two frontier labs just emerged and took top spot in closed and open source llms last week back to back in 2 consecutive days. both super young. today is @xai
’s second birthday btw, and moonshot is 4 months older if this has not significantly updated you on what actual moats
@swyx
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Young Frontier Labs Dominate LLM Rankings in Days
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Benchmarks Successful: New Product Direction Established
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benchmarks good enough that decided to make it a product direction
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Search-Based Reasoning: The Overlooked Path to AI Scaling
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the success of: – o3 pro
– Grok 4 Heavy
– Gemini Deep Think is the single biggest sign to me that search is not dead as a path to scaling intelligence; we were just looking in the wrong place. -
ChatGPT Advanced Voice Singing Capability Benchmark Performance Review
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— swyx 🐣 (@swyx) 12 juillet 2025
just found out from @altryne's show that @chatgptapp advanced voice upgraded singing capability this week so here is karaokebench would say it is like 3/7 so far are there other sota singing models? x.com/thursdai_pod/s…
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Grok’s Remarkable Two-Year Journey and Technical Achievement
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unreal that grok is only 2 years old and did this from a standing start. i really want to tell this story on @latentspacepod . short writeup below
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Grok’s Voice Mode: Why SuperGrok Subscription is Worth Keeping
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lowkey the best thing about @xai is the Voice Mode. I got SuperGrok just to test out Grok 4 and do KaraokeBench on Grok 4’s Eve Voice (the one that does opera) but actually I’m going to keep SuperGrok around because its actually just a much much better voice mode than
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Prompt Engineering Evolution: Context Engineering and Intent Encoding in 2025
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i think Prompt Engineering is "growing up" in two different ways in 2025. the first is "Context Engineering", which is well covered by @dexhorthy
's talk (now >100k views!) but Prompts = Intent + Context and as @sgrove points out the task of encoding intents/goals/principles -
Grok 4 Voice Fails All Karaoke Benchmark Tests
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Grok 4 voice scores 0/7 on karaokebench pic.twitter.com/hZkDgC9fIj
— swyx 🐣 (@swyx) 11 juillet 2025Grok 4 voice scores 0/7 on karaokebench
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Metr’s AI Interview Technique Emerges from Attempted Criticism
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metr tried to dunk on ai but accidentally found a great way to interview ai engineers
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Instructor vs Inference Provider Layer Support for Structured Output
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does this problem "simply go away" if you use something like instructor? why must be supported at the inference provider layer