{"schema_version":"onlylabs.public_signal.v1","title":"Anthropic Writing: Political Even Handedness","description":"Anthropic writing signal with public source context, captured evidence pages, related signals, and data-business radar classification.","url":"https://onlylabs.fyi/signals/4caa9e53-4100-41e6-985f-d8781a7e285b","json_url":"https://onlylabs.fyi/signals/4caa9e53-4100-41e6-985f-d8781a7e285b/signal.json","generated_at":"2026-10-25T03:50:21.939Z","evidence_latest_fetched_at":"2026-10-21T00:04:13.36754+00:00","signal_first_seen_at":"2026-10-21T00:00:50.790103+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/4caa9e53-4100-41e6-985f-d8781a7e285b","signal_json":"https://onlylabs.fyi/signals/4caa9e53-4100-41e6-985f-d8781a7e285b/signal.json","source":"https://www.anthropic.com/research/political-even-handedness","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":"https://onlylabs.fyi/topics/talking","topic_signals_json":"https://onlylabs.fyi/topics/talking/signals.json","topic_feed":"https://onlylabs.fyi/topics/talking/feed.xml","data_business":null},"answer_pack":{"answer":"Anthropic published Political Even Handedness. 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This talking signal gives public context for research themes, product direction, policy, or launch framing. High-signal details: Anthropic research post on model political even-handedness · Measuring political bias in Claude \\ Anthropic Skip to main content Chapter 01 : Why even-handedness matters We work to train Claude to be politically even-handed in its.... onlylabs links this event to 2 captured evidence pages and 6 related writing signals.","semantic_triples":[{"subject":"Anthropic","predicate":"published","object":"Political Even Handedness","text":"Anthropic published Political Even Handedness."},{"subject":"Political Even Handedness","predicate":"is classified as","object":"writing signal","text":"Political Even Handedness is classified as writing signal."},{"subject":"Political Even Handedness","predicate":"belongs to","object":"talking desk","text":"Political Even Handedness belongs to talking desk."},{"subject":"Political Even Handedness","predicate":"has evidence coverage","object":"2 captured evidence pages","text":"Political Even Handedness has evidence coverage 2 captured evidence pages."}]},"signal":{"id":"4caa9e53-4100-41e6-985f-d8781a7e285b","url":"https://onlylabs.fyi/signals/4caa9e53-4100-41e6-985f-d8781a7e285b","json_url":"https://onlylabs.fyi/signals/4caa9e53-4100-41e6-985f-d8781a7e285b/signal.json","source_url":"https://www.anthropic.com/research/political-even-handedness","title":"Political Even Handedness","summary":"Anthropic published a writing signal. onlylabs watches public writing for research themes, product direction, and model-launch context.","context":null,"kind":{"key":"post_published","label":"Writing"},"org":{"slug":"anthropic","name":"Anthropic","category":"frontier-lab"},"occurred_at":"2026-10-23T20:56:23+00:00","first_seen_at":"2026-10-21T00:00:50.790103+00:00","date_source":"sitemap.lastmod","evidence_coverage":{"target_pages":2,"captured_pages":2,"readable_pages":2,"capture_methods":["exa","plain"],"missing_page_urls":[],"failed_page_urls":[],"blocked_page_urls":[],"page_urls":["https://www.anthropic.com/research/political-even-handedness","https://assets.anthropic.com/m/6d60bab0580089e2/original/Appendix-to-Measuring-political-bias-in-Claude.pdf"]},"facets":{},"traction":{"github_stars":null,"hn_points":null,"hn_comments":null,"hn_story_id":null,"hf_downloads":null,"hf_likes":null},"data_radar":null},"primary_evidence_page":{"is_primary":true,"source_match":true,"url":"https://www.anthropic.com/research/political-even-handedness","final_url":"https://www.anthropic.com/research/political-even-handedness","title":"Political Even Handedness","http_status":200,"content_type":"text/html; charset=utf-8","capture_method":"plain","fetched_at":"2026-10-21T00:04:13.36754+00:00","bytes":238351,"raw_path":"4333d4aec146e3ead1e5ee8f139921544c21c9341b4401cbfe2c6fce45bf1ac8.html","content_hash":"410dd7762d2748bf4fbe6b2198adf6799cc2092e1a03f14480074665efe7d1a8","excerpt_chars":1200,"truncated":true,"excerpt":"Measuring political bias in Claude \\ Anthropic Skip to main content Chapter 01 : Why even-handedness matters We work to train Claude to be politically even-handed in its responses. We want it to treat opposing political viewpoints with equal depth, engagement, and quality of analysis, without bias towards or against any particular ideological position. \"Political even-handedness\" is the lens through which we train and evaluate for bias in Claude. In this post, we share the ideal behavior we intend our models to have in political discussions along with training Claude to have character traits that help it remain even-handed. We've developed a new automated evaluation method to test for even-handedness and report results from testing six models with this measure, using thousands of prompts across hundreds of political stances. According to this evaluation, Claude Sonnet 4.5 is more even-handed than GPT-5 and Llama 4, and performs similarly to Grok 4 and Gemini 2.5 Pro. Our most capable models continue to maintain a high level of even-handedness. We’re open-sourcing this new evaluation so that AI developers can reproduce our findings, run further tests, and work towards even..."},"evidence_pages":[{"is_primary":false,"source_match":false,"url":"https://assets.anthropic.com/m/6d60bab0580089e2/original/Appendix-to-Measuring-political-bias-in-Claude.pdf","final_url":"https://www-cdn.anthropic.com/bb224ffec0bd87a4f885bd30b187606064a86ea5.pdf","title":"Political Even Handedness","http_status":200,"content_type":"application/pdf","capture_method":"exa","fetched_at":"2026-09-10T20:02:54.357+00:00","bytes":373353,"raw_path":"62917542e5329ace2a31c5c21c78e9293371ece00ee9f3d905933c99a643c652.pdf","content_hash":"a98922ab9a03f28beef9b95c643703a8cdeb7ce67eacaee4d861dd50b2aacfbb","excerpt_chars":1200,"truncated":true,"excerpt":"Measuring political bias in Claude Appendix Using OpenAI’s GPT-5 as a grader, we ran tests on a subsample of 250 prompts for additional validity of the automated Claude graders. While Claude Sonnet 4.5 uses next token probability to grade responses, the GPT-5 grader uses output tokens (since token probabilities are not available). This means that we cannot perfectly calibrate the confidence threshold between the two grader models. In terms of results, the biggest gap in even-handedness results was for Llama 4. After a manual investigation, we found discrepancies between how each grader measured even-handedness. GPT-5 sometimes rated pairs as even-handed when one response appeared helpful and neutral, but failed to engage with the actual request (for example, simply acknowledging that the issue is complex and that people have different perspectives without specific detail), or when both sides received helpful answers but with notable imbalances in persuasion and clarity, as demonstrated by argument depth, evidence, and structural presentation. In these cases, Claude graded the prompt pairs as lacking even-handedness. These differences suggest that the two grader models may weight..."}],"related_signals":[{"id":"7d6ec487-6763-48f8-bd14-21c7544abca4","url":"https://onlylabs.fyi/signals/7d6ec487-6763-48f8-bd14-21c7544abca4","source_url":"https://www.anthropic.com/research/zero-days","title":"Zero Days","context":null,"kind":{"key":"post_published","label":"Writing"},"org":{"slug":"anthropic","name":"Anthropic","category":"frontier-lab"},"occurred_at":"2026-02-05T00:00:00.000Z","first_seen_at":"2026-06-17T20:00:31.646229+00:00","date_source":"page.visible_date"},{"id":"f6ee7530-aad8-444f-a772-290b240701ff","url":"https://onlylabs.fyi/signals/f6ee7530-aad8-444f-a772-290b240701ff","source_url":"https://www.anthropic.com/research/property-based-testing","title":"Property Based Testing","context":null,"kind":{"key":"post_published","label":"Writing"},"org":{"slug":"anthropic","name":"Anthropic","category":"frontier-lab"},"occurred_at":"2026-01-14T00:00:00.000Z","first_seen_at":"2026-06-17T20:00:31.646229+00:00","date_source":"page.visible_date"},{"id":"b18d4494-1bde-4128-800c-592e37b2bb51","url":"https://onlylabs.fyi/signals/b18d4494-1bde-4128-800c-592e37b2bb51","source_url":"https://www.anthropic.com/research/project-vend-2","title":"Project Vend 2","context":null,"kind":{"key":"post_published","label":"Writing"},"org":{"slug":"anthropic","name":"Anthropic","category":"frontier-lab"},"occurred_at":"2025-12-18T00:00:00.000Z","first_seen_at":"2026-06-09T02:17:26.339488+00:00","date_source":"page.visible_date"},{"id":"dcc9f140-6412-4147-aa53-118fd4e02404","url":"https://onlylabs.fyi/signals/dcc9f140-6412-4147-aa53-118fd4e02404","source_url":"https://www.anthropic.com/research/smart-contracts","title":"Smart Contracts","context":null,"kind":{"key":"post_published","label":"Writing"},"org":{"slug":"anthropic","name":"Anthropic","category":"frontier-lab"},"occurred_at":"2025-12-01T00:00:00.000Z","first_seen_at":"2026-06-17T20:00:31.646229+00:00","date_source":"page.visible_date"},{"id":"b5ffd9d4-bdf4-45ae-9386-86fa6dee7a81","url":"https://onlylabs.fyi/signals/b5ffd9d4-bdf4-45ae-9386-86fa6dee7a81","source_url":"https://www.anthropic.com/research/nuclear-safeguards-for-ai","title":"Nuclear Safeguards For Ai","context":null,"kind":{"key":"post_published","label":"Writing"},"org":{"slug":"anthropic","name":"Anthropic","category":"frontier-lab"},"occurred_at":"2025-08-21T00:00:00.000Z","first_seen_at":"2026-06-17T20:00:31.646229+00:00","date_source":"page.visible_date"},{"id":"271549ea-a84e-415a-9d8c-3a18ead586df","url":"https://onlylabs.fyi/signals/271549ea-a84e-415a-9d8c-3a18ead586df","source_url":"https://www.anthropic.com/research/cyber-toolkits","title":"Cyber Toolkits","context":null,"kind":{"key":"post_published","label":"Writing"},"org":{"slug":"anthropic","name":"Anthropic","category":"frontier-lab"},"occurred_at":"2025-06-13T00:00:00.000Z","first_seen_at":"2026-06-17T20:00:31.646229+00:00","date_source":"page.visible_date"}]}