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
2026-06-04
Digest model
claude-sonnet-4-6 · 67,409 in · 6,849 out
Roundup model
claude-haiku-4-5-20251001 · alias claude-haiku-4-5 · 66,252 in · 5,049 out
Sources
66/104 ok · 9 failed · 0 blocked · 29 empty
Items
270 fetched · 250 sent to LLM
Duration
536.7 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
270
items after dedup · 259.6% of previous · 259.6% of start
Considered
250
reached an LLM · 92.6% of previous · 240.4% 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

66 ok 29 empty 9 failed 0 blocked
Source Status Items ms Notes
Marginal Revolution (Tyler Cowen) ok 12 432
STAT News ok 12 146
r/MachineLearning ok 12 585
r/LocalLLaMA ok 12 1426
r/LLMDevs ok 12 1505
r/devops ok 12 1154
r/ExperiencedDevs ok 12 1430
r/ClaudeAI ok 12 1623
r/pharmacy ok 12 1363
r/biotech ok 12 1756
r/medicine ok 12 1578
Hacker News (front page) ok 12 59
AI Explained ok 11 9
a16z News ok 10 92
Simon Willison ok 8 139
Latent Space ok 7 96
Two Minute Papers ok 5 381
Hugging Face Blog ok 5 146
Vercel Blog ok 4 665
Money & Macro ok 4 1478
Maxinomics ok 4 1574
Liberty Street Economics (NY Fed) ok 4 237
PostHog Engineering ok 3 242
Rowan Cheung ok 3 1457
Interconnects (Nathan Lambert) ok 2 321
Google AI / DeepMind ok 2 206
The Pragmatic Engineer ok 2 125
Cloudflare Blog ok 2 254
Tomasz Tunguz ok 2 159
Hunter Walk ok 2 129
Dwarkesh Patel (YouTube) ok 2 1500
r/pharmaindustry ok 2 1758
r/biotechnology ok 2 1677
Kyla Scanlon ok 2 1584
DeepLearningAI ok 2 1474
Practical Engineering ok 2 1555
Noahpinion (Noah Smith) ok 2 134
a16z (YouTube) ok 2 1579
Astral Codex Ten (Scott Alexander) ok 2 92
Works in Progress ok 2 577
The Batch (deeplearning.ai) ok-html-fallback 1 1914
Anthropic News ok-html-fallback 1 2755
Artificial Analysis ok-html-fallback 1 2261
Stripe Engineering ok-html-fallback 1 2351
Discord Engineering ok-html-fallback 1 2186
Shopify Engineering ok-html-fallback 1 2752
Conversable Economist (Timothy Taylor) ok 1 183
Not Boring (Packy McCormick) ok 1 151
The Generalist (Mario Gabriele) ok 1 159
LangChain Blog ok-html-fallback 1 2605
Sequoia Capital ok 1 26
Out-Of-Pocket ok-html-fallback 1 1724
Health Tech Nerds ok-html-fallback 1 2214
Asimov Press ok-html-fallback 1 1660
Andrej Karpathy (GitHub) ok-html-fallback 1 2068
Mo Bitar (YouTube) ok-discovered 1 2369
Ben Felix ok 1 1401
Fireship ok 1 1501
Internet of Bugs ok 1 1449
CodeEmporium ok 1 1642
The Robot Brains Podcast ok 1 1501
Neural Breakdown with AVB ok 1 1654
Y Combinator (YouTube) ok 1 1423
Sabine Hossenfelder ok 1 1554
Google Research Blog ok 1 374
The Ezra Klein Show ok 1 451
Sebastian Raschka no-items 0 88
Chip Huyen no-items 0 199
Eugene Yan no-items 0 193
Alpha Signal html-error 0 1566 Request failed with error code 403
Data Science Weekly rss-error 0 2104 Request failed with error code 403
Fly.io Blog no-items 0 181
OpenAI News html-error 0 1546 Request failed with error code 403
All Things Distributed (Werner Vogels) no-items 0 136
Kwokchain (Kevin Kwok) no-items 0 136
Above the Crowd (Bill Gurley) no-items 0 26
Elad Gil no-items 0 1655
AVC (Fred Wilson) no-items 0 2221
Fierce Pharma no-items 0 107
Fierce Biotech no-items 0 106
In The Pipeline (Derek Lowe) html-error 0 2420 Request failed with error code 403
Ground Truths (Eric Topol) rss-error 0 2039 Request failed with error code 403
Rock Health Insights no-items 0 167
Andrej Karpathy (YouTube) no-items 0 169
Decoding Bio rss-error 0 2115 Request failed with error code 403
Robert Wachter rss-error 0 2039 Request failed with error code 403
Acquired no-items 0 411
Yannic Kilcher no-items 0 1358
Patrick Boyle no-items 0 1503
Anthropic (YouTube) no-items 0 1501
3Blue1Brown no-items 0 1378
Hannah Fry no-items 0 1356
Net Interest (Marc Rubinstein) no-items 0 175
Bits about Money (Patrick McKenzie) no-items 0 248
Apricitas Economics (Joseph Politano) no-items 0 309
Bank Underground (Bank of England) no-items 0 137
Lilian Weng no-items 0 24
Dwarkesh Patel no-items 0 195
Meta AI Research no-items 0 1223
Dan Luu no-items 0 483
Klement on Investing rss-error 0 2215 Request failed with error code 403
Made of Bugs (Nelson Elhage) no-items 0 170
Brendan Gregg no-items 0 440
Bessemer Atlas html-error 0 274873 The socket connection was closed unexpectedly. For more information, pass `verbose: true` in the second argument to fetch()

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.