OpenAI o1 Review 2026

OpenAI o1 — Reasoning model that thinks before it answers.

Reasoning model that thinks before it answers. Built by OpenAI.

Pricing model: Paid. Category: llm, openai, reasoning. Rating: 0/5 based on AIGather's hands-on testing.

Compare OpenAI o1 with alternatives across 1,696+ AI tools on AIGather. Rankings are never for sale and sponsored listings are always labelled.