{"schema_version":"onlylabs.public_signal.v1","title":"Anthropic Writing: Claude 3 5 Sonnet","description":"Anthropic writing signal with public source context, captured evidence pages, related signals, and data-business radar classification.","url":"https://onlylabs.fyi/signals/ec6a68b4-19ad-4479-ada5-57f10e876582","json_url":"https://onlylabs.fyi/signals/ec6a68b4-19ad-4479-ada5-57f10e876582/signal.json","generated_at":"2026-06-11T04:16:07.436953+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/ec6a68b4-19ad-4479-ada5-57f10e876582","signal_json":"https://onlylabs.fyi/signals/ec6a68b4-19ad-4479-ada5-57f10e876582/signal.json","source":"https://www.anthropic.com/news/claude-3-5-sonnet","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 Claude 3 5 Sonnet. This talking signal gives public context for research themes, product direction, policy, or launch framing. High-signal details: Introducing Claude 3.5 Sonnet \\ Anthropic Announcements Claude 3.5 Sonnet Jun 21, 2024 Try on Claude.ai Update Consumer Terms and Privacy Policy Aug 28, 2025 Today,.... onlylabs links this event to 1 captured evidence page and 6 related writing signals.","signal_desk":"talking","source_context":{"source_url":"https://www.anthropic.com/news/claude-3-5-sonnet","source_host":"anthropic.com","occurred_at":"2024-06-21T00:00:00.000Z","first_seen_at":"2026-06-09T02:17:26.339488+00:00","date_source":"page.visible_date","context":null},"context_markers":[{"label":"Lab","value":"Anthropic","source":"signal"},{"label":"Signal desk","value":"talking","source":"signal"},{"label":"Source host","value":"anthropic.com","source":"source"},{"label":"Watch term","value":"Eval methodology","source":"evidence"},{"label":"Watch term","value":"Model card","source":"model"},{"label":"Watch term","value":"Safety and alignment","source":"evidence"},{"label":"Watch term","value":"Agents and 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public writing and discussion into a readable map of research themes, product framing, policy posture, launch narratives, and market attention.","evidence_focus":["post title","source URL","captured page text","HN traction","linked model or paper references","publication date"],"extraction_questions":["Which themes are labs choosing to explain publicly?","Which posts are attracting outside discussion?","Which writing reframes a recent release, model, hiring wave, or policy stance?","Which posts mention data, evals, infrastructure, safety, or deployment workflows?"],"signal_questions":["What public theme, launch framing, or research direction does this writing signal expose?","Which themes are labs choosing to explain publicly?","Which posts are attracting outside discussion?","Do the 6 related writing signals show a repeated pattern?"],"output_fields":["org","theme","public_framing","traction","data_business_lane","evidence_url"],"data_business_relevance":"Public writing supplies the narrative layer over raw signals and helps identify which frontier-lab priorities are becoming externally legible.","required_sources":[{"label":"signal_json","url":"https://onlylabs.fyi/signals/ec6a68b4-19ad-4479-ada5-57f10e876582/signal.json","required":true},{"label":"source","url":"https://www.anthropic.com/news/claude-3-5-sonnet","required":true},{"label":"dossier_json","url":"https://onlylabs.fyi/labs/anthropic/dossier.json","required":true},{"label":"analysis_evidence_json","url":"https://onlylabs.fyi/analysis/anthropic/evidence.json","required":true},{"label":"topic_signals_json","url":"https://onlylabs.fyi/topics/talking/signals.json","required":false},{"label":"data_radar_json","url":null,"required":false}],"expected_output":["one-paragraph source-grounded interpretation","category-specific implication","confidence and missing evidence","recommended next source to inspect"],"prompt_seed":"Using only the linked onlylabs JSON, captured source context, and cited evidence, 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This talking signal gives public context for research themes, product direction, policy, or launch framing. High-signal details: Introducing Claude 3.5 Sonnet \\ Anthropic Announcements Claude 3.5 Sonnet Jun 21, 2024 Try on Claude.ai Update Consumer Terms and Privacy Policy Aug 28, 2025 Today,.... onlylabs links this event to 1 captured evidence page and 6 related writing signals.","semantic_triples":[{"subject":"Anthropic","predicate":"published","object":"Claude 3 5 Sonnet","text":"Anthropic published Claude 3 5 Sonnet."},{"subject":"Claude 3 5 Sonnet","predicate":"is classified as","object":"writing signal","text":"Claude 3 5 Sonnet is classified as writing signal."},{"subject":"Claude 3 5 Sonnet","predicate":"belongs to","object":"talking desk","text":"Claude 3 5 Sonnet belongs to talking desk."},{"subject":"Claude 3 5 Sonnet","predicate":"has evidence coverage","object":"1 captured evidence page","text":"Claude 3 5 Sonnet has evidence coverage 1 captured evidence page."}]},"signal":{"id":"ec6a68b4-19ad-4479-ada5-57f10e876582","url":"https://onlylabs.fyi/signals/ec6a68b4-19ad-4479-ada5-57f10e876582","json_url":"https://onlylabs.fyi/signals/ec6a68b4-19ad-4479-ada5-57f10e876582/signal.json","source_url":"https://www.anthropic.com/news/claude-3-5-sonnet","title":"Claude 3 5 Sonnet","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":"2024-06-21T00:00:00.000Z","first_seen_at":"2026-06-09T02:17:26.339488+00:00","date_source":"page.visible_date","evidence_coverage":{"target_pages":1,"captured_pages":1,"readable_pages":1,"capture_methods":["plain"],"missing_page_urls":[],"failed_page_urls":[],"blocked_page_urls":[],"page_urls":["https://www.anthropic.com/news/claude-3-5-sonnet"]},"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":{"url":"https://www.anthropic.com/news/claude-3-5-sonnet","final_url":"https://www.anthropic.com/news/claude-3-5-sonnet","title":"Claude 3 5 Sonnet","http_status":200,"content_type":"text/html; charset=utf-8","capture_method":"plain","fetched_at":"2026-06-11T04:16:07.436953+00:00","bytes":133350,"raw_path":"e91e6f80eaaceb584f2332495ca16ab2902c8d464dba8ec097851744dfe1e764.html","content_hash":"ffef9e7828b9b55ea11bd3f989d367f0417201fef9324d82b8b6c67394b85385","excerpt_chars":1200,"truncated":true,"excerpt":"Introducing Claude 3.5 Sonnet \\ Anthropic Announcements Claude 3.5 Sonnet Jun 21, 2024 Try on Claude.ai Update Consumer Terms and Privacy Policy Aug 28, 2025 Today, we’re launching Claude 3.5 Sonnet—our first release in the forthcoming Claude 3.5 model family. Claude 3.5 Sonnet raises the industry bar for intelligence, outperforming competitor models and Claude 3 Opus on a wide range of evaluations, with the speed and cost of our mid-tier model, Claude 3 Sonnet. Claude 3.5 Sonnet is now available for free on Claude.ai and the Claude iOS app, while Claude Pro and Team plan subscribers can access it with significantly higher rate limits. It is also available via the Anthropic API , Amazon Bedrock , and Google Cloud’s Vertex AI . The model costs $3 per million input tokens and $15 per million output tokens, with a 200K token context window. Frontier intelligence at 2x the speed Claude 3.5 Sonnet sets new industry benchmarks for graduate-level reasoning (GPQA), undergraduate-level knowledge (MMLU), and coding proficiency (HumanEval). It shows marked improvement in grasping nuance, humor, and complex instructions, and is exceptional at writing high-quality content with a natural,..."},"evidence_pages":[{"url":"https://www.anthropic.com/news/claude-3-5-sonnet","final_url":"https://www.anthropic.com/news/claude-3-5-sonnet","title":"Claude 3 5 Sonnet","http_status":200,"content_type":"text/html; charset=utf-8","capture_method":"plain","fetched_at":"2026-06-11T04:16:07.436953+00:00","bytes":133350,"raw_path":"e91e6f80eaaceb584f2332495ca16ab2902c8d464dba8ec097851744dfe1e764.html","content_hash":"ffef9e7828b9b55ea11bd3f989d367f0417201fef9324d82b8b6c67394b85385","excerpt_chars":1200,"truncated":true,"excerpt":"Introducing Claude 3.5 Sonnet \\ Anthropic Announcements Claude 3.5 Sonnet Jun 21, 2024 Try on Claude.ai Update Consumer Terms and Privacy Policy Aug 28, 2025 Today, we’re launching Claude 3.5 Sonnet—our first release in the forthcoming Claude 3.5 model family. Claude 3.5 Sonnet raises the industry bar for intelligence, outperforming competitor models and Claude 3 Opus on a wide range of evaluations, with the speed and cost of our mid-tier model, Claude 3 Sonnet. Claude 3.5 Sonnet is now available for free on Claude.ai and the Claude iOS app, while Claude Pro and Team plan subscribers can access it with significantly higher rate limits. It is also available via the Anthropic API , Amazon Bedrock , and Google Cloud’s Vertex AI . The model costs $3 per million input tokens and $15 per million output tokens, with a 200K token context window. Frontier intelligence at 2x the speed Claude 3.5 Sonnet sets new industry benchmarks for graduate-level reasoning (GPQA), undergraduate-level knowledge (MMLU), and coding proficiency (HumanEval). 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