GPAI Ledger › GPT-5.4 Nano (OpenAI)
GPT-5.4 Nano
Public summary of training content · Article 53(1)(d), Regulation (EU) 2024/1689
Provider: OpenAI — status: Published
OpenAI publishes a public summary of training content for GPT-5.4 Nano under the EU AI Act; every version this ledger has captured is archived below with its hash and timestamp proof.
AIAL metadata: summary dated 2026-07-31, model released 2026-03-12, eval page
Document versions
| Capture (UTC) | Source of copy | URL | SHA-256 | Bytes | Notes |
|---|---|---|---|---|---|
| 20260818T164227Z | provider site | cdn.openai.com/pdf/gpt-5-4-nano-eu-ai-ac…ummary-of-training-content.pdf | 133a5a71e9391827… | 206,642 |
Third-party evaluation
The AI Accountability Lab scores published summaries against the Commission's template and publishes the result. These are captures of their assessment, archived here because they are revised over time and a score is otherwise unrecoverable once changed. It is AIAL's research judgement, not a legal determination, and not the provider's document. Their assessment is archived here but not served on this site or in the dataset: each capture below proves what was published and when, and points to AIAL for the content. Attribution: aial.ie.
| Capture (UTC) | Source of copy | URL | SHA-256 | Bytes | Notes |
|---|---|---|---|---|---|
| 20260930T115531Z | AIAL evaluation page | raw.githubusercontent.com/AIAccountabili…2026-08-17%2008%3A00%3A00.html | dba85c97fd02806b… | 20,413 | the state that stood upstream from 18 Sep 2026 (fetched here on 30 Sep 2026); bytes identical to 20260930T114542Z |
| 20260930T115525Z | AIAL evaluation page | raw.githubusercontent.com/AIAccountabili…/openai-gpt5.4-nano/index.html | dba85c97fd02806b… | 20,413 | the state that stood upstream from 18 Sep 2026 (fetched here on 30 Sep 2026); bytes identical to 20260930T114542Z |
| 20260930T115439Z | AIAL evaluation (earlier state) | raw.githubusercontent.com/AIAccountabili…/evals/openai-gpt5.4-nano.yaml | fcffa3a220499a3d… | 3,250 | the state that stood upstream from 18 Sep 2026 (fetched here on 30 Sep 2026); bytes identical to 20260930T114535Z |
| 20260930T114542Z | AIAL evaluation page | aial.ie/research/gpai-training-transparency/evals/openai-gpt5.4-nano/ | dba85c97fd02806b… | 20,413 | page text changed vs the previous capture of this target (31 word(s) differ in the extracted text) |
| 20260930T114535Z | AIAL evaluation | raw.githubusercontent.com/AIAccountabili…/evals/openai-gpt5.4-nano.yaml | fcffa3a220499a3d… | 3,250 | page text changed vs the previous capture of this target (1 word(s) differ in the extracted text) |
| 20260913T123110Z | AIAL evaluation page | aial.ie/research/gpai-training-transparency/evals/openai-gpt5.4-nano/ | 5679bba256ddec95… | 20,806 | |
| 20260913T123103Z | AIAL evaluation | raw.githubusercontent.com/AIAccountabili…/evals/openai-gpt5.4-nano.yaml | 3832a73a1680b5b4… | 3,250 | bytes identical to 20260912T062317Z |
| 20260912T062317Z | AIAL evaluation (earlier state) | raw.githubusercontent.com/AIAccountabili…/evals/openai-gpt5.4-nano.yaml | 3832a73a1680b5b4… | 3,250 | the state that stood upstream from 10 Sep 2026 (fetched here on 12 Sep 2026) |
| 20260831T114458Z | AIAL evaluation page | raw.githubusercontent.com/AIAccountabili…/evals/gpt-5-4-nano/index.html | 06945a900be43d5a… | 13,209 | the state that stood upstream from 17 Aug 2026 (fetched here on 31 Aug 2026) |
| 20260829T190917Z | AIAL evaluation (earlier state) | raw.githubusercontent.com/AIAccountabili…9d493e/evals/gpt-5-4-nano.yaml | 5715918bf3d6b731… | 3,984 | the state that stood upstream from 17 Aug 2026 (fetched here on 29 Aug 2026); bytes identical to 20260829T142711Z |
Captures of superseded target URLs
Locations this ledger previously tracked for this source (per-row notes give the reason each was superseded) — kept as faithful records of what those URLs served at capture time.
| Capture (UTC) | Source of copy | URL | SHA-256 | Bytes | Notes |
|---|---|---|---|---|---|
| 20260831T120510Z | AIAL evaluation page | aial.ie/research/gpai-training-transparency/evals/gpt-5-4-nano/ | 06945a900be43d5a… | 13,209 | bytes identical to 20260831T114458Z; superseded 13 Sep 2026: AIAL renamed this evaluation (its file is now openai-gpt5.4-nano.yaml), and its page is now tracked under the new name |
| 20260829T142711Z | AIAL evaluation | raw.githubusercontent.com/AIAccountabili…y/main/evals/gpt-5-4-nano.yaml | 5715918bf3d6b731… | 3,984 | superseded 13 Sep 2026: AIAL renamed this evaluation file to openai-gpt5.4-nano.yaml, which is now tracked; this address has answered 404 since 12 Sep 2026 |
| 20260818T164257Z | AIAL archived copy | aial.ie/research/gpai-training-transpare…ve/GPT_5_4_Nano_2026_08_17.pdf | 133a5a71e9391827… | 206,642 | bytes identical to 20260818T164227Z; superseded 13 Sep 2026: AIAL's renamed evaluation file (openai-gpt5.4-nano.yaml) names no archived copy (its archive_file_name reads None), so this address is no longer checked |
Last checked: 2026-10-05 (re-checked on the daily schedule — see Methodology). Seen a summary we missed? See the contact details.