Addendum to GPT-5.2 System Card: GPT-5.2-Codex
OpenAI published a system card addendum for GPT-5.2-Codex, a specialized variant of GPT-5.2 focused on coding capabilities. The document provides safety evaluations, capability assessments, and deployment considerations specific to this coding-oriented model. As a Tier 1 source system card, it represents official documentation of a frontier coding model's properties and risk profile.
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GPT-5.1-Codex-Max System Card
OpenAI has published the system card for GPT-5.1-Codex-Max, a coding-focused model variant. The card details model-level safety mitigations including specialized safety training against harmful tasks and prompt injection attacks, as well as product-level controls such as agent sandboxing and configurable network access. This represents OpenAI's formal safety documentation for an agentic coding model deployment.
GPT-5.3-Codex System Card
OpenAI has released the system card for GPT-5.3-Codex, described as the most capable agentic coding model to date. It combines the frontier coding performance of GPT-5.2-Codex with the reasoning and professional knowledge capabilities of GPT-5.2. The release represents a continuation of OpenAI's Codex line of specialized coding models within the GPT-5 family.
OpenAI releases GPT-5-Codex: GPT-5 variant optimized for agentic coding
OpenAI has published an addendum to the GPT-5 system card introducing GPT-5-Codex, a version of GPT-5 specifically optimized for agentic coding within the Codex environment. The model features dynamic thinking-effort adjustment, scaling compute based on task complexity—responding quickly to simple queries while sustaining longer independent work on complex coding tasks. This represents a specialized derivative of GPT-5 targeting software engineering agents rather than general-purpose use.
Introducing GPT-5.2-Codex
OpenAI has released GPT-5.2-Codex, described as their most advanced coding model. The model features long-horizon reasoning, large-scale code transformation capabilities, and enhanced cybersecurity features. This represents a specialized coding-focused model in the GPT-5 family.
GPT-5.5 System Card
OpenAI has published the system card for GPT-5.5, a new model in their GPT series. The system card documents safety evaluations, capability assessments, and deployment considerations for the model. As a tier 1 source announcement, this represents an official release document accompanying a new frontier model.
GPT-5.5: The System Card — Commentary
Zvi Mowshowitz's commentary on OpenAI's announcement of GPT-5.5 and GPT-5.5-Pro, analyzing the associated system card. The piece is a tier-2 analytical response to a major model release. Full content appears truncated, but the item covers the safety and capability disclosures accompanying the new model family.
Introducing GPT-5.3-Codex
OpenAI has announced GPT-5.3-Codex, described as a Codex-native agent combining frontier coding performance with general reasoning capabilities. The model is designed to support long-horizon, real-world technical work. The announcement positions it as an agentic coding system rather than a standalone language model.
OpenAI Releases GPT-5.2 System Card Update
OpenAI has published a system card update for GPT-5.2, the latest model family in the GPT-5 series. The safety mitigation approach is described as largely consistent with the prior GPT-5 and GPT-5.1 system cards. Training data sources follow the same pattern as other OpenAI models: publicly available internet data, third-party partnerships, and user/researcher-generated content.