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
2026-06-29
Digest model
claude-sonnet-4-6 · 40,255 in · 6,157 out
Roundup model
claude-haiku-4-5-20251001 · alias claude-haiku-4-5 · 38,369 in · 9,287 out
Sources
52/104 ok · 19 failed · 0 blocked · 33 empty
Items
124 fetched · 124 sent to LLM
Duration
350.4 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
124
items after dedup · 119.2% of previous · 119.2% of start
Considered
124
reached an LLM · 100.0% of previous · 119.2% 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

52 ok 33 empty 19 failed 0 blocked
Source Status Items ms Notes
Marginal Revolution (Tyler Cowen) ok 12 341
STAT News ok 12 225
r/MachineLearning ok 12 762
Hacker News (front page) ok 12 2519
Simon Willison ok 9 145
Vercel Blog ok 5 974
a16z (YouTube) ok 5 1504
a16z News ok 4 299
Dwarkesh Patel (YouTube) ok 4 1648
Y Combinator (YouTube) ok 4 1348
Sabine Hossenfelder ok 3 1497
Noahpinion (Noah Smith) ok 3 114
PostHog Engineering ok 2 301
The Generalist (Mario Gabriele) ok 2 176
Latent Space ok 2 100
Mo Bitar (YouTube) ok-discovered 2 2910
Hugging Face Blog ok 2 204
Interconnects (Nathan Lambert) ok 1 213
Sebastian Raschka ok 1 121
Google AI / DeepMind ok 1 164
Cloudflare Blog ok 1 385
Stripe Engineering ok-html-fallback 1 2172
Discord Engineering ok-html-fallback 1 1936
Not Boring (Packy McCormick) ok 1 140
Tomasz Tunguz ok 1 177
Hunter Walk ok 1 116
Bessemer Atlas ok-html-fallback 1 3954
Andrej Karpathy (YouTube) ok 1 69
Yannic Kilcher ok 1 540
Patrick Boyle ok 1 1507
Kyla Scanlon ok 1 1428
Fireship ok 1 1508
Ben Felix ok 1 1512
DeepLearningAI ok 1 1451
The Robot Brains Podcast ok 1 1499
Rowan Cheung ok 1 1673
Practical Engineering ok 1 1369
Money & Macro ok 1 1506
3Blue1Brown ok 1 1497
Hannah Fry ok 1 1712
Net Interest (Marc Rubinstein) ok 1 128
Liberty Street Economics (NY Fed) ok 1 242
Google Research Blog ok 1 215
Dwarkesh Patel ok 1 135
Astral Codex Ten (Scott Alexander) ok 1 418
Works in Progress ok 1 621
Artificial Analysis ok-html-fallback 0 2707
Shopify Engineering ok-html-fallback 0 2959
LangChain Blog ok-html-fallback 0 2382
Out-Of-Pocket ok-html-fallback 0 3724
Asimov Press ok-html-fallback 0 1798
Andrej Karpathy (GitHub) ok-html-fallback 0 2207
Eugene Yan no-items 0 103
Chip Huyen no-items 0 231
Alpha Signal html-error 0 1553 Request failed with error code 403
The Batch (deeplearning.ai) html-error 0 1659 Request failed with error code 403
Data Science Weekly rss-error 0 2133 Request failed with error code 403
The Pragmatic Engineer no-items 0 202
OpenAI News html-error 0 1538 Request failed with error code 403
Fly.io Blog no-items 0 385
All Things Distributed (Werner Vogels) no-items 0 203
Kwokchain (Kevin Kwok) no-items 0 163
Conversable Economist (Timothy Taylor) no-items 0 875
Above the Crowd (Bill Gurley) no-items 0 117
Elad Gil no-items 0 1640
Sequoia Capital no-items 0 129
AVC (Fred Wilson) no-items 0 2521
Fierce Pharma no-items 0 168
Fierce Biotech no-items 0 65
Health Tech Nerds no-items 0 3259
In The Pipeline (Derek Lowe) html-error 0 2252 Request failed with error code 403
Ground Truths (Eric Topol) rss-error 0 2041 Request failed with error code 403
Rock Health Insights no-items 0 255
Decoding Bio rss-error 0 2055 Request failed with error code 403
Robert Wachter rss-error 0 2054 Request failed with error code 403
Two Minute Papers no-items 0 632
Acquired no-items 0 197
Anthropic News no-items 0 18746
r/ClaudeAI rss-error 0 2327 Request failed with error code 429
r/LLMDevs rss-error 0 2804 Request failed with error code 429
r/LocalLLaMA rss-error 0 3016 Request failed with error code 429
r/ExperiencedDevs rss-error 0 2265 Request failed with error code 429
r/medicine rss-error 0 2993 Request failed with error code 429
r/devops rss-error 0 3001 Request failed with error code 429
r/biotech rss-error 0 2997 Request failed with error code 429
AI Explained no-items 0 10
r/pharmacy rss-error 0 3008 Request failed with error code 429
r/pharmaindustry rss-error 0 3006 Request failed with error code 429
r/biotechnology rss-error 0 3006 Request failed with error code 429
Internet of Bugs no-items 0 1652
Anthropic (YouTube) no-items 0 1506
CodeEmporium no-items 0 1633
Maxinomics no-items 0 1320
Neural Breakdown with AVB no-items 0 1518
Bits about Money (Patrick McKenzie) no-items 0 229
Apricitas Economics (Joseph Politano) no-items 0 233
Bank Underground (Bank of England) no-items 0 141
Lilian Weng no-items 0 84
Meta AI Research no-items 0 1120
The Ezra Klein Show no-items 0 676
Dan Luu no-items 0 585
Brendan Gregg no-items 0 618
Klement on Investing rss-error 0 2521 Request failed with error code 403
Made of Bugs (Nelson Elhage) no-items 0 351

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.