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  2. /Discussion
  3. /OpenAI DevDay 2025: Opening keynote [video]
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  3. /OpenAI DevDay 2025: Opening keynote [video]
Last activity about 2 months agoPosted Oct 6, 2025 at 1:00 PM EDT

Openai Devday 2025: Opening Keynote [video]

meetpateltech
56 points
12 comments

Mood

calm

Sentiment

mixed

Category

other

Key topics

Openai
AI Development
GPT Models
Debate intensity40/100

The OpenAI DevDay 2025 keynote video is shared, sparking discussion about the new developments and features presented, including GPT-5-pro, with commenters analyzing the demo and its implications.

Snapshot generated from the HN discussion

Discussion Activity

Active discussion

First comment

3h

Peak period

11

Day 1

Avg / period

6

Comment distribution12 data points
Loading chart...

Based on 12 loaded comments

Key moments

  1. 01Story posted

    Oct 6, 2025 at 1:00 PM EDT

    about 2 months ago

    Step 01
  2. 02First comment

    Oct 6, 2025 at 4:03 PM EDT

    3h after posting

    Step 02
  3. 03Peak activity

    11 comments in Day 1

    Hottest window of the conversation

    Step 03
  4. 04Latest activity

    Oct 8, 2025 at 12:29 AM EDT

    about 2 months ago

    Step 04

Generating AI Summary...

Analyzing up to 500 comments to identify key contributors and discussion patterns

Discussion (12 comments)
Showing 12 comments
simonw
about 2 months ago
2 replies
I live-blogged the keynote here, adding a little bit of extra commentary and links along the way: https://simonwillison.net/2025/Oct/6/openai-devday-live-blog...
naiv
about 2 months ago
"Sam says today Codex is out of preview and into GA. But which one! Codex CLI or Codex Cloud or both?"

The cloud version as "Starting October 20, Codex cloud tasks will also begin counting towards your Codex usage"

Awesomedonut
about 2 months ago
Reading through this was so cool! What was being in-person at the keynote like, overall?
naiv
about 2 months ago
1 reply
The "live" coding demo felt very staged with codex reasoning set at "low" and everything working ootb.
svelle
about 2 months ago
1 reply
Probably didn't want to risk the same embarrassment that was the Meta live demo.
tymscar
about 2 months ago
1 reply
Every single person I know had nothing but respect for the meta people doing it live. I think they garnered more attention that way
n2d4
about 2 months ago
We clearly don't have the same friends then! The event was the ridicule of the day on Twitter (wrongly, in my opinion, given that the tech is very good).
bluelightning2k
about 2 months ago
2 replies
I follow things pretty closely, and I was genuinely unsure if GPT5-pro was a real thing or just equivalent to setting GPT-5 to high reasoning.

Does the fact it's entering the API confirm that it's a fully separate thing which is not widely benchmarked, and which was not part of the GPT-5 stream?

This particular thing has not been well communicated AFAICT.

Tiberium
about 2 months ago
GPT-5 Pro is different from GPT-5 just like o3 Pro is different from o3 and o1 Pro is different from o1 :) OpenAI doesn't want to tell the truth, but it might be something similar in the spirit to e.g. Entropix. [0]

[0] https://github.com/xjdr-alt/entropix

tedsanders
about 2 months ago
GPT-5 Pro is not just GPT-5 with higher reasoning effort - it’s a different thing.

Under the hood, it’s based on GPT-5, and you’ll notice all of GPT-5’s personality traits in its outputs, so it still bears the GPT-5 brand.

warofwords
about 2 months ago
Terrifying disaster for humanity this person is allowed to impact children .
meerab
about 2 months ago
I created transcript for it for anyone wanting to read instead of listen!

https://videotobe.com/play/youtube/hS1YqcewH0c

View full discussion on Hacker News
ID: 45493432Type: storyLast synced: 11/20/2025, 1:45:02 PM

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