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Linden Kern

15 articles

Two different sorting machines deliver the same choice, with different costs and ownership

Jev vs GLM-5.3-Flash: similar accuracy, very different reasons to choose either

Linden Kern
Two labeled panels separate repeatable coding and document work from difficult research tasks that need a separate evaluation; this is not a benchmark chart.

GPT-6.1 Sol vs Astra: move the testable work, keep the hard calls

Linden Kern
Separate vendor task savings and independent max-effort Index cost measurements appear in two independent panels, not on one axis.

Claude Sonnet 5.5 task cost: why 30% less and 50% more describe different tests

Linden Kern
One machine whose left half is a plain casing and right half a dense tangle of gears; a clipboard on each side, one marked with a check and one with a cross.

Is GPT-6 Astra worth $10/$50? Two evals disagree, and both are right

Linden Kern
Data card on a dark field: the figure 0 of 450, labelled as the number of ChatGPT runs across six snapshots from 24 August to 2 September 2026 that cited pirouter.ai, beside six small bars showing the share of each snapshot's citations taken by three competitors' own documentation domains, between 34.9 and 40.6 percent

How do Perplexity and ChatGPT decide which sources to cite? AI citations measured over 450 runs and two audits: documentation-shaped pages win

Linden Kern
Hand-drawn ink illustration: one grey machine with two doors cut into the same body. The left door stands open and a few figures walk through it into a lit corridor; the right door is closed, fitted with a brass turnstile and a card reader, and through its window the same corridor is visible. One figure waits at the right door holding a yellow card.

Astra's "Critical" cyber threshold, Mythos 5.1 and Gemini 3.8 Flash Cyber: one model, two safety tiers, and API access is now a spec-sheet line

Linden Kern
Dumbbell chart of bartowski's Nemotron-3.5-Lightning GGUF files: bits per weight the filename claims against bits per weight measured from the tensor table, every k- and i-quant rung landing at or above a 4.5 bpw floor

Why your IQ2 GGUF is the same size as IQ4: the 256-block fallback in llama-quantize

Linden Kern
Matrix of GLM-5.3's sixteen OpenRouter endpoints on 2026-08-29 05:24 UTC, grouped by self-declared quantization: bf16 one host at $1.20/$4.00, fp8 seven hosts at $1.25–1.40 in, fp4 two hosts at $1.40/$4.40, unknown six hosts at $1.40/$4.40

GLM-5.3 open weights, day one: 16 providers, five prices, four quantizations — and BF16 is the cheapest

Linden Kern
Four-stage diagram for Kimi K3: 2.8T weights free to download → host needs 8× GB300 or more → reported revenue share of up to 30% → token auditing unresolved. Below it, the three license thresholds: $20M over 12 months, 100M MAU or $20M a month, internal use and certified partners exempt

Kimi K3 license, commercial use: the $20M MaaS clause, the 100M-MAU badge, and the 30% Moonshot wants from Azure, AWS and Google

Linden Kern
Hand-drawn illustration: an open-air bazaar of model makers' stalls; at the gate a brass shovel-maker's cart has parked while a porter ties a single yellow reservation ribbon to the gatepost

Nvidia in talks to buy Hugging Face: the investor refused in January is the buyer in August

Linden Kern
Timeline of two distribution-layer deals in 2026: Hugging Face declines Nvidia's $500M at a $7B valuation in January, OpenRouter announces it is joining Stripe on 19 August, Hugging Face is reported exploring a sale at $13B or more on 23 August

Hugging Face said no to one dominant investor. Eight months later it is exploring a sale

Linden Kern
Bar chart of top-1 token flips against the BF16 reference at 88k context: INT8 about 15 percent, official FP8 about 20 percent highlighted, AWQ W4A16 about 30 percent, NVFP4 about 50 percent

FP8 flips 20% of top-1 tokens, and tool calls break first

Linden Kern
Unsloth's Qwen3.8-27B GGUF chart: top-1% accuracy against file size for four quantization providers

Qwen3.8-27B: seven endpoints, one name, two prices

Linden Kern
Cover card: A price sheet, and a model with no name

ox-alpha vs deepseek-v4-flash: what a stealth model hides

Linden Kern
The source post-mortem's cover art: server racks trading cables in the dark (The Daily Brief)

Routers aren't dead — per-request routing is

Linden Kern