{"report_target":{"type":"measurement","id":"b8fba68f-ec6f-4e0e-8f34-3c7a3ffe515e"},"metric":"token_delta","formula_version":1,"value":-19.25,"value_lo":-19.3125,"value_hi":-19.25,"value_uncensored":null,"floor_cells":null,"panel_models":["cl100k_base","o200k_base"],"panel_members":2,"panel_neff":2,"panel_neff_basis":"computed:tokenizer_lineage","panel_neff_declared":null,"panel_agreement":null,"resample_down":null,"yield_report":null,"calibration":null,"replication_comparison":null,"study_context":{"report_only":true,"study_purpose":null,"study_scope":null,"boundary":"Declared by the experiment\u2019s author. This label neither certifies claim coverage nor changes validity, settlement or readiness. 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under the reading I hold, a character cap, it is accepted; it was accepted, so it separates them.","ainglish":"The accepted 1993-character, 2019-byte post tells-apart(a byte cap: reject | a character cap: accept)."},{"english":"The second read at 09:00Z returned the row after the edge cache expired: under the rival reading, an origin 404, it returns 404; under the reading I hold, a stale edge cache, it returns 200; it returned 200, so it separates them.","ainglish":"The second read at 09:00Z returned the row after the edge cache expired tells-apart(an origin 404: 404 | a stale edge cache: 200)."},{"english":"The comment count caught up 70 seconds after the post count: under the rival reading, a single counter, there is no lag; under the reading I hold, a lagging replica, there is a lag; there was a lag, so it separates them.","ainglish":"The comment count caught up 70 seconds after the post count tells-apart(a single counter: no lag | a lagging replica: a lag)."},{"english":"The 1983-character, 1985-byte body was accepted: under the rival reading, a byte cap, it is rejected; under the reading I hold, a character cap, it is accepted; it was accepted, so it separates them, and the test can only run on bodies whose character count and byte count fall on opposite sides of 2000.","ainglish":"The 1983-character, 1985-byte body was accepted tells-apart(a byte cap: reject | a character cap: accept) over(bodies whose character count and byte count fall on opposite sides of 2000)."},{"english":"The 429 arrived on the sixth request within one second: under the rival reading, a per-key limit, that request returns 200; under the reading I hold, a per-address limit, it returns 429; it returned 429, so it separates them, and the test can only run where two keys share one address.","ainglish":"The 429 arrived on the sixth request within one second tells-apart(a per-key limit: 200 | a per-address limit: 429) over(two keys sharing one address)."},{"english":"The 03:00Z retry succeeded without a new token: under the rival reading, token expiry, it succeeds; under the reading I hold, clock skew, it fails; it succeeded, so it separates them.","ainglish":"The 03:00Z retry succeeded without a new token tells-apart(token expiry: succeed | clock skew: fail)."},{"english":"The migration ran again on the fresh clone: under the rival reading, a stale version row, it runs again; under the reading I hold, a skipped file, it is skipped again; it ran again, so it separates them.","ainglish":"The migration ran again on the fresh clone tells-apart(a stale version row: run again | a skipped file: skipped again)."},{"english":"The suite passed once the cache pool was cleared: under the rival reading, a throttle counter in the cache, it passes; under the reading I hold, a dropped test table, it fails; it passed, so it separates them.","ainglish":"The suite passed once the cache pool was cleared tells-apart(a throttle counter in the cache: pass | a dropped test table: fail)."},{"english":"The 2026-character draft was rejected, but a byte cap and a character cap both predict rejection there, so it does not separate them.","ainglish":"The 2026-character draft was rejected fits-both(a byte cap: reject)."},{"english":"The first read returned 404, but an origin 404 and a stale edge cache both predict 404 on that read, so it does not separate them.","ainglish":"The first read returned 404 fits-both(an origin 404: 404)."},{"english":"The first five requests returned 200, but a per-key limit and a per-address limit both predict 200 for those five, so they do not separate them.","ainglish":"The first five requests returned 200 fits-both(a per-key limit: 200)."},{"english":"The fourth full run in the hour returned 429s, but a per-hour throttle and a per-minute throttle both predict 429s on that run, so it does not separate them.","ainglish":"The fourth full run in the hour returned 429s fits-both(a per-hour throttle: 429s)."},{"english":"The scheduled FAIL line carried no run_kind: under the rival reading, a hand start, it carries run_kind=manual; under the reading I hold, a timer start, it carries run_kind=timer; it carried neither, so it contradicts both.","ainglish":"The scheduled FAIL line carried no run_kind fits-neither(a hand start: run_kind=manual | a timer start: run_kind=timer)."},{"english":"The slot was created with a digest of all zeros: under the rival reading, an empty queue, no slot is created; under the reading I hold, a full queue, a slot with a nonzero digest is created; it matched neither, so it contradicts both.","ainglish":"The slot was created with a digest of all zeros fits-neither(an empty queue: no slot | a full queue: a slot with a nonzero digest)."},{"english":"The 2026-10-05 FAIL line carried no run_kind, though a hand start and a timer start both predict a FAIL line carrying its run_kind, so it contradicts both.","ainglish":"The 2026-10-05 FAIL line carried no run_kind fits-neither(a hand start: a FAIL line carrying run_kind)."},{"english":"The replica served the new count before the primary did, though a single counter and a lagging replica both predict the primary first, so it contradicts both.","ainglish":"The replica served the new count before the primary did fits-neither(a single counter: the primary first)."}],"estimand_contract":{"kind":"ainglish.estimand-shadow.v1","unit_span":"pair","contrast":"token_delta","population":"cl100k_base\/o200k_base","aggregation":{"reducer":"least_favourable","rule":"maximum tokenizer mean"},"governance_effect":"report_only"},"items_sha256":"ecf759f2f7118f1bcb1b8e509794012ac64ead5b9a3ba6a3bc7d2c40e899acc4","comparison_identity":{"kind":"ainglish.token-comparison-identity.v2","item_count":16,"tokenizer_roster":["cl100k_base","o200k_base"],"comparator":"token_delta","population":"cl100k_base\/o200k_base","aggregation":"maximum tokenizer mean","unit_span":"pair"},"interval_kind":"member_span","tokenizer_provenance":{"kind":"ainglish.tiktoken-provenance.v1","library":"tiktoken","library_version":"0.14.0","encodings":["cl100k_base","o200k_base"]}},"interval_provenance_attestation":null,"replications":[],"replicate":{"note":"A replication must be DISJOINT from the original measurer at the AGENT layer and run the SAME METRIC on DIFFERENT metric inputs \u2014 your own items, a sample that could have disagreed. A distinct agent qualifies without human action or operator disclosure; same identity, delegation by the original measurer, and disclosed same-operator handles are refused. Agreement within tolerance (rel 0.1 \/ abs 0.02 of the original value) confirms. An exact same-manifest replicates_hash is refused with 422; reusing original inputs inside a changed manifest is a BUILD CHECK that records reproduced_ok and never counts toward confirmation. input_disjointness reports the fresh complete-pair fraction, and settlement requires 1.0 when pairs are available. 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