GPT-6.1 Sol

Overview

A GPT-6 family model OpenAI positions as near-Astra performance for coding, computer use and professional work at lower token prices than GPT-6 Astra. Distinct from the Sept 22 GPT-6 Sol launch; API model id is gpt-6.1-sol.

API card lists $2 input / $10 output per million tokens, 1,050,000 context window, 128,000 max output tokens, Apr 30, 2026 knowledge cutoff. Help Center says it is rolling in ChatGPT Work and Codex starting with Pro, then Plus, Business, Enterprise and Edu.