OpenAI cuts GPT-5.6 Sol API pricing 20% through November 21
OpenAI dropped GPT-5.6 Sol API pricing over 20% until November 21, 2026 — input $5 to $4, output $30 to $20, cached input $0.50 to $0.40 — crediting roughly 20% lower serving costs from production GPU kernel work. It is a promotional cut, not a permanent one, and the first mid-life price change to a model ID since 2022, so pricing calculators and cost-estimation code now have to handle a model whose rate moves under a fixed ID.
Source: community.openai.com ↗
This is the first time that OpenAI has changed the price of a particular model ID since 2022.
VeitB, community.openai.com
Why this matters
- → First mid-life price change to a GPT model ID since 2022 breaks cost-estimation tooling.
- → Promotional cuts force developers to handle dynamic pricing within fixed model identifiers.
- → 20% reduction signals GPU efficiency gains that may or may not stick after November.
Pricing instability