OpenAI cuts GPT-5.6 Sol API prices 20%

OpenAI cut GPT-5.6 Sol’s standard short-context API rates to $4 per million input tokens and $20 per million output tokens, down from $5 and $30, according to the pricing report. That is a 20% input cut and a 33% output cut, while ChatGPT subscription prices remain unchanged; the lower prices also extend to eligible ChatGPT Work and Codex credits. Teams already comparing frontier model economics in the archive should rerun routing thresholds, because a change in output cost can move the break-even point for long-form agents even when model quality and seat pricing do not change.