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#routing

13 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
Line chart of the cost of one request against prompt size from 0 to 1M tokens, 8K output, with GPT-6 Sol at its default caching setting. Grok 4.7 (yellow) jumps at 200K and ends at its 500K context window; GPT-6 Sol (grey) jumps at 272K and runs above the others from there; Claude Opus 5.5 (white) rises in a straight line with no step.

What a 250K prompt costs on Grok 4.7, GPT-6 Sol and Opus 5.5: the 200K and 272K price cliffs

Leo Kaka
DeepSeek's official chart of global KV cache bytes per token across generations: V1 389,120, V3.2 48,068, V4-Flash 3,514, V4.1-Flash 890, the reason the vendor gives for the Flash price coming down

DeepSeek V4.1 Flash price cut: 9% to 57% depending on your token mix, and the deepseek-v4-pro switch DeepSeek later reversed

Leo Kaka
Two identical grey machines on a workbench, each hung with a blank price tag; the brass utility meters beneath them read very differently, and a single yellow line feeds only the higher one.

GPT-6 Astra vs Claude Fable 5.1: same $10/$50, and a 39% cheaper agent bill

Leo Kaka
Hand-drawn ink illustration: three different objects in a row, each delivering water into the same glass. A plumbed-in public drinking fountain on the left; a hand-built rig of copper pipe, valves and a pump on a wooden crate in the middle, its workings exposed with a toolbox beside it; a sealed brass cabinet on the right whose side hatch is open while a hand fits a yellow cartridge into it.

OpenRouter vs LiteLLM vs Portkey: three different products, and the seven questions that pick one

Leo Kaka
Timeline of the SpaceX–Cursor deal and OpenAI's response: 21 April option announced, 14 August acquisition completed, 28 August notice given, 12 November proposed shutoff

Cursor loses OpenAI models on November 12: the change-of-control clause behind the date, and the five questions to ask whoever holds your key

Leo Kaka
Matrix of seven protocol dimensions across OpenAI Chat Completions, Anthropic Messages and Gemini generateContent, with the field name each vendor uses

One API for OpenAI, Anthropic and Google models: what translates, and the seven things that leak through

Leo Kaka
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
GLM-5.3 launch benchmark chart — one of the two time-of-day pricing moves this month rode in alongside these bars

DeepSeek peak pricing: which 30% of your bill can move

Leo Kaka
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