OpenAI's GPT-6.1 Sol and Sol Pro land on OpenRouter with 1M-token context
GPT-6.1 Sol and GPT-6.1 Sol Pro appeared on OpenRouter on 2026-09-29. Sol is described as an upgrade to GPT-6 Sol and sits below the flagship GPT-6 Astra. Both listings carry a context length of 1050000 tokens and the same price: $2.00 per 1M input tokens and $10.00 per 1M output tokens. Sol is pitched at agentic coding, computer use and document-heavy professional work. Sol Pro is the same underlying model served with reasoning.mode set to pro, aimed at higher-quality responses on complex tasks, though the listing notes that pro mode spends far more, so what the extra spend buys is the open question.

