OpenAI Cuts GPT-6 Prices by 50% in Escalating AI Model Price War

OpenAI is stepping up the pressure in the enterprise AI market. On September 22, 2026, the company introduced GPT-6 Sol and Luna — two smaller variants of its GPT-6 Astra model — priced at $2 per million input tokens and $10 per million output tokens. That is 50% cheaper than comparable prior offerings.

The move is a direct response to Anthropic’s Claude Fable 5.1 and the broader competitive threat from open-source models out of China that now deliver frontier-level performance at a fraction of the cost.

Key Takeaways

• 50% price cut on GPT-6 Sol and Luna: Input pricing at $2/million tokens, output at $10/million, aimed at accelerating enterprise adoption.
• IPO momentum: OpenAI filed its initial IPO documents in June 2026; lower pricing helps boost the revenue base and user adoption metrics investors will scrutinize.
• Open source is the real pressure: Analysts noted vendors are not just competing with themselves — Chinese open-source models providing comparable capability are forcing all closed-model vendors downward on price.
• Sustainability questions: Experts warn that aggressive price cuts are likely unsustainable, and the real signal to watch is investor confidence, not pricing alone.

GPT-6 Sol and Luna are designed as cost-efficient entry points for companies that need capable but not cutting-edge performance. OpenAI frames the price reduction as a growth lever ahead of its IPO, with the goal of making the economics of running its models work at scale for business customers.

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