Layer 3 is where the economics flip. Retrieval memory costs tokens on every call. The preference gets looked up, injected, re-reasoned — every time. Procedural memory costs zero tokens at inference. The behavior lives in the weights. The agent just acts correctly. At scale,
LLMS
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ChatGPT Images 2.0 Autonomously Added Humorous Sign Text
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Important: it has been confirmed that ChatGPT Images 2.0 added the "Why are you like this" sign of its own accord
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GPT-5.5 Improves Codex Efficiency With Fewer Tokens
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GPT-5.5 uses significantly fewer tokens for the same Codex tasks. In general, you should expect better capability with fewer tokens vs GPT-5.4, not an increase!
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DeepSeek V4 Offers Cheapest Models Near Frontier Performance
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More of my notes on DeepSeek V4 – the really big news is the pricing: both DeepSeek-V4-Flash and DeepSeek-V4-Pro are the cheapest models in their categories while benchmarking close to the frontier models from other providers https://
simonwillison.net/2026/Apr/24/de
epseek-v4/
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DeepSeek launches V4 models on par with GPT-5.4
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DeepSeek released a set of new open-source models from the long-awaited V4 family that perform on par with GPT-5.4 and Opus 4.6. – DeepSeek-V4 Preview
– DeepSeek-V4-Pro
– DeepSeek-V4-Flash V4 models are available on APIs and DeepSeek Chat! Testing time -
ChatGPT’s tone and vibe improved according to users
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is it just me does chatgpt's vibe feels better? Feels like the tone, the vibe changed a bit (for the better). But im not 100% certain.
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DeepSeek-V4 Breakthrough: Massive KV Cache Efficiency Gains
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DeepSeek-V4 just dropped! And it's solving one AI's biggest problem today: It runs 1M-token context at 10% of the KV cache and 27% of the inference FLOPs of V3.2. Here's what that means. KV cache is the memory footprint your GPU holds for every token already in context. It
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Critique of 4o’s Gen-Z personality and improvements in 5.x
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Yeh that rings true to me. Also I always disliked the distinctly gen-z personality of 4o, and 5 felt like 4o’s personality invading o3. I notice this problem less with each successive 5.x release.
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Google Reshapes Search Maps and AI Agents With Reasoning AI
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Google And The Future Of Search, Maps And AI Agents #Google is reshaping #Search, #Maps, and digital assistance around #AI that can reason, personalize results, and increasingly take action, while keeping trust and user control at the center. In this conversation with Google