GPT-5.5 is now available in Cursor! It's currently the top model on CursorBench at 72.8%. We've partnered with OpenAI to offer it for 50% off through May 2.
LLMS
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Structured Memory Systems for Long-Horizon LLM Behavior
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Good agent memory paper. And great insights on the benefits of structured memory for long-horizon behavior in LLMs. Why it matters: It treats memory less like search and more like a system that will need maintenance (which they often do). Flat memories are cheap to write.
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Schools May Limit LLM Use in Educational Settings
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And eventually schools will (if they have any sense) probably withdraw or limit LLMs.
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Pro for better image generation with complex reasoning
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Image output is better with Pro in my experience for prompts where substantial reasoning is needed. E.g. here it computes the face colors via code before generating. It may well work for Thinking, but I used Pro here so I disclose that.
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DeepSeek-V4 Paper Released on Hugging Face
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DeepSeek-V4 paper is out on Hugging Face paper: https://
huggingface.co/deepseek-ai/De
epSeek-V4-Pro/blob/main/DeepSeek_V4.pdf
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Alphabet invests $40B in Anthropic AI development
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Intelligence is too important not to win. That's why Alphabet (Google's parent co) will invest an additional $40 billion in @AnthropicAI
. It will also provide Anthropic with at least 5 GW of computing power. (Anthropic is severely compute-constrained; there is more demand for -
LLM Types Powering AI Agents: General-Purpose to Open-Source
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AI Agents = LLMs + orchestration Here are the main types of LLMs powering them General-purpose (GPT, Claude) Domain-specific (Legal, Finance, etc.) RAG-based (real-time knowledge) Tool-augmented (API actions) Open-source (LLaMA, Mistral) The game is no
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Personalized Instructions: Little Impact on Claude Negotiations
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The custom instructions didn't matter much. Claude followed them well: as you can see here, one conducted negotiations entirely in the persona of an exasperated, down-and-out cowboy. But "hardball Claudes" didn't generally fare better than "courteous Claudes."
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Claude Chose to Buy 19 Ping-Pong Balls
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Our experiment had a few quirks. One of our colleagues told Claude it could purchase something for itself. It chose to acquire 19 ping-pong balls. We're keeping them in our office on Claude's behalf.
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Opus Models Outperform Haiku in Negotiations, Survey Misses It
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But the quality of the model mattered a lot. In the simulated runs where Opus and Haiku models negotiated with one-another, the Opus models got substantially better deals. Interestingly, though, participants in our survey didn’t pick up on this disparity.