OpenAI Widens GPT-5.6 Rollout in 3 Versions as Musk Teases Grok 4.5
Updated
Updated · Business Insider · Jul 8
OpenAI Widens GPT-5.6 Rollout in 3 Versions as Musk Teases Grok 4.5
3 articles · Updated · Business Insider · Jul 8
Summary
Thursday marks OpenAI's broader public rollout of GPT-5.6 after a limited partner release last month and a Trump administration request to stagger the launch.
Three variants will debut: Sol as the flagship for coding, biology and cybersecurity; Terra for everyday work; and Luna for speed and lower cost.
Hours after OpenAI's announcement late Tuesday in California, Elon Musk said SpaceXAI would launch Grok 4.5 in the coming days, calling it an Opus-class model that is faster, more token-efficient and cheaper.
Efficiency has become a central selling point as customers scrutinize token spending, with Google also preparing to release Gemini 3.5 Pro later this month.
The dueling launches extend Musk's rivalry with OpenAI CEO Sam Altman after Musk lost a 2024 lawsuit accusing OpenAI of abandoning its nonprofit mission.
As OpenAI and Musk launch rival models on the same day, is the AI race now more about price than power?
As new AI 'agents' are unleashed, what unseen risks do these autonomous systems pose to our cybersecurity and economy?
With Washington now directing AI rollouts, who truly controls the future of this technology—innovators or regulators?
OpenAI GPT-5.6 and xAI Grok 4.5 Launch: Benchmarking the Next Generation of AI Under Tightened US Regulation
Overview
On July 8, 2026, OpenAI and xAI launched GPT-5.6 and Grok 4.5 at the same time, marking a new phase of intense competition in artificial intelligence. Both models focus on advancing coding and agentic tasks while aiming to improve cost efficiency for users and businesses. OpenAI introduced a new naming system for GPT-5.6, with Sol, Terra, and Luna representing different capability tiers, reflecting a move toward more specialized models. This simultaneous launch highlights how leading AI developers are pushing innovation and making powerful tools more accessible and affordable for a wider range of users.