OpenAI unveils GPT-5.6: three models for three budgets
OpenAI previewed GPT-5.6 with three variants — Sol, Terra and Luna — betting on frontier reasoning and lower costs.
OpenAI has shifted the board again. The company previewed GPT-5.6, its new flagship for developers and businesses, and this time it didn’t come alone: alongside Sol come Terra and Luna, each built for a different job.
Sol is the heavy brain, made for frontier reasoning and long, autonomous tasks, the kind that demand planning and multiple steps. Terra is the balanced everyday option, with performance near GPT-5.5 at half the cost. And Luna is the fastest, cheapest of the family, for anyone who wants nimble answers without the fuss.
The war changed its axis
The technical highlight is in coding, scientific reasoning and agentic workflows, with new reasoning-effort levels. But the market read is something else: the race is no longer just about bigger models, it’s about efficient ones that do the same while spending less.
For businesses in Portugal, that’s good news: more options and lower prices mean AI stops being a luxury for big budgets.
See also: OpenAI’s earlier announcement and the turn toward efficiency. Official detail at OpenAI.
Image: Wikimedia Commons