GPT-6 Sol and Luna continue to push the cost efficiency frontier for OpenAI. The two new models halve the cost of their predecessors with similar scores in the Intelligence Index
Charting the Artificial Analysis Intelligence Index shows the trade-off between Intelligence and Cost per Intelligence Index Task. Cost improvements in GPT-6 Sol and Luna are driven by a ~50% reduction in token pricing
token — The chunk of text a model reads and writes in — roughly three-quarters of a word — and the unit AI usage is billed in.
Why it matters
Signals continued downward pressure on OpenAI's model pricing without a capability tradeoff, relevant for budgeting agentic workloads on the newest GPT-6 models.
