GPT-6.1 Sol Arrives: Near-Astra AI Agent Intelligence at One-Fifth the Cost
K.AI LAB TECH / AI NEWS Published: 30 September 2026 · By K.AI Lab Tech GPT-6.1 Sol is changing the cost of practical AI agents OpenAI has introduced GPT-6.1 Sol , a new model designed to bring near-Astra-level performance to coding, computer use and professional work at a much lower cost. For builders, small businesses and automation developers, this is important because the next challenge is not simply asking AI questions. The challenge is running reliable AI agents across real business workflows. Quick answer: GPT-6.1 Sol is positioned as a faster and more affordable model for agentic coding, computer-use tasks and multi-step business automation. OpenAI says its standard input and output token prices are one-fifth of GPT-6 Astra, while cached input is priced at $0.10 per million tokens. What OpenAI announced According to the official OpenAI announcement , GPT-6.1 Sol improves on GPT-6 Sol across complex professional tasks, including writing and debugging code, understanding documen...