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
2026-06-18
Digest model
claude-sonnet-4-6 · 50,536 in · 6,567 out
Roundup model
claude-haiku-4-5-20251001 · alias claude-haiku-4-5 · 49,043 in · 7,361 out
Sources
51/104 ok · 18 failed · 0 blocked · 35 empty
Items
180 fetched · 180 sent to LLM
Duration
332.0 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
180
items after dedup · 173.1% of previous · 173.1% of start
Considered
180
reached an LLM · 100.0% of previous · 173.1% 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

51 ok 35 empty 18 failed 0 blocked
Source Status Items ms Notes
Simon Willison ok 12 144
Vercel Blog ok 12 1102
Marginal Revolution (Tyler Cowen) ok 12 242
STAT News ok 12 150
r/MachineLearning ok 12 686
Dwarkesh Patel (YouTube) ok 11 1495
Y Combinator (YouTube) ok 8 1506
Hacker News (front page) ok 8 5356
Maxinomics ok 6 1522
Sabine Hossenfelder ok 6 1412
a16z News ok 5 86
Kyla Scanlon ok 5 1647
Rowan Cheung ok 5 1493
Cloudflare Blog ok 4 226
Two Minute Papers ok 4 1484
Latent Space ok 4 132
Mo Bitar (YouTube) ok-discovered 4 2437
Fireship ok 4 1507
Hugging Face Blog ok 4 193
OpenAI News ok-discovered 3 1945
AI Explained ok 3 14
Internet of Bugs ok 3 1531
Astral Codex Ten (Scott Alexander) ok 3 136
Interconnects (Nathan Lambert) ok 2 158
Google AI / DeepMind ok 2 158
The Pragmatic Engineer ok 2 55
Conversable Economist (Timothy Taylor) ok 2 97
Tomasz Tunguz ok 2 117
DeepLearningAI ok 2 1519
3Blue1Brown ok 2 1449
Works in Progress ok 2 138
Fly.io Blog ok 1 332
PostHog Engineering ok 1 755
Stripe Engineering ok-html-fallback 1 2052
Discord Engineering ok-html-fallback 1 1895
Bessemer Atlas ok-html-fallback 1 2981
Patrick Boyle ok 1 174
CodeEmporium ok 1 1489
Practical Engineering ok 1 1350
The Robot Brains Podcast ok 1 1598
Neural Breakdown with AVB ok 1 1597
Noahpinion (Noah Smith) ok 1 139
Google Research Blog ok 1 333
Dwarkesh Patel ok 1 88
The Ezra Klein Show ok 1 446
Artificial Analysis ok-html-fallback 0 2215
Shopify Engineering ok-html-fallback 0 2673
LangChain Blog ok-html-fallback 0 2347
Out-Of-Pocket ok-html-fallback 0 1706
Asimov Press ok-html-fallback 0 1844
Andrej Karpathy (GitHub) ok-html-fallback 0 2341
Sebastian Raschka no-items 0 106
Chip Huyen no-items 0 223
Eugene Yan no-items 0 181
Alpha Signal html-error 0 1552 Request failed with error code 403
The Batch (deeplearning.ai) html-error 0 1789 Request failed with error code 403
Anthropic News no-items 0 2072
Data Science Weekly rss-error 0 2139 Request failed with error code 403
All Things Distributed (Werner Vogels) no-items 0 166
Not Boring (Packy McCormick) no-items 0 128
The Generalist (Mario Gabriele) no-items 0 308
Kwokchain (Kevin Kwok) no-items 0 287
Above the Crowd (Bill Gurley) no-items 0 180
Hunter Walk no-items 0 96
Sequoia Capital no-items 0 25
Elad Gil no-items 0 1664
AVC (Fred Wilson) no-items 0 3055
Fierce Pharma no-items 0 92
Fierce Biotech no-items 0 135
Health Tech Nerds no-items 0 2143
Ground Truths (Eric Topol) rss-error 0 2097 Request failed with error code 403
Decoding Bio rss-error 0 2059 Request failed with error code 403
Rock Health Insights no-items 0 259
Andrej Karpathy (YouTube) no-items 0 47
Robert Wachter rss-error 0 2148 Request failed with error code 403
Acquired no-items 0 241
Yannic Kilcher no-items 0 1498
r/LocalLLaMA rss-error 0 2866 Request failed with error code 429
r/LLMDevs rss-error 0 2849 Request failed with error code 429
r/ClaudeAI rss-error 0 2871 Request failed with error code 429
r/devops rss-error 0 2992 Request failed with error code 429
r/ExperiencedDevs rss-error 0 3004 Request failed with error code 429
r/biotech rss-error 0 3005 Request failed with error code 429
r/pharmacy rss-error 0 3000 Request failed with error code 429
r/medicine rss-error 0 3009 Request failed with error code 429
r/pharmaindustry rss-error 0 3003 Request failed with error code 429
r/biotechnology rss-error 0 3009 Request failed with error code 429
Ben Felix no-items 0 1427
Anthropic (YouTube) no-items 0 1503
Money & Macro no-items 0 1539
In The Pipeline (Derek Lowe) html-error 0 23651 Request failed with error code 403
a16z (YouTube) no-items 0 1156
Hannah Fry no-items 0 1563
Net Interest (Marc Rubinstein) no-items 0 110
Apricitas Economics (Joseph Politano) no-items 0 128
Bits about Money (Patrick McKenzie) no-items 0 198
Liberty Street Economics (NY Fed) no-items 0 257
Lilian Weng no-items 0 31
Bank Underground (Bank of England) no-items 0 236
Dan Luu no-items 0 542
Meta AI Research no-items 0 1877
Klement on Investing rss-error 0 2105 Request failed with error code 403
Made of Bugs (Nelson Elhage) no-items 0 189
Brendan Gregg no-items 0 450

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.