On AI Gateway, GPT-5.6 Luna and GPT-5.6 Terra are now cheaper and GPT-5.6 Sol is faster.
AI Gateway adds no markup on token pricing, so these changes reach you at the upstream rate.
The changes apply to both short and long context pricing.
GPT-5.6 Sol keeps the same price; its fast mode now runs 2.5x faster, up from 1.5x. Model IDs are unchanged, so existing requests get the new rates and speed with no code change.
See full pricing detail on AI Gateway.