OpenRouter cuts GPT-5.6 Sol costs by 50%; Vercel offers limited promotion

AI aggregation platform OpenRouter announced a 50% discount on access costs for OpenAI's GPT-5.6 Sol model. Input pricing dropped from 5 to 2.50 dollars per million tokens, while output pricing fell from 30 to 15 dollars. Competing platform Vercel also launched a similar promotion, but limited to one month, valid until September 18, 2026, applicable to Standard and Fast modes. Analysts view the strategy as a marketing tactic, since OpenRouter and Vercel are the primary data sources for evaluating AI model performance, and discounts tend to attract more users to test GPT-5.6 Sol.