Key Info
GPT-6.1 Sol from OpenAI is live on OpenRouter, nearly matching GPT-6 Astra on agentic coding, computer use, and professional work while costing one-fifth as much. GPT-6.1 Sol Pro, a pro reasoning mode of the same model, is also available for harder, high-stakes problems.
Highlights
- Pricing: $2/M input, $10/M output, with cached input at $0.10/M — half of GPT-6 Sol's cached price.
- Positioned as the most cost-efficient model for its performance available today.
- Pro reasoning variant targets hard, high-stakes problems where extra cost is justified.
- Performance is described as near-Astra intelligence at a fifth of the price.
