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Max Schwarzer wrote in his post on X of 3 March 2026 that he would join Anthropic to return to research in reinforcement learning; exchange4media reported this on 5 March 2026. Copy claim link
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Machine-checked Stated in source Supported
Supporting evidence: primary + secondary · 2 sources; Context: primary · 1 source
Date 2026-03-03 · snapshot Records dated 2026 → Activity stage announced Role not stated in his post Scope and limits Announced in his own post, which gives no title and no start date. The part of the post about Anthropic was read in full on X by a cross-family check; the admission’s retrieval (X’s syndication endpoint) ends before it. The title in the report’s subheading is not recorded.
The evidence 03 primary source Supports the claim
Max Schwarzer post on X, 3 March 2026 ↗ X · 2026-03-03
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Paraphrase Schwarzer writes that he is joining Anthropic to get back into research in reinforcement learning.
Location in source Full note, paragraph beginning “I’m personally very excited”
Machine-checked · 2026-10-31
Source details and check notes Authors Max Schwarzer Version Dated post, retrieved on 2026-10-29 (SHA-256 d43a491603eeceab89353848c925a47785a36798d44197516a70396506555432) through X’s own syndication endpoint for the post’s text, which truncates long notes. Canonical address Open the canonical source ↗ Accessed 2026-10-29 Language English (en) Attribution Max Schwarzer, “Max Schwarzer post on X, 3 March 2026”, 2026-03-03. 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 Added at the admission of the lab genealogy 2 pack (research/lab-genealogy-2) from a text the cross-family check of 2026-10-31 located. The paraphrase is Selekoa’s. Read in full on X by the cross-family check of 2026-10-31; X’s syndication endpoint, which the research pack and the admission could reach, ends before this part of the note, so the passage is paraphrased and not matched again. No human editorial review. secondary source Supports the claim
OpenAI’s VP of Research Max Schwarzer joins Anthropic ↗ exchange4media · 2026-03-05
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Source excerpt “I'm proud to be joining AnthropicAI to get back into the weeds in RL research” Location in source Article, quotation of the post
How it was read Read through a reader relay (r.jina.ai): a third-party rendering of the publisher’s current page, not an archive copy
Machine-checked · 2026-10-29
Source details and check notes Authors e4m Desk Version Dated page, retrieved on 2026-10-29 (SHA-256 f8358409f65ed72239a918f15f8a234b39bfa5a9d113e686f6e209c48738f43a) through the third-party reader relay r.jina.ai, which renders the publisher’s current page (the publisher refused direct retrieval); not an archive copy. Canonical address Open the canonical source ↗ Accessed 2026-10-29 Language English (en) Attribution e4m Desk, “OpenAI’s VP of Research Max Schwarzer joins Anthropic”, 2026-03-05. 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, lab genealogy 2 (research/lab-genealogy-2). The quotation (15 words) matched the retrieved text on 2026-10-29 and again in a fresh retrieval. Read through the third-party reader relay r.jina.ai, which renders the publisher’s current page (the publisher refused direct retrieval); not an archive copy. Matching ignored differences of whitespace, case, quotation marks, apostrophes, dashes and Unicode compatibility forms, so the source’s typography can differ. A cross-family machine check (2026-10-31, item L170) re-read the record’s sources. No human editorial review. primary source Context only
Max Schwarzer post on X, 3 March 2026 ↗ X · 2026-03-03
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Paraphrase Schwarzer writes that he has decided to leave OpenAI; the retrieved text ends before the part about Anthropic that the report quotes.
Location in source Post text, first sentence (post dated 2026-03-03T21:02:45Z)
How it was read Post text read through X’s syndication endpoint, which can truncate long notes
Machine-checked · 2026-10-29
Source details and check notes Authors Max Schwarzer Version Dated post, retrieved on 2026-10-29 (SHA-256 d43a491603eeceab89353848c925a47785a36798d44197516a70396506555432) through X’s own syndication endpoint for the post’s text, which truncates long notes. Canonical address Open the canonical source ↗ Accessed 2026-10-29 Language English (en) Attribution Max Schwarzer, “Max Schwarzer post on X, 3 March 2026”, 2026-03-03. 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, lab genealogy 2 (research/lab-genealogy-2). The paraphrase’s verbatim anchor “leave OpenAI” matched the retrieved text on 2026-10-29 and again in a fresh retrieval. Read through X’s own syndication endpoint for the post’s text, which truncates long notes. Matching ignored differences of whitespace, case, quotation marks, apostrophes, dashes and Unicode compatibility forms, so the source’s typography can differ. The paraphrase is Selekoa’s; only the anchor is the source’s wording. A cross-family machine check (2026-10-31, item L170) re-read the record’s sources. No human editorial review. Status and meaning Editorial status. Machine-checked . Machines found this record and checked it against its sources; no person accepted it individually. Each evidence record above shows how it was checked.
Relation. An institutional role with explicitly scoped time: snapshot, sourced interval, or unknown dates. No continuing appointment is implied.
Date. Date of Schwarzer’s X post (3 March 2026, 21:02 UTC) as retrieved through X’s syndication endpoint, which truncates the post before the part exchange4media quotes; not a start date.
Record ID lg2-oa-schwarzer-anthropic-2026