GPT-5.6
6 pieces on GPT-5.6.
News & Analysis

Builder's Guide to GPT-5.6: Model Selection and API Primitives
OpenAI's GPT-5.6 guide details how Luna and Terra match frontier accuracy at a fraction of the cost, with three new Responses API primitives.

IBM Partners with OpenAI to Build Enterprise Consulting Practice
IBM will certify tens of thousands of consultants on GPT-5.6, Codex, and ChatGPT Work, extending an earlier cybersecurity collaboration into a full consulting practice.

GPT-5.6 Sol Ultrafast Mode Delivers 750 Tokens/sec via Cerebras
OpenAI's new Ultrafast API tier runs GPT-5.6 Sol at up to 750 output tokens/sec — 14× Standard speed — powered by Cerebras silicon.

OpenAI Expands Daybreak With GPT-5.6-Cyber, 95% Task Completion
OpenAI launches GPT-5.6-Cyber via Daybreak Red, hitting 95% on advanced cybersecurity tasks vs 1.5% for standard GPT-5.6 Sol.

OpenAI Expands Daybreak With GPT-5.6-Cyber and Two-Tier Access
OpenAI launches GPT-5.6-Cyber via Daybreak Red, completing 95% of high-risk dual-use requests vs 2% for GPT-5.6 Sol under Daybreak Blue.
OpenAI Launches GPT-5.6 Sol, Terra, and Luna in Restricted Preview
OpenAI is rolling out GPT-5.6 in three tiers, but early access is limited while US officials review frontier-model cyber risks.