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

OpenAI doubled GPT-5.5's list price compared to GPT-5.4, claiming shorter responses would offset the increase. An OpenRouter analysis of real usage data tells a different story: actual costs rose 49 to 92 percent depending on input length. Anthropic hiked Opus 4.7 prices too—and with both companies eyeing IPOs, the trend is unlikely to stop. The article GPT-5.5 costs 49 to 92 percent more than its predecessor, depending on the input length appeared first on The Decoder .