FrontierThe story, in brief
GPT-5.5 tops benchmarks but still hallucinates frequently at a 20 percent higher API cost
GPT-5.5 reclaims benchmark crown. But at 20% higher cost and persistent hallucination issues, the real question isn't capability—it's whether the trade-off still pencils out.
The KeyNews take
Why it matters
OpenAI's latest model raises the capability ceiling but introduces a pricing/reliability tension that will force enterprises to reassess their model selection criteria beyond raw benchmark scores.
The key facts
4 to knowGPT-5.5 tops AI benchmarks
20% API cost increase
Hallucination rates remain elevated relative to performance gains
Positioned as best value among proprietary models despite higher price
Go to the source
The Decoderthe-decoder.com
Publisher excerpt: GPT-5.5 pushes OpenAI back to the top of the AI benchmarks. The price went up, but it still looks like the best bang for your buck among proprietary models.