GPT-5.5 System Card
gpt-5-5-system-card-ed735b44·8 events·first seen 28d agoAliases: GPT-5.5 System Card, GPT-5 System Card, GPT-5 system card, GPT-4.5 System Card
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GPT-5 System Card
OpenAI has published the system card for GPT-5, revealing a unified model routing architecture that dynamically selects among multiple sub-models: gpt-5-main, gpt-5-thinking, and lightweight variants such as gpt-5-thinking-nano. The routing system is designed to balance speed and capability depending on task requirements and deployment context. This document provides the first official safety and capability disclosure for the GPT-5 model 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.
Addendum to GPT-5 System Card: Sensitive Conversations
OpenAI published an addendum to the GPT-5 system card focusing on the model's handling of sensitive conversations. The document introduces new benchmarks covering emotional reliance, mental health interactions, and jailbreak resistance. This represents an extension of GPT-5's safety evaluation documentation beyond the initial system card release.
GPT-5.5: Capabilities and Reactions
Zvi Mowshowitz's commentary on the GPT-5.5 system card and its capabilities, noting the release largely confirmed prior expectations. The piece analyzes the model's capabilities and community reactions to the release. As a tier-2 commentary source, this provides analytical framing around a significant model release rather than primary technical information.
OpenAI GPT-4.5 System Card
OpenAI has released a research preview of GPT-4.5, described as their largest and most knowledgeable model to date. The system card accompanies the model release, providing safety evaluations and capability documentation. This represents a significant step in OpenAI's model scaling trajectory between GPT-4 and any future GPT-5 release.
GPT-5.1 Instant and GPT-5.1 Thinking System Card Addendum
OpenAI published a system card addendum for GPT-5.1 Instant and GPT-5.1 Thinking, providing updated safety metrics for both model variants. The addendum includes new evaluations specifically targeting mental health and emotional reliance risks. This follows the GPT-5 system card and extends safety documentation to the 5.1 generation of models.
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.
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.