GPT-5.6 Sol is 20%+ cheaper: Stripe acquires OpenRouter

💼 GPT-5.6 Sol is 20%+ cheaper: Stripe acquires OpenRouter

OpenAI has officially cut GPT-5.6 Sol API and credit prices by more than 20% for three months: input from $5 to $4, output from $30 to $20 per million tokens, promo valid at least until November 21, 2026. Stripe is acquiring OpenRouter — the largest LLM router: 10+ trillion tokens per day, 400+ models, 10+ million developers.

🌍 Frontier model competition is shifting to inference economics: the discount makes the flagship cheaper without a new version, while the Stripe–OpenRouter deal embeds routing across hundreds of models into payment infrastructure.

👤 Until November 21, Sol costs $4 per million input tokens and $20 per million output tokens — prices may change without a release, so don't hardcode numbers in your applications. OpenRouter users don't need to change anything: names and integrations remain the same.

Source 1: https://msukhareva.substack.com/p/ai-realist-radar-gpt56-sol-pricing