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This talking signal gives public context for research themes, product direction, policy, or launch framing. High-signal details: Substantive technical post on testing methodology by leading AI lab. · Finding bugs with Claude and property-based testing \\ Anthropic Frontier Red Team Finding bugs across the Python ecosystem with Claude and property-based testing Jan 14,.... onlylabs links this event to 1 captured evidence page and 6 related writing signals. 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This talking signal gives public context for research themes, product direction, policy, or launch framing. High-signal details: Substantive technical post on testing methodology by leading AI lab. · Finding bugs with Claude and property-based testing \\ Anthropic Frontier Red Team Finding bugs across the Python ecosystem with Claude and property-based testing Jan 14,.... onlylabs links this event to 1 captured evidence page and 6 related writing signals. 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To do this, our agent infers general properties of code that should be true, and then by applying property-based testing—a technique similar to fuzz testing—we are able to discover bugs in top Python packages like NumPy, SciPy, and Pandas. After extensive manual validation, we are in the process of reporting these bugs to the developers, several of which have already been patched. For more information, read the full paper , take a look at the GitHub repository , or browse the bugs we found at our site . Introduction Ensuring that programs are bug-free is one of the most challenging aspects of software engineering. Bugs frequently continue to lurk despite the developer’s best effort. The most common approach to testing code is with example-based tests : the developer writes out a specific example..."},"evidence_pages":[],"related_signals":[{"id":"9caf7d39-0d96-42d0-8b59-e72f7e502ec4","url":"https://onlylabs.fyi/signals/9caf7d39-0d96-42d0-8b59-e72f7e502ec4","source_url":"https://www.anthropic.com/research/economic-index-june-2026-report","title":"Economic Index June 2026 Report","context":null,"kind":{"key":"post_published","label":"Writing"},"org":{"slug":"anthropic","name":"Anthropic","category":"frontier-lab"},"occurred_at":"2026-06-26T15:40:57+00:00","first_seen_at":"2026-06-26T16:00:32.297045+00:00","date_source":"sitemap.lastmod"},{"id":"6c78c028-3ab4-4b33-86f7-d86c8ba9e3ba","url":"https://onlylabs.fyi/signals/6c78c028-3ab4-4b33-86f7-d86c8ba9e3ba","source_url":"https://www.anthropic.com/research/agents-in-biology","title":"Agents In Biology","context":null,"kind":{"key":"post_published","label":"Writing"},"org":{"slug":"anthropic","name":"Anthropic","category":"frontier-lab"},"occurred_at":"2026-06-08T00:00:00.000Z","first_seen_at":"2026-06-09T02:17:26.339488+00:00","date_source":"page.visible_date"},{"id":"e4fbfcdd-15b4-41b9-b011-fd83e7068ae9","url":"https://onlylabs.fyi/signals/e4fbfcdd-15b4-41b9-b011-fd83e7068ae9","source_url":"https://www.anthropic.com/research/making-claude-a-chemist","title":"Making Claude A Chemist","context":null,"kind":{"key":"post_published","label":"Writing"},"org":{"slug":"anthropic","name":"Anthropic","category":"frontier-lab"},"occurred_at":"2026-06-05T00:00:00.000Z","first_seen_at":"2026-06-09T02:17:26.339488+00:00","date_source":"page.visible_date"},{"id":"b8472bfd-c32b-4d72-ae98-d8a4f1a1278f","url":"https://onlylabs.fyi/signals/b8472bfd-c32b-4d72-ae98-d8a4f1a1278f","source_url":"https://www.anthropic.com/research/exploit","title":"Exploit","context":null,"kind":{"key":"post_published","label":"Writing"},"org":{"slug":"anthropic","name":"Anthropic","category":"frontier-lab"},"occurred_at":"2026-03-06T00:00:00.000Z","first_seen_at":"2026-06-17T20:00:31.646229+00:00","date_source":"page.visible_date"},{"id":"5f0f346c-0718-4d81-a174-d18cae51efa3","url":"https://onlylabs.fyi/signals/5f0f346c-0718-4d81-a174-d18cae51efa3","source_url":"https://www.anthropic.com/research/critical-infrastructure-defense","title":"Critical Infrastructure Defense","context":null,"kind":{"key":"post_published","label":"Writing"},"org":{"slug":"anthropic","name":"Anthropic","category":"frontier-lab"},"occurred_at":"2026-01-08T00:00:00.000Z","first_seen_at":"2026-06-17T20:00:31.646229+00:00","date_source":"page.visible_date"},{"id":"b8ad5d26-1905-4d23-a2e0-c2c477cbb462","url":"https://onlylabs.fyi/signals/b8ad5d26-1905-4d23-a2e0-c2c477cbb462","source_url":"https://www.anthropic.com/news/core-views-on-ai-safety","title":"Core Views On Ai Safety","context":null,"kind":{"key":"post_published","label":"Writing"},"org":{"slug":"anthropic","name":"Anthropic","category":"frontier-lab"},"occurred_at":"2023-03-08T00:00:00.000Z","first_seen_at":"2026-06-09T02:17:26.339488+00:00","date_source":"page.visible_date"}]}