Post
The New Stack
thenewstack.io
did:plc:kfaqksbyr3zwzvzj3wpbpvac
OpenAI launched GPT-6 Sol and Anthropic launched Opus 5.5 on September 22. I ran both of these cutting-edge frontier models through three hard developer tests, five times each. Opus 5.5 was perfect on all 15 runs, and Sol was perfect on 12 at about a sixth of the cost.
https://bit.ly/4rBpcyd
2026-09-29T01:00:33.772Z