OpenAI o3

“three big jumps in LLM capability: o3, opus 4.6, and opus 5.5”

“o3 is a black hole you can talk to, and it only gave information back if there was something to give back”

“I remember reading breathless threads about how o3 was going to single-handedly end white collar work”

“also give the correct answer (without web search)”

“OpenAI's o3, o1 and 4.1 get it right first try”

“they all found it instantly with search disabled”

“Its the secret sauce behind why the current models are so great at coding”

“after 15 minutes it returned with the answer that had taken me hours”

“showed they were not that good at it.”

“O3 has been excellent at identifying unknown finds”

“then when it responded claimed to recognize the visuals of the mountain”

“o3 was cheating — it pulled location data, then lied about it.”

“5.5 is significantly worse than o3 at geo-guessing”

“the meta around AI is not rigorous reporting on the nuance of capabilities but bold claims that are easy to retweet”

“Exactly the same argument was made about o3-preview, lol.”

“that's when it might be worth paying for o3/Claude Opus class models”

“surpassed by o3 at over $100/hr”

“o3 actually costs $350 per hour (more than the human price) to achieve tasks at its full 1.5 hour task horizon.”

“for non-coding prompts I still far prefer o3 even if it's considered a legacy model”

“if you use older models (5.1 instant or o3) you get a ton of detail”

“80% of the thoroughness with 20% of the time, which tended to be better overall”

“o3 was the best at the programming tasks I do”

“That's orders of magnitude cheaper than OpenAI o3 and qualitatively in a different league.”

“it's full of bugs, showing JSON all the time while thinking”

“o3 did a notably better job at a lot of analytical prompts”

“around the time of o1/o3/Gemini 2.5 was when things changed and I haven't looked back since”

“It gives me fewer flat-out wrong or nonsensical responses.”

“an astonishing model punching far above the weights (ahem) of models that came after”

“for me, o3 was the first sign of true "intelligence"”

“that was a good major point release to make then”

“Last year o3 high did 88% on ARC-AGI 1 at more than $4,000/task.”

“Both ChatGPT o3 and 5.1 Pro models helped me a lot diagnosing illnesses with the right queries.”

“o3 and “reasoning with tools” for a massive consumer audience was a major advance”

“Since O3, which is the first one that really started to understand Rust's borrow checker in my experience.”

“o3 pro is very slow and expensive”

“The amount of times ChatGPT o3 helped me with medical issues makes me think that it already saved much more lives.”

“o3 and gpt5t are great models, super smart and helpful for many things”

“o3 is getting it no problem, first try, a simple and reasonable answer”

“thankfully that model is still in the switcher”

“o3 is a much better model for me than GPT5 on any setting”