内存价格一年暴涨500%，2027年DRAM产能被抢空

Even as Sama follows through on the Great Pacing, and Etched becomes a double unicorn and Cerebras announced CS4 running 10T models at 1000 tok/s, the memory shortage has continued unabated since we did our SemiAnalysis pod in Feb.

Per Tom’s Hardware:

We’re officially in dire straits. There’s almost no way, if you’re reading this site, that you aren’t aware that memory prices have become entirely divorced from reality. Some are calling it the RAMpocalypse; I prefer “RAMageddon.”

That’s right: 128GB DDR5 kits are fully ten times more expensive than the lowest price we’ve ever seen.

In fact, the situation is so severe that hyperscale buyers have reportedly already locked in almost all of the global DRAM production capacity for 2027, handing over advance deposits to guarantee their supply of precious DRAM, which is now among the highest-value commodities in the world by weight; mainstream DRAM chips are worth over half as much per kilogram as solid gold.

Put another way, the famous Moore’s Law driving all hardware unit prices down has been reversed for memory:

AI News for 8/17/2026-8/18/2026. We checked 12 subreddits, 544 Twitters and no further Discords. AINews’ website lets you search all past issues. As a reminder, AINews is now a section of Latent Space. You can opt in/out of email frequencies!

AI Twitter Recap

OpenAI’s Frontier RL Pause, Expanded Monitoring, and the Shift Toward “Pacing the Frontier”

• OpenAI slowed frontier training to harden security and alignment controls: The day’s biggest systems/safety development was OpenAI saying it paused some frontier RL training for two weeks and is still holding its largest planned frontier RL run while it strengthens monitoring, isolation, and red-teaming. Sam Altman framed this as a case where capabilities were outpacing safety/alignment readiness, while Greg Brockman emphasized that confidence in safety will increasingly set the pace of frontier scaling. OpenAI also clarified the slowdown mainly affects farther-out releases, not models already near ship.
• Concrete controls matter more than broad messaging: OpenAI shared more implementation detail than usual, including stronger workload/network isolation, continuous security testing, and multistage monitoring. Secondary commentary highlighted interesting operational details: monitoring may add roughly 20% overhead, sampled-token monitoring can page safety/security/research teams within ~30 minutes, and tool-using inference for higher-risk systems may ship with active monitors attached, per @eliebakouch. Whatever one thinks of the policy framing, this is notable as a public admission that training/eval infra and inference-time monitors are now bottlenecks on frontier progress, not just raw compute.

Open Models: Qwen3.8-27B Momentum, GLM-5.3’s Post-Training Gains, and the Small-Model Debate

• Qwen3.8-27B became the focal point of the local/open model conversation: Several posts cast Qwen3.8-27B as a new “locally runnable frontier-ish” moment, with @kimmonismus calling it a “DeepSeek moment” and Alibaba Qwen celebrating it reaching #1 local model in Cline in four days. Benchmarks cited in the thread include #7 on Artificial Analysis’ Agentic Index at 27B, #6 among open-weight models on Vals Index v2 and #1 on Harvey’s legal benchmark among open weights, and Cline’s own ranking as its new top local model. The pushback was equally strong: @scaling01 argued benchmark wins are overstated versus Opus 4.5 in real coding use, underscoring the growing divide between bench success, cost efficiency, and qualitative reliability on long tasks.
• Safety implications of capable local models are getting harder to dismiss: A high-engagement post from @kimmonismus noted a “refusal-removed” MLX build of Qwen3.8-27B running locally on Apple Silicon in 2/4/6/8-bit variants, claiming preserved vision, reasoning, tool use, and 262K context with near-zero refusals. Independent of the rhetoric, this is the clearest thread in the set pointing to a real shift: useful, locally deployable, partially uncensored models are no longer hypothetical.
• GLM-5.3 looks like a post-training/infrastructure story, not a base-model story: Z.ai launched GLM-5.3 via API for coding, defensive cyber, and long-horizon agents, at the same price as GLM-5.2. Artificial Analysis reported it ties Kimi K3 at 60 on its Intelligence Index, with a 246-point jump on GDPval-AA v2 to 1770 Elo, while keeping the same 753B total / 40B active MoE footprint, 1M context, and MIT license once weights land. The most technically interesting interpretation came from a long Zhihu summary relayed by @ZhihuFrontier: GLM-5.3’s gains appear driven by stronger post-training, especially asynchronous RL (SAO), executable sandbox training, and on-policy distillation to prevent catastrophic forgetting. If true, this is a meaningful data point for the idea that agentic capability scaling is shifting from parameter count toward RL systems + environment quality.

Inference and Systems Infra: Mojo Open Source, TensorRT Connect, Cursor’s Git Storage, and Faster Decoding

• Mojo is now open source under Apache 2.0: Modular’s announcement drew broad attention, with the company formally open-sourcing Mojo and also positioning its broader platform as a portability layer across accelerators, including Qualcomm datacenter AI accelerators. For infra engineers, the significance is less “new language hype” than toolchain openness plus hardware abstraction arriving together.
• NVIDIA compressed model-to-TensorRT deployment to “two commands”: NVIDIA launched TensorRT Model Connect in public preview, promising direct conversion from supported Hugging Face models to end-to-end TensorRT inference without intermediate ONNX export, with output deployable via native C++ APIs. The post also claims the project itself was largely built with Codex agents under human review, which is noteworthy less as marketing than as another signal that infra/tooling teams are now willing to say agent assistance touched implementations, tuning, tests, integrations, and docs.
• Cursor published a strong infra retrospective on Git hosting at scale: The standout systems post by engagement was Cursor’s writeup on designing Git storage “as if it were a database”. This is adjacent to AI rather than model-specific, but highly relevant for anyone building coding-agent backends: as agents amplify repo churn, background automation, and branch/session proliferation, Git hosting becomes a core AI infra dependency rather than a generic devops primitive.
• Fast decoding and accelerator claims kept escalating: On-device inference got a notable boost with DFlash 2 claiming Qwen3.8-27B at 70 tok/s on an M5 Max, up to 4.6× autoregressive decoding “with the same output.” On the datacenter side, Cerebras announced CS-4, with follow-on claims around 10T models at 1000 tok/s, ~1300 tok/s for GPT-5.6 Sol, and up to 10× higher throughput per MW. Even allowing for vendor framing, the throughline is clear: inference speed is becoming product UX, economics, and national-competitiveness policy all at once.

Agent Harnesses, Evals, and Production Feedback Loops

• Miles v0.1 is a serious new OSS RL stack for LLMs and multimodal models: @radixark announced Miles, an open-source RL framework built over 9 months, with 72 contributors, 1,326 commits, and 85 GPU E2E CI tests, reportedly battle-tested on models including Kimi K3, DeepSeek V4, Qwen 3.8, GLM 5.2, Inkling, and MiniMax H3. The pitch is practical: getting RL runs started is easy, but debugging correctness, utilization, and scale is the real bottleneck. This fits the broader theme of the day: the frontier is shifting from “who has PPO/GRPO” to who has robust rollouts, CI, observability, and environment plumbing.