Harley Trung (@harleytt) header
Harley Trung (@harleytt) profile picture

preventing engineers from becoming cavemen. on the way towards managing 100 AI agents, while managing 100 engineers. brag: yale/microsoft/marathon/ultra/ironman

Ho Chi Minh, Vietnam
Joined September 2009
Photo by Harley Trung (@harleytt)Photo by Harley Trung (@harleytt)Photo by Harley Trung (@harleytt)Photo by Harley Trung (@harleytt)Photo by Harley Trung (@harleytt)Photo by Harley Trung (@harleytt)Photo by Harley Trung (@harleytt)Photo by Harley Trung (@harleytt)Photo by Harley Trung (@harleytt)Photo by Harley Trung (@harleytt)
Best model, bad name?
We’re opening a research preview of Claude Duet, a new app where Claude works as a proactive agent. It comes to you with what needs your attention, completes tasks you ask of it, keeps working when you step away, and checks with you before it acts on your behalf.
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This makes typing more efficient than talking, if you constantly change your mind and think in short words
Day 4/ We have improved steering to be instant, leading to the model now reacting much faster to adjustments you make, allowing you to course-correct direction in realtime and not have the model waste effort. Also releasing GPT-6.1 Sol ultrafast. The two work very well together.
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Hahaha
The race for AGI Script: Sherpa by Pocket FM Video: Seedance 2.5
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One more item: limited to a few country specific appstores, such as US
Here are my first thoughts on Meta Muse as someone who has been using Grok Bot almost exclusively since day 1.
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Astranomical 🤩
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Hmm I thought Claude Max is really 20x on weekly and monthly. Hence all the brag people can do 4k-8k worth of tokens monthly
For clarity, while both are called 20X, in Codex they apply specifically to weekly usage limits. And we also don't have 5h limits for both Pro plans. The Pro 20X is quite precisely 20X the usage of the Plus subscription, so it does exactly what it says on the tin.
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Why is my X feed full of Grok bot hype post. I asked my grok bot and it agrees they are just fluffy hype and sometimes masked self promotions
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But milestone. And friends still ask why i switched to chatgpt =))
It's me again. I come bearing great news. First of all, we have hit 20M active users for Codex some time this week. Second of all, this is cause for celebration and during the day we will credit every Codex and ChatGPT Work user with a BANKED reset that you can use at your own leisure. And we will have some other good news later too! Now, on usage limits draining faster, while we're not seeing anything abnormal, we do take it incredibly seriously and there is an ongoing investigation. I will share if we do find anything and my below post is really a clarification on a specific pattern that we did see that I wanted to call out. Go do something amazing today.
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Underrated comment 🥹
Replying to @satyanadella
OpenAI is going to eat Microsoft alive
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Is it too good to be true?
Introducing Grok 4.6. It delivers frontier intelligence and is a significant improvement over Grok 4.5 at the same price.
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Have you ever met a human who only has good ideas?
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Awesome share. Great repo in thread to fork and learn from
"A new bar for coding." I ran Qwen3.8-Max through my bug bench: two real repos, 105 hidden bugs, 15 runs across 11 frontier models, all judged blind. Final score: 19/105. GPT-5.6 Sol leads at 42. Kimi K3 and Opus 5 fixed 21 at the same effort level. Qwen did fix one bug none of the other ten models found. Just getting it to run took five attempts. One coding agent used up the 5-hour subscription quota in half an hour. The pay-as-you-go key exhausted its free tier, then refused to bill until I opened a different console. About $31 total. Twenty hours after launch, still not on OpenRouter. Let me save you some money and time: - GPT-5.6 Luna ran the same benchmark for $1.80 and fixed 33. - Grok 4.5 fixed 16 in 25 minutes. Fable 5 for judgment. Sol for heavy coding. 2.4T parameters. 148 minutes. 19 bugs.
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A glimpse of the future before chatgpt came out. gpt codex model back in 2022 and its “harness”
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desktop app (codex) of @ChatGPT has become so bad that i really enjoy using chatgpt.com in the browser. chatgpt work FTW and bravos on the cloud browser. but serious, please fix the desktop app
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Must be super popular because it's 500 now. It's a flattering thing! Curious it's a Ruby app? @juanbuis "Change this error message for exceptions thrown outside of an action (like in Dispatcher setups or broken Ruby code) in public/500.html"
Replying to @juanbuis
the system was created by michael chu, for many more check out cookingforengineers.com :)
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You have or look really hard to see The agentic coding benchmark That got 5.6 Sol wins. Grey highlight is a thing?
Replying to @claudeai
On several coding and knowledge work evaluations, Opus 5 is the new state-of-the-art:
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Context engineering is now saner and simpler to manage because models are so smart with judgement
We removed ~80% of the Claude Code system prompt for our newest models, this is what we've learned about writing system prompts, skills and Claude.MDs for them.
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Fable5 steps aside. Welcome Focus 5
Introducing Claude Opus 5. It's a thoughtful and proactive model that comes close to the frontier intelligence of Fable 5 at half the price.
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