
gpt-5.4-mini:batch untrackable
1 untrackable
0 0 — 0/0 —
gpt-5.4-nano untrackable
4 untrackable
0 0 — 0/0 —
gpt-5.4-nano:batch untrackable
1 untrackable
0 0 — 0/0 —
gpt-5.4-pro untrackable
3 untrackable
0 0 — 0/0 —
gpt-5.4-pro:batch untrackable
1 untrackable
0 0 — 0/0 —
gpt-5.4:batch untrackable
1 untrackable
0 0 — 0/0 —
gpt-5.5 untrackable
7 untrackable
0 0 — 0/0 —
gpt-5.5-pro untrackable
2 untrackable
0 0 — 0/0 —
gpt-5.5-pro:batch untrackable
1 untrackable
0 0 — 0/0 —
gpt-5.5:batch untrackable
1 untrackable
0 0 — 0/0 —
gpt-5.6-luna untrackable
7 untrackable
0 0 — 0/0 —
gpt-5.6-luna-pro untrackable
5 untrackable
0 0 — 0/0 —
gpt-5.6-luna-pro:batch untrackable
1 untrackable
0 0 — 0/0 —
gpt-5.6-luna:batch untrackable
1 untrackable
0 0 — 0/0 —
gpt-5.6-sol untrackable
7 untrackable
0 0 — 0/0 —
gpt-5.6-sol-pro untrackable
5 untrackable
0 0 — 0/0 —
gpt-5.6-sol-pro:batch untrackable
1 untrackable
0 0 — 0/0 —
gpt-5.6-sol:batch untrackable
1 untrackable
0 0 — 0/0 —
gpt-5.6-terra untrackable
7 untrackable
0 0 — 0/0 —
gpt-5.6-terra-pro untrackable
5 untrackable
0 0 — 0/0 —
gpt-5.6-terra-pro:batch untrackable
1 untrackable
0 0 — 0/0 —
gpt-5.6-terra:batch untrackable
1 untrackable
0 0 — 0/0 —
gpt-5:batch untrackable
1 untrackable
0 0 — 0/0 —
gpt-6-astra untrackable
7 untrackable
0 0 — 0/0 —
gpt-6-astra-pro untrackable
6 untrackable
0 0 — 0/0 —
gpt-6-astra-pro:batch untrackable
1 untrackable
0 0 — 0/0 —
gpt-6-astra:batch untrackable
1 untrackable
0 0 — 0/0 —
gpt-6-luna untrackable
7 untrackable
0 0 — 0/0 —
gpt-6-luna-pro untrackable
6 untrackable
0 0 — 0/0 —
gpt-6-luna-pro:batch untrackable
1 untrackable
0 0 — 0/0 —
gpt-6-luna:batch untrackable
1 untrackable
0 0 — 0/0 —
gpt-6-sol untrackable
7 untrackable
0 0 — 0/0 —
gpt-6-sol-pro untrackable
6 untrackable
0 0 — 0/0 —
gpt-6-sol-pro:batch untrackable
1 untrackable
0 0 — 0/0 —
gpt-6-sol:batch untrackable
1 untrackable
0 0 — 0/0 —
gpt-6.1-sol untrackable
8 untrackable
0 0 — 0/0 —
gpt-6.1-sol-pro untrackable
7 untrackable
0 0 — 0/0 —
gpt-6.1-sol-pro:batch untrackable
1 untrackable
0 0 — 0/0 —
gpt-6.1-sol:batch untrackable
1 untrackable
0 0 — 0/0 —
gpt-audio errors out
1 errors out
0 0 — 0/0 —
gpt-audio-mini errors out
1 errors out
0 0 — 0/0 —
gpt-chat-latest untrackable
1 untrackable
0 0 — 0/0 —
gpt-oss-120b:batch untrackable
1 untrackable
0 0 — 0/0 —
gpt-oss-20b:batch untrackable
1 untrackable
0 0 — 0/0 —
gpt-oss-safeguard-20b not selected
1 not selected
0 0 — 0/0 —
o1 untrackable
1 untrackable
0 0 — 0/0 —
o1-pro untrackable
1 untrackable
0 0 — 0/0 —
o3 untrackable
1 untrackable
0 0 — 0/0 —
o3-mini untrackable
1 untrackable
0 0 — 0/0 —
o3-mini-high untrackable
1 untrackable
0 0 — 0/0 —
o3-mini:batch untrackable
1 untrackable
0 0 — 0/0 —
o3-pro untrackable
1 untrackable
0 0 — 0/0 —
o3:batch untrackable
1 untrackable
0 0 — 0/0 —
o4-mini untrackable
1 untrackable
0 0 — 0/0 —
o4-mini-high untrackable
1 untrackable
0 0 — 0/0 —
o4-mini:batch untrackable
1 untrackable
0 0 — 0/0 —
106 models · monitored since 2025-06-26

Timothée Chauvin, Erwan Le Merrer, François Taïani, Gilles Tredan (2026), "Log Probability Tracking of LLM APIs". ICLR 2026. https://arxiv.org/abs/2512.03816

Timothée Chauvin, Clément Lalanne, Erwan Le Merrer, Jean-Michel Loubes, François Taïani, Gilles Tredan (2026), "Token-Efficient Change Detection in LLM APIs". ICML 2026. https://arxiv.org/abs/2602.11083

@inproceedings{
chauvin2026log,
title={Log Probability Tracking of {LLM} {API}s},
author={Timothee Chauvin and Erwan Le Merrer and Francois Taiani and Gilles Tredan},
booktitle={The Fourteenth International Conference on Learning Representations},
year={2026},
url={https://openreview.net/forum?id=hFxivbAgVP}
}

@inproceedings{
chauvin2026tokenefficient,
title={Token-Efficient Change Detection in {LLM} {API}s},
author={Timothee Chauvin and Cl{\'e}ment Lalanne and Erwan Le Merrer and Jean-Michel Loubes and Francois Taiani and Gilles Tredan},
booktitle={Forty-third International Conference on Machine Learning},
year={2026},
url={https://openreview.net/forum?id=7cMlZZYZT0}
}