Rasool comments on GPT-4.1 Is a Mini Upgrade

[Rasool]

Does this match your understanding?

AI Company	Public/​Preview Name	Hypothesized Base Model	Hypothesized Enhancement	Notes
OpenAI	GPT-4o	GPT-4o	None (Baseline)	The starting point, multimodal model.
OpenAI	o1	GPT-4o	Reasoning	First reasoning model iteration, built on the GPT-4o base. Analogous to Anthropic’s Sonnet 3.7 w/​ Reasoning.
OpenAI	GPT-4.1	GPT-4.1	None	An incremental upgrade to the base model beyond GPT-4o.
OpenAI	o3	GPT-4.1	Reasoning	Price/​cutoff suggest it uses the newer GPT-4.1 base, not GPT-4o + reasoning.
OpenAI	GPT-4.5	GPT-4.5	None	A major base model upgrade
OpenAI	GPT-5	GPT-4.5	Reasoning	”GPT-5″ might be named this way, but technologically be GPT-4.5 + Reasoning.
Anthropic	Sonnet 3.5	Sonnet 3.5	None	Existing model.
Anthropic	Sonnet 3.7 w/​ Reasoning	Sonnet 3.5	Reasoning	Built on the older Sonnet 3.5 base, similar to how o1 was built on GPT-4o.
Anthropic	N/​A (Internal)	Newer Sonnet	None	Internal base model analogous to OpenAI’s GPT-4.1.
Anthropic	N/​A (Internal)	Newer Sonnet	Reasoning	Internal reasoning model analogous to OpenAI’s “o3”.
Anthropic	N/​A (Internal)	Larger Opus	None	Internal base model analogous to OpenAI’s GPT-4.5.
Anthropic	N/​A (Internal)	Larger Opus	Reasoning	Internal reasoning model analogous to hypothetical GPT-4.5 + Reasoning.
Google	N/​A (Internal)	Gemini 2.0 Pro	None	Plausible base model for Gemini 2.5 Pro according to the author.
Google	Gemini 2.5 Pro	Gemini 2.0 Pro	Reasoning	Author speculates it’s likely Gemini 2.0 Pro + Reasoning, rather than being based on a GPT-4.5 scale model.
Google	N/​A (Internal)	Gemini 2.0 Ultra	None	Hypothesized very large internal base model. Might exist primarily for knowledge distillation (Gemma 3 insight).

[Anomalous]

Where does o4-mini fall in this table? 4.1 + reasoning + enhancements, or 4.5 + reasoning—size?