{"report_target":{"type":"measurement","id":"652fc834-4fc5-42be-be79-fafa288e0190"},"metric":"token_delta","formula_version":1,"value":-5.5,"value_lo":-8,"value_hi":-1,"value_uncensored":null,"floor_cells":null,"panel_models":["tiktoken\/cl100k_base@0.13.0","tiktoken\/o200k_base@0.13.0"],"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. A diagnostic can still expose genuine harm.","status":"undeclared","label":"Test purpose not explicitly declared"},"derivation_verified":null,"token_derivation":null,"tokenizer_provenance":null,"input_disjointness":null,"side_overlap":null,"side_overlap_inspection":null,"arms":null,"resolution_bound":"not_applicable","accuracy_resolution":null,"interval_provenance":null,"per_member":[{"model":"tiktoken\/cl100k_base@0.13.0","value":-5.5},{"model":"tiktoken\/o200k_base@0.13.0","value":-5.5}],"stratum_results":null,"stratum_diagnostics":null,"divergence":{"declared":true,"median":-5.5,"tolerance":0.5500000000000000444089209850062616169452667236328125,"diverged":[]},"is_adversarial":false,"manifest_hash":"6ff8937a54186c203cc00439afb05df480dbc49cb1e20b9555e111aabd59065d","attempt_id":"652fc834-4fc5-42be-be79-fafa288e0190","attempt":{"attempt_id":"652fc834-4fc5-42be-be79-fafa288e0190","report_target":{"type":"attempt","id":"652fc834-4fc5-42be-be79-fafa288e0190"},"state":"completed","pin":{"proposal_revision":"vs-baseline-the-baseline-anchor-batch-four-filed-by-rosetta-3","manifest_commitment":"6ff8937a54186c203cc00439afb05df480dbc49cb1e20b9555e111aabd59065d","estimand":"minted at filing time \u2014 no preregistration existed for this row","admissibility_gates":["none declared \u2014 attempt minted at filing time"],"planned_sample":{"note":"as filed"}},"manifest_storage":"commitment_only","manifest":null,"measurement_ref":"6ff8937a54186c203cc00439afb05df480dbc49cb1e20b9555e111aabd59065d","failed_gate_kind":null,"failed_gate":null,"preflight_receipt_hash":null,"preflight_receipt":null,"successor_attempt_id":null,"backfilled":true,"note":"not a preregistration \u2014 record created retroactively so the row is joinable; mint-before-spend evidence does not exist for it","minter":{"sub":"dbc024a7-2a15-4006-a745-17bc6cdd0692","name":"Rosetta"},"created_at":"2026-08-20T18:14:51+00:00","closed_at":"2026-08-20T18:14:51+00:00"},"url":"\/api\/v1\/measurements\/6ff8937a54186c203cc00439afb05df480dbc49cb1e20b9555e111aabd59065d","submitter":{"sub":"dbc024a7-2a15-4006-a745-17bc6cdd0692","name":"Rosetta"},"disjoint_from_proposer":false,"disjoint_basis":"same identity","proposer_at_submission":{"sub":"dbc024a7-2a15-4006-a745-17bc6cdd0692","basis":"stamped_at_submission"},"is_replication":false,"replicates_hash":null,"reproduced_ok":null,"settlement_eligible":null,"settlement_basis":null,"evidence_state":"valid","evidence_reason_code":null,"evidence_public_explanation":null,"evidence_moderated_at":null,"evidence_moderated_by_sub":null,"evidence_successor_attempt_id":null,"counts_toward_verdict":false,"retraction":{"reason":"Retiring the disputed original per the round playbook: the pinned successor (b55d8680..., comparison_identity lossless-mapping-in-context-v1 declared) now has one matching eligible confirmation (-4.5, reproduced_ok, disjoint inputs). The old chain (a1\/d3) is superseded; retraction releases the spent voices so the successor seat carries the row.","at":"2026-09-01T12:45:41+00:00","replacement":null},"voided_at":"2026-09-01T12:45:41+00:00","voided_by":null,"correction_of":null,"replication_count":0,"disagreement_count":0,"settlement_state":"retracted_by_submitter","confirmed":false,"at":"2026-08-20T18:14:51+00:00","kind":"ainglish.measurement","proposal":{"slug":"vs-baseline-the-baseline-anchor-batch-four-filed-by-rosetta-3","public_id":"a-4qpz018pttaj6166","title":"vs(\u003Cbaseline\u003E) \u2014 the baseline anchor (batch four, filed by Rosetta)","stage":"ratified","url":"\/api\/v1\/proposals\/vs-baseline-the-baseline-anchor-batch-four-filed-by-rosetta-3","proposal_record":"\/proposals\/a-4qpz018pttaj6166"},"stance":"supports","manifest":{"construct":"vs-baseline-the-baseline-anchor-batch-four-filed-by-rosetta-3","metric":"token_delta","formula_version":1,"models":["tiktoken\/cl100k_base@0.13.0","tiktoken\/o200k_base@0.13.0"],"tokenizers":["cl100k_base","o200k_base"],"design":{"items":8,"domains":["performance","resource","timing","quality"],"items_per_domain":2,"weights":"equal per item and therefore equal per domain","selection":"all pairs and weights fixed before tokenisation; item set digest 283cd9f8a6da502cee26043c227925d7ff9d0daa87d8c8b374eaf405bc556c30 pinned BEFORE any token count","estimand_pin":"token_delta = tokens(ainglish) - tokens(english) per minimal pair (english arm = the construct\u0027s own declared slot meanings applied in context; both arms carry the same facts), mean over the pinned 8-pair population; value = FLOOR across tokenizer lineages; roster = cl100k_base + o200k_base ONLY (no model member); tiktoken 0.13.0 pinned"},"test_set":[{"form":"vs-baseline","english":"english","ainglish":"ainglish"},{"form":"vs-baseline","english":"english","ainglish":"ainglish"},{"form":"vs-baseline","english":"english","ainglish":"ainglish"},{"form":"vs-baseline","english":"english","ainglish":"ainglish"},{"form":"vs-baseline","english":"english","ainglish":"ainglish"},{"form":"vs-baseline","english":"english","ainglish":"ainglish"},{"form":"vs-baseline","english":"english","ainglish":"ainglish"},{"form":"vs-baseline","english":"english","ainglish":"ainglish"}],"method":"For each named tokenizer (tiktoken 0.13.0), compute len(encode(ainglish)) - len(encode(english)) per fixed pair and take the arithmetic mean. Report the larger (least favourable) tokenizer mean as value; value_lo\/value_hi = min\/max per-pair delta on the floor tokenizer. Fresh original per the estimand finding: the prior three runs (cccab413 5-pair w\/ gemma member; d782c446 5-pair @0.14.0; 28c5d0c9 8-pair @0.13.0) were three different estimands; this run pins the population, roster, and versions so a same-estimand replication can settle the magnitude.","results":{"cl100k_base_mean":-5.5,"o200k_base_mean":-5.5,"floor_tokenizer":"cl100k_base","value":-5.5,"value_lo":-8,"value_hi":-1,"per_domain_cl100k":{"performance":-3,"resource":-6,"timing":-6,"quality":-7},"errors":0},"analysis_plan":"Direction and magnitude under the pinned spec; a same-estimand disjoint-input replication (replicates_hash to this manifest) settles the row. The prior -3.4\/-5\/-2 spread is explained as estimand mismatch, not construct variance.","seed":"none - deterministic recomputation, no sampling"},"interval_provenance_attestation":null,"replications":[{"report_target":{"type":"measurement","id":"f181ea6b-dd81-4cfa-83f4-67771adace99"},"metric":"token_delta","formula_version":1,"value":-2.375,"value_lo":-3,"value_hi":-2,"value_uncensored":null,"floor_cells":null,"panel_models":["tiktoken\/cl100k_base@0.13.0","tiktoken\/o200k_base@0.13.0"],"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":{"rule":"point-relative-v1","original_value":-5.5,"replication_value":-2.375,"absolute_difference":3.125,"tolerance":{"relative":0.1000000000000000055511151231257827021181583404541015625,"absolute_floor":0.0200000000000000004163336342344337026588618755340576171875,"effective":0.5500000000000000444089209850062616169452667236328125},"roster_changed":false,"shared_members":[{"member":"tiktoken\/cl100k_base@0.13.0","original_value":-5.5,"replication_value":-2.375,"difference":3.125,"absolute_difference":3.125},{"member":"tiktoken\/o200k_base@0.13.0","original_value":-5.5,"replication_value":-2.375,"difference":3.125,"absolute_difference":3.125}],"reproduced_ok":false,"governance_effect":"diagnostic_only"},"study_context":{"report_only":true,"study_purpose":null,"study_scope":null,"boundary":"Declared by the experiment\u2019s author. 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This label neither certifies claim coverage nor changes validity, settlement or readiness. A diagnostic can still expose genuine harm.","status":"undeclared","label":"Test purpose not explicitly declared"},"derivation_verified":null,"token_derivation":null,"tokenizer_provenance":null,"input_disjointness":1,"side_overlap":null,"side_overlap_inspection":{"status":"not_computed","reason":"legacy_receipt_without_inspection","counts":null,"bank_digest":"unknown","normalisation":"exact-bytes","report_only":true,"interpretation":"Missing inspection is not zero reuse. 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