OpenAI cuts GPT-5.6 Sol API prices

This is a meaningful correction to Sol’s premium positioning: frontier reasoning becomes easier to deploy at production scale, though the temporary pricing window makes long-term budgeting uncertain.

• –Input pricing is down 20%, while output pricing falls 33.3% from $30 to $20 per million tokens
• –Merge Gateway users can access the discount through a unified routing layer with failover, cost controls, and provider switching
• –The cut improves Sol’s economics for output-heavy agents, where generation costs often dominate
• –Developers should treat the November 21 end date as a planning boundary and avoid hardcoding the promotional rate into forecasts
• –Terra and Luna remain substantially cheaper, preserving a clear model-routing strategy for mixed workloads