{"schema_version":"onlylabs.public_signal.v1","title":"Anthropic Repo: anthropics/original_performance_takehome","description":"Anthropic repo signal with public source context, captured evidence pages, related signals, and data-business radar classification.","url":"https://onlylabs.fyi/signals/68c7e2ad-4122-42f0-a2f0-cce82c850023","json_url":"https://onlylabs.fyi/signals/68c7e2ad-4122-42f0-a2f0-cce82c850023/signal.json","generated_at":"2026-06-11T03:02:46.953208+00:00","org":{"slug":"anthropic","name":"Anthropic","category":"frontier-lab","category_label":"Frontier lab","dossier_url":"https://onlylabs.fyi/labs/anthropic","dossier_json_url":"https://onlylabs.fyi/labs/anthropic/dossier.json"},"related_urls":{"signal":"https://onlylabs.fyi/signals/68c7e2ad-4122-42f0-a2f0-cce82c850023","signal_json":"https://onlylabs.fyi/signals/68c7e2ad-4122-42f0-a2f0-cce82c850023/signal.json","source":"https://github.com/anthropics/original_performance_takehome","lab_dossier":"https://onlylabs.fyi/labs/anthropic","lab_dossier_json":"https://onlylabs.fyi/labs/anthropic/dossier.json","analysis":"https://onlylabs.fyi/analysis/anthropic","analysis_json":"https://onlylabs.fyi/analysis/anthropic/analysis.json","analysis_evidence_json":"https://onlylabs.fyi/analysis/anthropic/evidence.json","category":"https://onlylabs.fyi/frontier","category_json":"https://onlylabs.fyi/frontier.json","category_feed":"https://onlylabs.fyi/frontier/feed.xml","category_signals_json":"https://onlylabs.fyi/signals.json","topic":null,"topic_signals_json":null,"topic_feed":null,"data_business":null},"answer_pack":{"answer":"Anthropic published anthropics/original_performance_takehome (Python). 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Language: Python Stars: 3892 Forks: 885 Open issues: 16 Created: 2026-01-19T19:16:04Z Pushed: 2026-01-22T01:11:08Z Default branch: main Fork: no Archived: no README: Anthropic's Original Performance Take-Home This repo contains a version of Anthropic's original performance take-home, before Claude Opus 4.5 started doing better than humans given only 2 hours. The original take-home was a 4-hour one that starts close to the contents of this repo, after Claude Opus 4 beat most humans at that, it was updated to a 2-hour one which started with code which achieved 18532 cycles (7.97x faster than this repo starts you). This repo is based on the newer take-home which has a few more instructions and comes with better debugging tools, but has the starter code reverted to the slowest baseline. After Claude Opus 4.5 we started using a different base for our time-limited take-homes. Now you can try to beat Claude Opus 4.5 given unlimited time! Performance benchmarks Measured in clock cycles from the simulated machine. All of these numbers are for models doing the 2 hour..."},"evidence_pages":[{"url":"https://github.com/anthropics/original_performance_takehome","final_url":"https://github.com/anthropics/original_performance_takehome","title":"anthropics/original_performance_takehome repository metadata","http_status":200,"content_type":"application/json","capture_method":"plain","fetched_at":"2026-06-11T03:02:46.953208+00:00","bytes":11852,"raw_path":"0eb3013ac274817c56355205705bc075d407d2320c51725a8b9b9e33608faa1c.json","content_hash":"cd94d00d940dab40480710d2a16cca669d4f14701ee2eb1e68c85f418f32a32d","excerpt_chars":1200,"truncated":true,"excerpt":"anthropics/original_performance_takehome Description: Anthropic's original performance take-home, now open for you to try! Language: Python Stars: 3892 Forks: 885 Open issues: 16 Created: 2026-01-19T19:16:04Z Pushed: 2026-01-22T01:11:08Z Default branch: main Fork: no Archived: no README: Anthropic's Original Performance Take-Home This repo contains a version of Anthropic's original performance take-home, before Claude Opus 4.5 started doing better than humans given only 2 hours. The original take-home was a 4-hour one that starts close to the contents of this repo, after Claude Opus 4 beat most humans at that, it was updated to a 2-hour one which started with code which achieved 18532 cycles (7.97x faster than this repo starts you). This repo is based on the newer take-home which has a few more instructions and comes with better debugging tools, but has the starter code reverted to the slowest baseline. After Claude Opus 4.5 we started using a different base for our time-limited take-homes. Now you can try to beat Claude Opus 4.5 given unlimited time! 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