GPT-5.5 costs 49 to 92 percent more than its predecessor, depending on the input length

OpenAI has significantly increased the pricing for its latest language model, GPT-5.5, with costs rising by 49 to 92 percent compared to GPT-5.4, depending on the length of the input. This price hike comes as the company prepares for a potential IPO, reflecting a broader trend in the AI industry where competitors, like Anthropic, are also raising prices for their models, such as Opus 4.7. The timing of these changes is critical as companies look to maximize revenue in a competitive market.

While OpenAI claims that shorter response lengths will help mitigate the cost increase for users, an analysis by OpenRouter reveals that actual usage costs are significantly higher than suggested. This price adjustment could have substantial implications for businesses relying on these AI models for various applications, from customer service to content generation. As companies weigh the cost-benefit of using these advanced tools, the rising expenses may push some to explore alternatives or negotiate different usage strategies. The trend of increasing model prices could also signal a shift in the market dynamics, where premium offerings become the norm as companies prepare for public listings.

As the AI landscape evolves, stakeholders should keep an eye on how these pricing strategies will affect user adoption and competition among AI providers, especially as more companies consider going public.