{"type":"post","slug":"a-rosetta-stone-for-ai-benchmarks","title":"A Rosetta Stone for AI benchmarks","description":"Epoch AI stitches saturating benchmarks into one scale with a statistical framework, because any single benchmark only separates models that are neither too bad nor too good.","retrieval_nugget":"Epoch AI stitches saturating benchmarks into one scale with a statistical framework, because any single benchmark only separates models that are neither too bad nor too good.","published_at":"2026-09-02","updated_at":"2026-09-12","record_date":"2026-08-25","date_kind":"discovered_at","topics":["agents","ai","evaluation"],"entities":["Epoch AI"],"source_url":"https://epoch.ai/publications/a-rosetta-stone-for-ai-benchmarks","source_title":"A Rosetta Stone for AI benchmarks","source_domain":"epoch.ai","source_terms":["Rosetta","Stone","benchmarks","benchmark","model"],"summary_word_count":190,"schema_version":"newruntime-agent-readable-v0.2","stable_id":"post:a-rosetta-stone-for-ai-benchmarks","status":"published","source_urls":["https://epoch.ai/publications/a-rosetta-stone-for-ai-benchmarks"],"visuals":[],"editorial_provenance":{"schema_version":"newruntime-editorial-copy-v1","content_status":"source_grounded_final","final_copy_sha256":"sha256:68d66b74548effc4c0a30164c14d164d17021acc9b37e3bf6f58882cdbf66c00","reviewed_at":"2026-09-12T10:00:00Z","source_evidence_count":1,"verified_claim_count":2,"site_analysis_schema_version":"newruntime-site-analysis-v1","site_object_kind":"field_note","observed_fact_count":2,"implication_count":1,"watch_condition_count":1,"related_record_count":3},"analysis":{"schema_version":"newruntime-site-analysis-v1","object_kind":"field_note","thesis":"Epoch AI published a paper proposing a statistical framework that stitches benchmarks together into a common scale, aimed at a structural problem: most benchmarks saturate too quickly to study long-run trends in AI capability.","observed_facts":[{"text":"The paper states that most benchmarks saturate too quickly to study long-run AI trends.","source_urls":["https://epoch.ai/publications/a-rosetta-stone-for-ai-benchmarks"]},{"text":"It proposes a statistical framework that stitches benchmarks together, with implications for algorithmic progress and forecasting.","source_urls":["https://epoch.ai/publications/a-rosetta-stone-for-ai-benchmarks"]}],"mechanism":"A benchmark therefore only separates models in its middle range, and since models improve quickly, each benchmark provides a usable signal for a short window before it stops measuring anything.","why_now":"A really bad model scores 0% on a benchmark — but so does an extremely bad one, so the benchmark cannot distinguish them.","implications":["A stitched scale inherits every weakness of the benchmarks it joins."],"evidence_boundary":"This is a paper with published source code rather than a settled method, and the stitched trend depends on modelling assumptions about how benchmarks overlap.","watch_conditions":["The condition to watch is whether independent groups reproduce the same long-run curve from different benchmark sets, because a scale that only one framework can compute is a forecast rather than a measurement."],"related_records":[{"url":"https://newruntime.com/posts/evals-move-from-leaderboards-to-operating-diagnostics","relation":"Prior coverage of evaluation as an operating diagnostic."},{"url":"https://newruntime.com/posts/deepmind-double-blind-frontier-model-evaluations","relation":"Prior coverage of evaluation integrity conditions."},{"url":"https://newruntime.com/posts/minimum-integrity-stack-agent-leaderboard","relation":"Prior coverage of the floor for quoting a leaderboard."}]},"routes":{"html":"https://newruntime.com/posts/a-rosetta-stone-for-ai-benchmarks/","markdown":"https://newruntime.com/posts/a-rosetta-stone-for-ai-benchmarks.md","json":"https://newruntime.com/posts/a-rosetta-stone-for-ai-benchmarks.json"},"editor":{"role":"editor","name":"Andrey Reshetnikov","profile":"https://newruntime.com/owner-profile.md","profile_json":"https://newruntime.com/owner-profile.json","same_as":["https://www.linkedin.com/in/reshetnikov1/","https://t.me/lapetuse"]},"next_reads":[{"type":"topic","path":"/topics/agents/","url":"https://newruntime.com/topics/agents/","title":"Agents","reason":"Explore the agents topic hub.","media_type":"text/html","markdown_url":"https://newruntime.com/topics/agents.md","json_url":"https://newruntime.com/topics/agents.json"},{"type":"topic","path":"/topics/ai/","url":"https://newruntime.com/topics/ai/","title":"Ai","reason":"Explore the ai topic 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