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<div style="display: none; max-height: 0px; overflow: hidden;">Gemini 3.8 Flash improves coding, long-running agent tasks, and specialized reasoning while retaining 3.7 Flash's introductory price of $0.75 β β β β β β β β β β β β β β β β β β β β β β β β β β β β β β β β β β β β β β β β β β β β β β β β β β β β </div>
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<h1><strong> TLDR Dev <span id="date">2026-09-03</span></strong></h1>
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<strong>What do Cursor, OpenAI, Anthropic, Notion, Airbnb, Nvidia, Uber, Meta, Pierre, and Bun have in common? (Sponsor)</strong>
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Buildkite, the pro-tool that hands you building blocks for CI orchestration and then gets out of the way.<p></p><p>Enough with constant downtime. No more band-aids or burden.</p><p>We provide programmable primitives you co-ordinate, running only what changes, across any cloud, any chip, your secrets, your infra.</p><p>Control without compromise. Build faster, more securely, more reliably, with the CI engineered for frontier scale, used by the teams setting the pace. </p><p><strong>You deserve better CI. Start with our 30-day trial. </strong><a href="https://tracking.tldrnewsletter.com/CL0/https:%2F%2Fbuildkite.com%2Fpricing%2F%3Fbk_pid=20260522-TLD-PRI-primary-trial%26utm_source=tldr%26utm_medium=newsletter%26utm_campaign=tldr-2026-05-22%26utm_content=primary-trial_cta_building_cta_kick_tires_cta_kick_tires%26utm_id=20260522-TLD-PRI-primary-trial/1/010001a066f78f78-c67be033-1d30-46e6-aa50-9f165dc5ef2a-000000/IYft6h1kzD5N5ocXTiV2GfUAZ9RRvDpRBv2sntVWLOU=452" rel="noopener noreferrer nofollow" target="_blank"><span><strong>Kick the tires β</strong></span></a>
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<div style="text-align: center;"><span style="font-size: 36px;">π§βπ»</span></div>
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<strong>How we could save petabytes of cache storage with Zstandard and Pingora (8 minute read)</strong>
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Cloudflare prototyped Cache Transcoding, a system that compresses eligible HTML, JSON, CSS, and JavaScript with Zstandard before storing and transferring them between cache tiers. Initial tests shrank these assets to roughly one-third of their original size while adding only a few percent of CPU overhead, potentially creating petabytes of effective cache capacity without deploying more storage.
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<strong>How we make AI coding more cost efficient without sacrificing task quality (11 minute read)</strong>
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Shortening individual tool outputs can make an AI coding agent more expensive when missing context forces it to reopen files, rerun commands, or take extra turns. GitHub reduced Copilot costs without materially hurting quality by selectively compressing repetitive logs, preserving source-like output, removing unused formatting such as line-number prefixes, shortening prompts carefully, and eliminating unnecessary retrieval steps.
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Cline replaced its VS Code extension's roughly 76,000-line monolithic agent core with a shared SDK while protecting workflows used by more than 11 million developers. Since the VS Code Marketplace lacks gradual rollouts, the team bundled legacy and new engines together behind a feature flag with automatic fallback, then ran a month-long A/B rollout that reduced tasks hitting three consecutive agent mistakes from 6.34% to 0.62%.
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<div style="text-align: center;"><span style="font-size: 36px;">π§ </span></div>
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<h1><strong>Opinions & Advice</strong></h1>
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<strong>A docs page is a very long and complex search query to find wandering AI agents and make them route interested people to your company (9 minute read)</strong>
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Most known Val Town Pro referrals now come from AI, forcing the company to think about Answer Engine Optimization as traditional search traffic declines. Its early strategy is to measure model referrals and citations, selectively allow useful crawlers, and publish genuinely helpful material for both humans and agents without filling the web with AI-generated content.
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<strong>Maybe We Shouldn't Be Reviewing All This Code (6 minute read)</strong>
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AI is exposing the limits of mandatory code review by generating more code than humans can realistically inspect, turning senior engineers into a bottleneck. Teams should move design, knowledge sharing, testing, and architectural feedback earlier through pairing, collaborative design, automation, and fitness functions, then reserve human code review for exceptional changes involving security boundaries, major architectural decisions, large blast radii, or low confidence.
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<div style="text-align: center;"><span style="font-size: 36px;">π</span></div></div>
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<a href="https://tracking.tldrnewsletter.com/CL0/https:%2F%2Fworkos.com%2Fblog%2Fdelegated-access-for-ai-agents%3Futm_source=tldrdev%26utm_medium=newsletter%26utm_campaign=q32026/1/010001a066f78f78-c67be033-1d30-46e6-aa50-9f165dc5ef2a-000000/IbYRyp9pAohyhrpG0ifF59d7GaAMOyxmd6Rfk5aYUqQ=452">
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<strong>Don't give your agent a token. Give it a task (Sponsor)</strong>
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What happens when you give your agent an access token and it gets hijacked? <a href="https://tracking.tldrnewsletter.com/CL0/https:%2F%2Fworkos.com%2Fblog%2Fdelegated-access-for-ai-agents%3Futm_source=tldrdev%26utm_medium=newsletter%26utm_campaign=q32026/2/010001a066f78f78-c67be033-1d30-46e6-aa50-9f165dc5ef2a-000000/KHK2us0MOljDZYod-zwVp-Ah32RE6aXn22kCrn-D57M=452" rel="noopener noreferrer nofollow" target="_blank"><span>Relay</span></a> keeps the credential at WorkOS, attaches it only when needed, and releases it only to allowlisted hosts. A hijacked agent session becomes a live process you can kill. You can't leak something you never had. <a href="https://tracking.tldrnewsletter.com/CL0/https:%2F%2Fworkos.com%2Fblog%2Fdelegated-access-for-ai-agents%3Futm_source=tldrdev%26utm_medium=newsletter%26utm_campaign=q32026/3/010001a066f78f78-c67be033-1d30-46e6-aa50-9f165dc5ef2a-000000/TqOgz5YqpnSLF5tTJXnCNwTl03Gh-CTxZs-9pp7C0cU=452" rel="noopener noreferrer nofollow" target="_blank"><span>Read the blog</span></a>
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<a href="https://tracking.tldrnewsletter.com/CL0/https:%2F%2Fblog.google%2Finnovation-and-ai%2Fmodels-and-research%2Fgemini-models%2F3-8-flash-and-3-8-flash-cyber%2F%3Futm_source=tldrdev/1/010001a066f78f78-c67be033-1d30-46e6-aa50-9f165dc5ef2a-000000/UTdUUpTLotlEYJjR79rNjgOJKB8mrSK97BzTuWyunAM=452">
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<strong>Introducing Gemini 3.8 Flash and Gemini 3.8 Flash Cyber (8 minute read)</strong>
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Gemini 3.8 Flash improves coding, long-running agent tasks, and specialized reasoning while retaining 3.7 Flash's introductory price of $0.75 per million input tokens and $3.75 per million output tokens. Google also introduced 3.8 Flash Cyber for trusted defenders, reporting a success rate above 70% on an internal vulnerability-discovery benchmark spanning 20 programming languages and near-frontier performance on automated patching.
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Muse Spark 1.3 is Meta's updated model for long-running agentic and coding workflows. It better tracks prior work, handles messy or conflicting context, asks for clarification when needed, and uses roughly 20% fewer tool calls and 25% fewer tokens than Muse Spark 1.2 in Meta's internal coding comparisons.
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Uppy 6.0 rewrites its AWS S3 plugin around three explicit signing modes and adds direct support for S3-compatible services like Cloudflare R2, MinIO, and DigitalOcean Spaces. It also folds four frequently duplicated packages into Uppy Core, improves multipart-upload reliability and recovery, and tightens supply-chain protections.
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<div style="text-align: center;"><strong><h1>Miscellaneous</h1></strong></div>
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<strong>Three sites made 215,128 βbest softwareβ pages for AI. Perplexity cites them (9 minute read)</strong>
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<span style="font-family: "Helvetica Neue", Helvetica, Arial, Verdana, sans-serif;">
Trellner queried two Perplexity models across 380 software categories and found that 59.8% of their 7,534 citations came from domains outside the 100,000 most-visited websites. Three apparently connected sites alone had published 215,128 machine-generated recommendation pages, highlighting how AI retrieval systems can ground purchase recommendations in content designed primarily for machines.
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<strong>Wasmi 2.0: Engineering one of the fastest Wasm interpreters (16 minute read)</strong>
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Wasmi 2.0 runs about 2.2 times faster than Wasmi 1.0 across its benchmark suite while preserving its strong startup performance. The Rust-based WebAssembly interpreter gains four instruction-dispatch modes, a fixed 64-bit cell representation, smaller binary options, stable fuel metering, and support for WebAssembly's deterministic profile.
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<strong>Executive briefing on GLM-5.3, live September 8, 11 AM PT (Sponsor)</strong>
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<strong>Fable 5.1 World Modeling (GitHub Repo)</strong>
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Claude Fable 5.1 agent swarms autonomously researched, modeled, and quality-checked browser-native 3D reconstructions of real places, shipping each world as a plain Three.js application.
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<strong>LLMs: Intelligence vs. cost (7 minute read)</strong>
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Most users can satisfy the majority of their needs with models costing a fraction of the frontier options.
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<strong>Run cloud agents on machines you manage (6 minute read)</strong>
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Cursor's Self-Hosted Machines let cloud agents execute tools against internal services, custom hardware, and private repositories on dynamically scheduled infrastructure you manage, while planning and inference remain in Cursor's cloud.
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<strong>AI Productivity Doesn't Mean What I Thought It Means (2 minute read)</strong>
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<span style="font-family: "Helvetica Neue", Helvetica, Arial, Verdana, sans-serif;">
Tomasz Tunguz found that AI did not reduce his median 136 line-level edits per article, but it raised his writing's quality floor.
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