OpenAI unveiled its latest family of models, GPT-5.6, on Thursday, introducing three variants: Sol, Terra, and Luna. These models aim to enhance efficiency in enterprise work, coding, and scientific research.
CEO Sam Altman stated that Sol is 54% more token efficient for AI coding tasks compared to previous models. OpenAI claimed GPT-5.6 is its “strongest cybersecurity model yet,” achieving superior performance with reduced token usage.
Concerns about the potential misuse of such models were raised during the Trump administration. GPT-5.6’s cyber capabilities include support for defensive measures like threat modeling, code review, patching, and blue teaming, which involves simulating cyberattacks to identify system vulnerabilities.
Additionally, OpenAI launched a tool named ChatGPT Work, designed for enterprise teams to assist with daily clerical tasks, including document, spreadsheet, and presentation drafting. This tool is accessible via desktop, web, and mobile platforms.
The introduction of GPT-5.6 aligns with recent releases from competitors SpaceXAI and Meta, amid increasing competition in the AI sector. OpenAI’s marketing strategies appear targeted at competing with Anthropic, its main competitor, which has gained traction among enterprise customers.
OpenAI referenced the Artificial Analysis Coding Agent Index to assert that its models outperform those from Anthropic. The company characterized Sol as its “best coding model yet,” claiming it scores 80, which is 2.8 points higher than Anthropic’s Fable 5, while consuming fewer tokens and costing less.
In terms of performance compared to competitors, OpenAI noted Terra slightly surpasses Fable 5, and Luna outperforms Opus 4.8. GPT-5.6 is now available through ChatGPT, Codex, and the OpenAI API. Pricing per million tokens is set at $5 input and $30 output for Sol, $2.50 input and $15 output for Terra, and $1 input and $6 output for Luna.
