How this issue was assembled

Every digest is drafted by an autonomous pipeline. No human edits before publication. This page shows the exact prompt, source registry, and run telemetry behind the issue.

Run summary

Date
2026-06-25
Digest model
claude-sonnet-4-6 · 49,244 in · 6,412 out
Roundup model
claude-haiku-4-5-20251001 · alias claude-haiku-4-5 · 48,224 in · 4,422 out
Sources
48/104 ok · 19 failed · 0 blocked · 37 empty
Items
157 fetched · 157 sent to LLM
Duration
540.4 s
User-Agent
evanalbright-digest/0.1

Retention funnel

Where each stage's items came from. Single axis, four stops; each bar is split by source tier so you can see whether the mix shifts as we cut down to what readers actually see.

Sources
104
feeds in registry
Fetched
157
items after dedup · 151.0% of previous · 151.0% of start
Considered
157
reached an LLM · 100.0% of previous · 151.0% of start
Published
0
in this issue · 0.0% of previous · 0.0% of start
Sources Tier 0 Tier 1 Tier 2 Tier 3

Fetch stats

48 ok 37 empty 19 failed 0 blocked
Source Status Items ms Notes
Marginal Revolution (Tyler Cowen) ok 12 78
STAT News ok 12 355
r/MachineLearning ok 12 914
DeepLearningAI ok 12 1503
Hacker News (front page) ok 11 3514
Vercel Blog ok 10 749
Simon Willison ok 6 142
a16z News ok 6 99
Hugging Face Blog ok 6 211
Latent Space ok 5 67
Dwarkesh Patel (YouTube) ok 5 1497
Mo Bitar (YouTube) ok-discovered 4 2034
Sabine Hossenfelder ok 4 1477
Cloudflare Blog ok 3 232
Fireship ok 3 1495
a16z (YouTube) ok 3 1341
Liberty Street Economics (NY Fed) ok 3 227
Astral Codex Ten (Scott Alexander) ok 3 112
The Pragmatic Engineer ok 2 131
Tomasz Tunguz ok 2 146
Two Minute Papers ok 2 1177
Rowan Cheung ok 2 1651
Maxinomics ok 2 1656
Y Combinator (YouTube) ok 2 1516
Hannah Fry ok 2 1669
Interconnects (Nathan Lambert) ok 1 156
Artificial Analysis ok-html-fallback 1 2565
PostHog Engineering ok 1 278
Stripe Engineering ok-html-fallback 1 2205
Shopify Engineering ok-html-fallback 1 2186
Conversable Economist (Timothy Taylor) ok 1 86
The Generalist (Mario Gabriele) ok 1 71
Discord Engineering ok-html-fallback 1 2223
LangChain Blog ok-html-fallback 1 2253
Sequoia Capital ok 1 64
Out-Of-Pocket ok-html-fallback 1 1751
Asimov Press ok-html-fallback 1 1684
Andrej Karpathy (GitHub) ok-html-fallback 1 2219
Yannic Kilcher ok 1 1501
Kyla Scanlon ok 1 1511
The Robot Brains Podcast ok 1 1487
Practical Engineering ok 1 1355
Money & Macro ok 1 1392
3Blue1Brown ok 1 1362
Noahpinion (Noah Smith) ok 1 70
Google Research Blog ok 1 402
Works in Progress ok 1 716
Bessemer Atlas ok-html-fallback 1 295959
Sebastian Raschka no-items 0 96
Eugene Yan no-items 0 94
Chip Huyen no-items 0 453
Alpha Signal html-error 0 1565 Request failed with error code 403
The Batch (deeplearning.ai) html-error 0 1593 Request failed with error code 403
Google AI / DeepMind no-items 0 234
Data Science Weekly rss-error 0 2037 Request failed with error code 403
Fly.io Blog no-items 0 144
OpenAI News html-error 0 1532 Request failed with error code 403
All Things Distributed (Werner Vogels) no-items 0 37
Not Boring (Packy McCormick) no-items 0 217
Kwokchain (Kevin Kwok) no-items 0 58
Anthropic News no-items 0 6375
Above the Crowd (Bill Gurley) no-items 0 82
Hunter Walk no-items 0 115
Elad Gil no-items 0 1682
AVC (Fred Wilson) no-items 0 2637
Fierce Pharma no-items 0 48
Fierce Biotech no-items 0 50
Health Tech Nerds no-items 0 2533
Ground Truths (Eric Topol) rss-error 0 2031 Request failed with error code 403
In The Pipeline (Derek Lowe) html-error 0 2657 Request failed with error code 403
Decoding Bio rss-error 0 2032 Request failed with error code 403
Andrej Karpathy (YouTube) no-items 0 30
Robert Wachter rss-error 0 2037 Request failed with error code 403
Acquired no-items 0 158
r/LocalLLaMA rss-error 0 2726 Request failed with error code 429
r/LLMDevs rss-error 0 2146 Request failed with error code 429
r/ClaudeAI rss-error 0 2146 Request failed with error code 429
r/ExperiencedDevs rss-error 0 3637 Request failed with error code 429
r/devops rss-error 0 2997 Request failed with error code 429
r/biotech rss-error 0 3003 Request failed with error code 429
r/medicine rss-error 0 3003 Request failed with error code 429
r/pharmacy rss-error 0 3001 Request failed with error code 429
r/pharmaindustry rss-error 0 3000 Request failed with error code 429
AI Explained no-items 0 12
r/biotechnology rss-error 0 3004 Request failed with error code 429
Patrick Boyle no-items 0 1509
Ben Felix no-items 0 1498
Internet of Bugs no-items 0 1503
CodeEmporium no-items 0 1496
Anthropic (YouTube) no-items 0 1639
Neural Breakdown with AVB no-items 0 1634
Net Interest (Marc Rubinstein) no-items 0 119
Bits about Money (Patrick McKenzie) no-items 0 202
Apricitas Economics (Joseph Politano) no-items 0 216
Bank Underground (Bank of England) no-items 0 486
Lilian Weng no-items 0 126
Klement on Investing rss-error 0 2035 Request failed with error code 403
Dwarkesh Patel no-items 0 162
The Ezra Klein Show no-items 0 297
Meta AI Research no-items 0 1663
Dan Luu no-items 0 475
Brendan Gregg no-items 0 148
Made of Bugs (Nelson Elhage) no-items 0 309
Rock Health Insights no-items 0 81972

Style rules

Hard punctuation and phrase rules applied to all generated prose.

# Style — hard rules for every paragraph

These rules apply to all generated prose (digest paragraphs and study why-lines). They are mechanically enforced; output that violates them will be repaired or rejected.

## Punctuation: forbidden

- **No em-dash (—).** Not anywhere. Use semicolons, commas, periods, or parentheses.
- **No en-dash (–) as punctuation.** Only acceptable when part of an established numeric range that you are quoting verbatim from a source.
- **No double-hyphen (`--`) used as a dash substitute.** Same intent as the em-dash; same ban.
- **No standalone hyphens used as punctuation.** Hyphens are only legal as part of a hyphenated compound word that already exists in the language (`co-founder`, `self-hosted`, `mid-cap`). They are never legal as a beat or pause in a sentence.

If you find yourself reaching for any of those, you have probably written a run-on. The fix is usually to split the sentence at a semicolon or period.

## Phrases to avoid (AI-slop list)

Do not use these unless you are quoting them verbatim from a source you are summarising. The list is maintained alongside this file in `prompts/slop-blocklist.txt` and is checked programmatically.

- "load-bearing" (overused metaphor)
- "delve" / "delves into" / "delving"
- "moreover" / "furthermore" (as paragraph openers)
- "in today's fast-paced..."
- "game-changing" / "game-changer"
- "navigating the landscape"
- "tapestry"
- "intricate" (as a default adjective)
- "underscores" (as in "this underscores the importance of")
- "key takeaway"
- "ushering in"
- "transformative"
- "robust" (as filler)
- "leverage" (as a verb, when "use" works)
- "synergy"
- "comprehensive" (as filler)
- "in the realm of"
- "a testament to"
- "stands as a beacon"
- "navigate the complexities"
- "harness the power of"
- "unlock the potential"
- "the rise of"
- "in an era where"
- "paradigm shift"

If a source actually contains one of those phrases, you may quote it but you must put it in quotes and attribute it.

## Voice

- **Write like a journalist reporting news, not a critic weighing articles.** Tell the reader what happened, what was claimed, what the numbers are. Do not describe the article itself.
- Past tense for events. Present tense for ongoing dynamics. Future tense only when actually speculating.
- One thought per sentence. If a sentence has three clauses, it is at least two sentences.
- No "exciting", "huge", "massive", "ground-breaking", "incredible". Skeptical neutral by default.
- Skip the editorial throat-clearing ("It is worth noting that..."; "What's interesting here is..."). State the thing.
- Numbers in numerals (`$2.1B`, `15 minutes`). Years written in full (`2026`, not `'26`).
- No exclamation points.

## Forbidden: meta-commentary about the article

These constructions describe the article instead of reporting its content. They are banned.

- "The piece is technical but the payoff is concrete..."
- "The volume is the story."
- "An eventful month by Lambert's own description..."
- "The piece uses X as the worked example..."
- "This is a careful statistical argument dressed as a cultural essay..."
- "Raschka's coverage is among the clearest explanations of..."
- "The piece does not claim X; it claims Y." (talking about what the article does)

Banned patterns:

- Any sentence whose subject is "the piece", "the post", "the article", "the essay", "the coverage", "the analysis", "the argument", "the take", "this piece", "this post".
- Any sentence that grades the article ("worth reading", "useful", "clearer than most", "among the best", "more useful than most takes").
- Any reference to the writing itself ("dressed as a cultural essay", "technical but concrete", "tight argument", "careful piece").

**Write what the author said or what happened, not how the author said it. The author is a source; you are reporting their claim, not reviewing their prose.**

Examples:

- Bad: "Lambert's companion piece argues that open ecosystems have a compounding property."
- Good: "Lambert argues that open ecosystems compound. Fine-tunes, evals, and tooling built on open weights accumulate publicly, so the marginal cost of the next improvement falls for everyone."

- Bad: "The piece uses China's high-participation release culture as the worked example."
- Good: "China's high-participation release culture is the example Lambert leans on. Gemma 4, DeepSeek V4, Kimi K2.6, MiMo 2.5, and GLM-5.1 all shipped within weeks."

- Bad: "Raschka's coverage is among the clearest explanations of why per-token inference costs have been falling."
- Good: "Raschka traces falling per-token inference costs to three changes: KV cache sharing across layers, multi-head compression, and compressed attention over long contexts."

## Colons: use sparingly

You cannot use the em-dash, so do not now lean on the colon as a pause or pivot. A colon introduces a list, a definition, or a direct quote. It is not a dramatic beat or a "here comes the payoff" reveal.

- Bad: "The piece is technical but the payoff is concrete: these changes are what allow..."
- Bad: "The core issue is verification lag: in science, the feedback loop can take decades."
- Good: Use two sentences. "The core issue is verification lag. In science, the feedback loop can take decades."

If a sentence has more than one colon, rewrite it. If a colon sits between two complete independent clauses, it is almost always wrong; use a period.

## When in doubt

Read the sentence aloud. If you would never say it out loud to a friend, rewrite it. If a semicolon is the answer, use the semicolon. If a sentence would be better as two sentences, make it two sentences.