OpenAI: GPT 5.6 Sol price reduction (until at least Nov 21)

OpenAI’s promotional pricing for GPT-5.6 Sol runs at least through Nov 21 2026, while regional-processing endpoints for models released after Mar 5 2026 incur a 10% uplift. Fast mode (formerly “priority”) is available for most models except GPT-6 Astra with EU data residency, and OpenAI’s fine-tuning platform is being phased out, restricting new access but keeping existing fine-tuned models available for inference.