GPT-6 Sol

GPT‑6 Sol, also called GPT‑6.1 Sol, is a cheaper Astra‑like model released earlier in 2026. It uses the same base weights as the flagship GPT‑6 Sol but performs two inference passes instead of three, enabling quicker output while keeping similar accuracy. The design details were disclosed in a Microsoft technical write‑up that leaked the looped‑inference mechanism—loops the same transformer layers multiple times before producing output. ScaledownSummarizationMiddleware USES_MODEL openai:gpt-6-sol Gemini 4 Argon model has the same price as GPT-6 Sol OpenAI GPT‑5.6 models are available through the Amazon Bedrock Converse API. OpenAI claimed that GPT-6 Sol scored about 21 percent accuracy at low reasoning effort OpenAI has the GPT-6 Sol model· Entity summary generated by Graphiti