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U.S. AI Safety Institute documented evaluation engagement with ↓ Anthropic
On 25 September 2025 NIST stated that CAISI had worked with Anthropic to identify security issues with its advanced AI systems, with research and evaluations completed in partnership with the UK AI Security Institute. Copy claim link
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Machine-checked, not reviewed by an editor Stated in source Supported
Supporting evidence: primary · 1 source
Date 2025-09-25 · announcement Activity stage reported performed Evaluated system Anthropic's advanced AI systems (not named) Activity scope Identifying security issues and improving the measurement of AI security, in partnership with the UK AI Security Institute (as reported by NIST) Scope and limits NIST's statement only; the dates of the work are not given. The company's blog post it cites was not inspected; no finding, fix or compliance is recorded. Whether the 2024 agreement was renewed or renegotiated is not stated on the page. The same statement concerns OpenAI (recorded separately).
The evidence 01 primary source Supports the claim
CAISI Works with OpenAI and Anthropic to Promote Secure AI Innovation (September 25, 2025) ↗ National Institute of Standards and Technology · 2025-09-25
Archived copy, captured 2025-09-26: CAISI Works with OpenAI and Anthropic to Promote Secure AI Innovation (September 25, 2025) ↗
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Source excerpt “CAISI worked with OpenAI and Anthropic to identify security issues with their advanced AI systems” Location in source News page, second paragraph
How it was read Retrieved directly from the publisher
Machine-checked · 2026-10-28
Source details and check notes Authors National Institute of Standards and Technology (Center for AI Standards and Innovation) Version Retrieved on 2026-10-27 (SHA-256 52ed93923fd4fa2cd05cc77136601f1d09680e63196801d7b633581016704231). The cross-family check of 2026-10-28 opened the Internet Archive capture linked here and matched the quoted wording in it, the release-period expression (decision 9); a capture shows only what the archive retrieved that day. Its wording can change; earlier wording is not authenticated. Canonical address Open the canonical source ↗ Accessed 2026-10-27 Language English (en) Archive copy Open archived copy, captured 2025-09-26: CAISI Works with OpenAI and Anthropic to Promote Secure AI Innovation (September 25, 2025) ↗ . Captured 1 day after the recorded publication date. An archive copy shows only what the archive retrieved on 2025-09-26. It does not prove what the page said earlier, and it can differ from the copy checked on 2026-10-27.Attribution National Institute of Standards and Technology (Center for AI Standards and Innovation), “CAISI Works with OpenAI and Anthropic to Promote Secure AI Innovation (September 25, 2025)”, 2025-09-25. Reuse No open redistribution licence asserted. Bibliographic metadata, editorial paraphrases and short attributed quotations (at most 50 words each). Recheck terms before wider redistribution. Check notes Candidate pack passage, frameworks to law (research/frameworks-to-law). The quotation (15 words) matched the text retrieved for the candidate pack on 2026-10-27 and again at admission on 2026-10-28, in a fresh retrieval of the same address (the page’s bytes had changed). Read directly from www.nist.gov. Matching ignored differences of whitespace, case, quotation marks, dashes and Unicode compatibility forms, so the source’s typography can differ. A cross-family machine check (2026-10-28, item 45) answered the record’s question blind from fresh retrievals and agreed with the record. No human editorial review. Status and meaning Editorial status. Not reviewed by an editor . An exploratory record that no editor has accepted. This status does not say whether a person has read any linked passage. Each evidence record above shows how it was checked.
Relation. An evaluator’s explicitly documented, system-specific engagement with a developer. Proposed, announced and reported performed work are distinct activity stages. Reported performance does not independently verify execution, effectiveness or certification.
Date. Date of the announcement, as the source gives it.
Record ID fl-us-caisi-security-work-anthropic