GPT-6 Sol vs Opus 5.5: AI model blind test reveals GTM implications

The Gist

• GPT-6 Astra won for creative tasks but Opus 5.5 excels at B2B frontend prototyping
• Opus 5.5's 40% price drop makes it viable for long-running GTM automation tasks
• Model choice impacts GTM workflows from email to PRDs to video editing

• GPT-6 Astra won the reviewer's heart for its overall performance, while Opus 5.5 might be the strongest overall, especially for long-running agents and B2B frontend tasks.
• GPT-6 Sol still excels in clear writing, readable PRDs, and price, making it a strong contender for specific use cases.
• The SVG illustration test results completely overturned the reviewer's initial predictions about Anthropic's performance.
• AI video-editing results were disappointing, with skills being a potential explanation for the lackluster performance.
• An LLM judge disagreed with the reviewer's rankings, highlighting differences in what each values in model outputs.
• Barbie Bench, a 3D fashion game, revealed significant gaps in AI capabilities, particularly in rendering hands.

• Evaluate AI models based on specific use cases (e.g., long-running agents, frontend tasks, writing clarity) rather than overall performance.
• Consider GPT-6 Sol for tasks requiring clear writing and readable PRDs due to its price and performance in these areas.
• Test AI models in blind evaluations to remove bias and get a clearer understanding of their strengths and weaknesses.
• Be cautious with AI video-editing tools, as current capabilities may not meet expectations.