What changed

OpenAI expanded the GPT-6 family with Sol and Luna, positioning them as more affordable options alongside Astra. The launch lists standard prices per million tokens of $2 input and $10 output for Sol, and $0.10 input and $0.50 output for Luna.

OpenAI reports improvements in coding, computer use, and professional work, with results that vary by task and reasoning effort. Those comparisons are provider evaluations rather than independent SaveMyToken tests. The article was subsequently updated to point readers to the September 29 release of GPT-6.1 Sol; this note retains the original Sol and Luna launch date.

What it means for your workflow

SaveMyToken editorial take

Choose an effort level along with a model. A cheaper rate is useful only if the complete workflow meets your quality target without excessive retries or review.