Gemini 3 Pro is unique in sometimes giving mildly useful observations on the topic of discussion unprompted, things not mentioned even as questions, that weren’t part of intended meaning underlying the prompting. Opus 4.5 doesn’t have that, even as it’s much saner overall.
(As a less meaningful anecdote, Opus 4.5 still doesn’t solve the Fibonacci double quine puzzle that Gemini 3 Pro was the first to solve, so it’s not a level of capability that’s overdetermined for this weight class of LLMs, even as Anthropic is more focused on programming than GDM. Probably Ironwood-scale LLMs of late 2026 will get there more robustly.)
Gemini 3 Pro is unique in sometimes giving mildly useful observations on the topic of discussion unprompted, things not mentioned even as questions, that weren’t part of intended meaning underlying the prompting. Opus 4.5 doesn’t have that, even as it’s much saner overall.
(As a less meaningful anecdote, Opus 4.5 still doesn’t solve the Fibonacci double quine puzzle that Gemini 3 Pro was the first to solve, so it’s not a level of capability that’s overdetermined for this weight class of LLMs, even as Anthropic is more focused on programming than GDM. Probably Ironwood-scale LLMs of late 2026 will get there more robustly.)