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AI News / GPT-5.5 Tops Benchmarks but Still Hallucinates Frequently at a 20 Perc
AI for Software Engineering (Copilots, SDLC, Testing) EN-US 26.04.2026
GPT-5.5 Tops Benchmarks but Still Hallucinates Frequently at a 20 Percent Higher API Cost
1 min read AI for Software Engineering (Copilots, SDLC, Testing) -/5
In short
  • The introduction of GPT-5.5 marks a significant advancement for OpenAI, as it achieves the highest standards in the AI industry.
  • However, despite a 20 percent increase in API costs, it remains one of the most cost-effective options among proprietary models.
  • In this context, it is important to note that the frequent hallucinations of the model present a challenge that carries both opportunities and risks.
Graphic illustrating the launch of GPT-5.5, showcasing advancements and challenges in AI technology, including hallucinations and API costs.
Editor: Martin Haak
-/5 (0)
The introduction of GPT-5.5 marks a significant advancement for OpenAI, as it achieves the highest standards in the AI industry. However, despite a 20 percent increase in API costs, it remains one of the most cost-effective options among proprietary models. In this context, it is important to note that the frequent hallucinations of the model present a challenge that carries both opportunities and risks. A comprehensive assessment of these developments requires a nuanced consideration of market conditions and technological advancements. The decisive factors will be user reactions and future regulations.
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