{"schema_version":"onlylabs.public_signal.v1","title":"OpenAI Writing: Addendum to GPT-5.2 System Card: GPT-5.2-Codex","description":"OpenAI writing signal with public source context, captured evidence pages, related signals, and data-business radar classification.","url":"https://onlylabs.fyi/signals/b4c8039b-c3ba-4cab-b641-a689ce9b520b","json_url":"https://onlylabs.fyi/signals/b4c8039b-c3ba-4cab-b641-a689ce9b520b/signal.json","generated_at":"2026-06-08T15:45:26.365+00:00","org":{"slug":"openai","name":"OpenAI","category":"frontier-lab","category_label":"Frontier lab","dossier_url":"https://onlylabs.fyi/labs/openai","dossier_json_url":"https://onlylabs.fyi/labs/openai/dossier.json"},"related_urls":{"signal":"https://onlylabs.fyi/signals/b4c8039b-c3ba-4cab-b641-a689ce9b520b","signal_json":"https://onlylabs.fyi/signals/b4c8039b-c3ba-4cab-b641-a689ce9b520b/signal.json","source":"https://openai.com/index/gpt-5-2-codex-system-card","lab_dossier":"https://onlylabs.fyi/labs/openai","lab_dossier_json":"https://onlylabs.fyi/labs/openai/dossier.json","analysis":"https://onlylabs.fyi/analysis/openai","analysis_json":"https://onlylabs.fyi/analysis/openai/analysis.json","analysis_evidence_json":"https://onlylabs.fyi/analysis/openai/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":"OpenAI published Addendum to GPT-5.2 System Card: GPT-5.2-Codex. 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High-signal details: Addendum to model card, low traction · Addendum to GPT-5.2 System Card: GPT-5.2-Codex | OpenAI December 18, 2025 Addendum to GPT‑5.2 System Card: GPT‑5.2‑Codex Read the System Card Share Introduction.... onlylabs links this event to 1 captured evidence page and 6 related writing signals.","signal_desk":"talking","source_context":{"source_url":"https://openai.com/index/gpt-5-2-codex-system-card","source_host":"openai.com","occurred_at":"2025-12-18T00:00:00+00:00","first_seen_at":"2026-06-05T05:42:57.832854+00:00","date_source":"rss.item_date","context":null},"context_markers":[{"label":"Lab","value":"OpenAI","source":"signal"},{"label":"Signal desk","value":"talking","source":"signal"},{"label":"Source host","value":"openai.com","source":"source"},{"label":"Notability","value":"Addendum to model card, low traction","source":"signal"},{"label":"Watch term","value":"Model card","source":"model"},{"label":"Watch 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posture, launch narratives, and market attention.."},{"subject":"Addendum to GPT-5.2 System Card: GPT-5.2-Codex","predicate":"has source host","object":"openai.com","text":"Addendum to GPT-5.2 System Card: GPT-5.2-Codex has source host openai.com."},{"subject":"Addendum to GPT-5.2 System Card: GPT-5.2-Codex","predicate":"has lab","object":"OpenAI","text":"Addendum to GPT-5.2 System Card: GPT-5.2-Codex has lab OpenAI."},{"subject":"Addendum to GPT-5.2 System Card: GPT-5.2-Codex","predicate":"has signal desk","object":"talking","text":"Addendum to GPT-5.2 System Card: GPT-5.2-Codex has signal desk talking."},{"subject":"Addendum to GPT-5.2 System Card: GPT-5.2-Codex","predicate":"has source host","object":"openai.com","text":"Addendum to GPT-5.2 System Card: GPT-5.2-Codex has source host openai.com."},{"subject":"Addendum to GPT-5.2 System Card: GPT-5.2-Codex","predicate":"has notability","object":"Addendum to model card, low traction","text":"Addendum to GPT-5.2 System Card: 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This talking signal gives public context for research themes, product direction, policy, or launch framing. 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A version of GPT‑5.2⁠ optimized for agentic coding in Codex, it includes further improvements on long-horizon work through context compaction, stronger performance on project-scale tasks like refactors and migrations, and improved performance in Windows environments—and significantly stronger cybersecurity capabilities. This system card outlines the comprehensive safety measures implemented for GPT‑5.2‑Codex. It details both model-level mitigations, such as specialized safety training for harmful tasks and prompt injections, and product-level mitigations like agent sandboxing and configurable network access. GPT‑5.2‑Codex was evaluated under our Preparedness Framework. It is very capable in the cybersecurity domain but does not reach High capability on cybersecurity. We expect current trends of rapidly increasing capability to continue, and for models to cross the High cybersecurity threshold in the near future. 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