Dataset Viewer
The dataset viewer is not available for this split.
Cannot load the dataset split (in streaming mode) to extract the first rows.
Error code: StreamingRowsError
Exception: ArrowInvalid
Message: JSON parse error: The document is empty.
Traceback: Traceback (most recent call last):
File "/usr/local/lib/python3.14/site-packages/datasets/packaged_modules/json/json.py", line 324, in _generate_tables
df = pandas_read_json(f)
File "/usr/local/lib/python3.14/site-packages/datasets/packaged_modules/json/json.py", line 38, in pandas_read_json
return pd.read_json(path_or_buf, **kwargs)
~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.14/site-packages/pandas/io/json/_json.py", line 791, in read_json
json_reader = JsonReader(
path_or_buf,
...<16 lines>...
engine=engine,
)
File "/usr/local/lib/python3.14/site-packages/pandas/io/json/_json.py", line 905, in __init__
self.data = self._preprocess_data(data)
~~~~~~~~~~~~~~~~~~~~~^^^^^^
File "/usr/local/lib/python3.14/site-packages/pandas/io/json/_json.py", line 917, in _preprocess_data
data = data.read()
File "/usr/local/lib/python3.14/site-packages/datasets/utils/file_utils.py", line 844, in read_with_retries
out = read(*args, **kwargs)
File "<frozen codecs>", line 325, in decode
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xbf in position 23: invalid start byte
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/src/services/worker/src/worker/utils.py", line 147, in get_rows_or_raise
return get_rows(
dataset=dataset,
...<4 lines>...
column_names=column_names,
)
File "/src/libs/libcommon/src/libcommon/utils.py", line 272, in decorator
return func(*args, **kwargs)
File "/src/services/worker/src/worker/utils.py", line 127, in get_rows
rows_plus_one = list(itertools.islice(safe_iter(ds, dataset=dataset), rows_max_number + 1))
File "/src/services/worker/src/worker/utils.py", line 483, in safe_iter
yield from ds.decode(False) if ds.features else ds
File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 2840, in __iter__
for key, example in ex_iterable:
^^^^^^^^^^^
File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 2373, in __iter__
for key, pa_table in self._iter_arrow():
~~~~~~~~~~~~~~~~^^
File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 2398, in _iter_arrow
for key, pa_table in self.ex_iterable._iter_arrow():
~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 536, in _iter_arrow
for key, pa_table in iterator:
^^^^^^^^
File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 419, in _iter_arrow
for key, pa_table in self.generate_tables_fn(**gen_kwags):
~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^
File "/usr/local/lib/python3.14/site-packages/datasets/packaged_modules/json/json.py", line 327, in _generate_tables
raise e
File "/usr/local/lib/python3.14/site-packages/datasets/packaged_modules/json/json.py", line 290, in _generate_tables
pa_table = paj.read_json(
io.BytesIO(batch), read_options=paj.ReadOptions(block_size=block_size)
)
File "pyarrow/_json.pyx", line 342, in pyarrow._json.read_json
File "pyarrow/error.pxi", line 155, in pyarrow.lib.pyarrow_internal_check_status
File "pyarrow/error.pxi", line 92, in pyarrow.lib.check_status
raise convert_status(status)
pyarrow.lib.ArrowInvalid: JSON parse error: The document is empty.Need help to make the dataset viewer work? Make sure to review how to configure the dataset viewer, and open a discussion for direct support.
Disclosure completeness of public AI benchmark artifacts
Signed, dated records of what four public AI benchmark artifacts state about themselves. Published by Council of AI (CSOAI Ltd, England and Wales, no. 16939677). Human page: https://councilof.ai/measurements/disclosure-completeness
These records count what each artifact states. They do not rank, grade or compare any model or platform, and they are not certifications. Where something was not measured, the record says UNMEASURED and gives no number.
Set 2026-09-30
| Record | What it measures | Result |
|---|---|---|
swebench-logs-pointer |
SWE-bench leaderboards.json: entries that state a logs pointer |
287 of 323. Whether the pointers resolve: UNMEASURED (none requested) |
epoch-date-and-n |
Epoch AI benchmark_data.zip: result rows that state a result date and a sample size |
11,112 rows in 87 files: 6,189 state a date, 330 state n, 33 both |
lmarena-publish-lag |
LMArena HF dataset: lag from the stated as-of date to each config's latest push; rows stating n | 22 configs; 29,394 of 29,394 rows state n; lag 3.03 to 27.10 h (the as-of is a date, so a 24 h band) |
openrouter-hf-declared-fields |
OpenRouter context_length vs the named Hugging Face repo's config.json |
178 models: 105 agree, 56 differ (both values named), 17 UNMEASURED. Licence agreement UNMEASURED on all 178 (OpenRouter declares no licence field) |
The figures above are copied from set.json; the records are the authority.
Files
disclosure-completeness-2026-09-30/ is byte-identical to https://councilof.ai/interop/disclosure-completeness-2026-09-30/:
set.json, verify.py, method/adapters.py (the measurement code, pinned by sha256 in every record), and per record
record.json, record.signed.json (Ed25519, did:web:csoai.org#board-attestation-1) and record.json.ots
(OpenTimestamps, pending Bitcoin commitment at publication).
Verify
cd disclosure-completeness-2026-09-30
python3 verify.py # bytes + signatures, key from https://csoai.org/.well-known/did.json
python3 verify.py --recompute BLOBDIR # re-run each measurement from its input bytes (named by sha256)
Input bytes are not republished here because their licences differ; each record names its source URLs and pins each input by sha256.
Sources and licences
- Epoch AI, "Capabilities & benchmarking". Published online at epoch.ai. Retrieved from https://epoch.ai/benchmarks (CC BY 4.0).
- LMArena, Hugging Face dataset
lmarena-ai/leaderboard-dataset(CC BY 4.0). Ratings and ranks are not read into the record. - SWE-bench,
leaderboards.json(swe-bench.github.io). A catalogue states CC BY-NC 4.0; the GitHub licence field reads NOASSERTION. Only our counts and the upstream's own entry identifiers are published. - OpenRouter
/api/v1/models(API terms, not a data licence) and each named Hugging Face repository. Only declared context-length numbers and repository ids are published.
Our records: CC BY 4.0, attribute "Council of AI, CSOAI Ltd, councilof.ai". Corrections: https://councilof.ai/corrections
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