GPT-5.5 tops benchmarks but still hallucinates frequently at a 20 percent higher API cost
GPT-5.5 costs about 20 percent more than GPT-5.4 over the API. The model tops the AI rankings, but it has a hallucination problem.
Read the original at The Decoder ↗
- Topics
- Hallucinations & Fabrication
- Mentions
- GPTOpenAI
- Tracked via
- “AI hallucination”
Same story, other outlets
- GPT-5.5 tops benchmarks but still hallucinates frequently and costs 20 percent more over the API The Decoder · Apr 24, 2026