GPT-5.6 Sol Ultrafast Mode Preview: Up to 14x Speed Boost
AI news brief: OpenAI launches a new API service tier called ‘Ultrafast’ in preview, running the GPT-5.6 Sol model at speeds up to 14x faster than the current version. The service is powered by Cerebras compute, with output speeds reaching up to 750 tokens per second. See the original article for full details.