Claude Fable 5 banned, but what’s the bigger story. We go through 11 under-reported details, so you have the context to see what’s coming next for your use of AI. From whether the ban will last, what the possible motives are, what the model can actually do, and some wild over-extrapolations going on.


Check out my fast-growing (!) app, free to use, and code INSIDER15 for paid tiers: https://lmcouncil.ai

AI Insiders ($9!): https://www.patreon.com/AIExplained

Chapters:
00:00 - Introduction
00:51 - Came from an Anthropic Investor ‘and other tech leaders’
01:47 - Govt pressured by CEOs like Jamie Dimon
03:01 - ‘Already decided’
04:02 - Prompt Injection Robustness Comparison
05:15 - Wellness?
06:36 - “Overreach”
08:17 - Anthropic Did Admit it would cause Difficulty
09:32 - 90 Minutes
10:02 - Equity Absence 
10:31 - Lobbying and OpenAI

‘Already Decided’ - https://www.theinformation.com/articles/amazons-jassy-raised-concerns-anthropic-model-trump-crackdown?rc=sy0ihq

Not for Other Models: https://www.theinformation.com/briefings/u-s-government-unlikely-extend-anthropic-export-control-ai-companies?rc=sy0ihq

90 Minutes: https://archive.fo/20260614001605/https://www.politico.com/news/2026/06/13/inside-the-whirlwind-24-hours-that-led-the-white-house-to-slap-export-controls-on-anthropic-00961519#selection-807.1-807.219

Anthropic Statement: https://www.anthropic.com/news/fable-mythos-access

Life Comes at you Fast: https://x.com/etbrooking/status/2065638276388495742

Anthropic Deputy CISO: https://x.com/TheTranscript_/status/2065883670053847324

Hegseth Gloat: https://x.com/PeteHegseth/status/2065897156226015690

Roon Speculation: https://x.com/tszzl/status/2065939227167392147

Mythos System Card: https://www-cdn.anthropic.com/d00db56fa754a1b115b6dd7cb2e3c342ee809620.pdf

Sachs Statement: https://x.com/DavidSacks/status/2065853007619588171


OpenAI Lobbying: https://thehill.com/policy/technology/5912720-altman-openai-get-bogged-down-in-political-spending-fight/

Absent from Equity Talks: https://finance.yahoo.com/sectors/technology/articles/trump-ai-ownership-plan-could-131053732.html

Pliny Jaibreak: https://x.com/elder_plinius/status/2064776322979676227

Fusion: https://x.com/OpenRouter/status/2065856871215329545

https://lmcouncil.ai 



Non-hype Newsletter: https://signaltonoise.beehiiv.com/

Podcast: https://aiexplainedopodcast.buzzsprout.com/

Fable 5 is out - and it’s good, very good. But beyond the splashy demos, I want to bring you the 20+ nuggets from the 319 page system card, which I read in full, all day, plus benchmarks you may not have noticed. 

https://assemblyai.com/aiexplained

Plus two worrying trends inside the ‘mind’ of Claude, how OpenAI counter, and the transformer inventor’s warning.



Check out my fast-growing (!) app, free to use, and code INSIDER15 for paid tiers: https://lmcouncil.ai

AI Insiders ($9!): https://www.patreon.com/AIExplained

Chapters:
00:00 - Introduction
01:06 - Blocks + Better Models
02:42 - Fable 5 Upgrade over Mythos Preview
04:49 - ML Acceleration Bombshell
07:11 - No RSI yet
07:41 - Bio-capable
14:51 - Creative Writing … no
17:23 - Does need bug-checks
18:57 - OpenAI Response
19:23 - Benchmark Bonanza
28:06 - Chain of Thought worrying trend

Fable 5 Release: https://www.anthropic.com/news/claude-fable-5-mythos-5

System Card: https://www-cdn.anthropic.com/d00db56fa754a1b115b6dd7cb2e3c342ee809620.pdf

Intelligence Explosion: https://www.patreon.com/posts/anthropic-charts-160231656

Annotated: https://x.com/Miles_Brundage/status/2064500190523113816/photo/1

OpenAI Counter: https://x.com/thsottiaux/status/2064572118264913923
https://x.com/thsottiaux/status/2043177597434306699

Double Lifespan: https://darioamodei.com/essay/machines-of-loving-grace

AutomationBench: https://zapier.com/benchmarks
Vending Bench: https://x.com/andonlabs/status/2064429817530085804
CritPt: https://critpt.com/
Riemann Bench: https://surgehq.ai/leaderboards/riemann-bench
GDPVal: https://artificialanalysis.ai/evaluations/gdpval-aa
BluePrint Bench 2: https://andonlabs.com/evals/blueprint-bench-2
MCP Atlas: https://labs.scale.com/leaderboard/mcp_atlas
FutureSim: https://x.com/nikhilchandak29/status/2064676801440358774

Roon Stun Lock: https://x.com/tszzl/status/2064454617568874669

Noam Brown Inference Ceiling: https://x.com/polynoamial/status/2064210146558136827

Isochronic Chart: https://isochronic-passage-chart.netlify.app/#nyc
Rose Tavern: https://claude.ai/public/artifacts/2295bebe-77e6-43e2-ae94-0fe49e9a776b
Redwall Game: https://redwall-mossflower.surge.sh/

Risk Report: https://www-cdn.anthropic.com/097c63b5fe7dd8b14866e1f15bb1910ec713658a.pdf

Transformer Inventor Warning: https://x.com/tszzl/status/2064563986914554125



Non-hype Newsletter: https://signaltonoise.beehiiv.com/

Podcast: https://aiexplainedopodcast.buzzsprout.com/

The ‘best’ generally available AI model just dropped, but there is plenty I bet you missed about what it is, how it performs, and what the release tells us. 15 highlights from the 244 page system card, plus private testing, leader interview and more.

AI Insiders ($9!): https://www.patreon.com/AIExplained

Chapters:
00:00 - Introduction
00:49 - Mythos in Weeks
01:49 - Adaptive not necessary
02:26 - Honesty?
04:37 - Flagging Uncertainty
04:57 - Benchmarks
08:54 - Mythos will be even better
10:30 - Business skillz
11:15 - Model Welfare
12:16 - Cyber Comparable
13:10 - Misalignment Concerns
16:22 - Meta Inabilities
17:58 - Code flagging
18:34 - Go to sleep
18:50 - Fast Mode
20:21 - Dynamic Workflows


Opus 4.8 Paper: https://cdn.sanity.io/files/4zrzovbb/website/c886650a2e96fc0925c805a1a7ca77314ccbf4a6.pdf

Release: https://www.anthropic.com/news/claude-opus-4-8


Chips: https://www.theinformation.com/articles/anthropic-talks-use-microsofts-ai-chips?rc=sy0ihq
https://www.anthropic.com/news/expanding-our-use-of-google-cloud-tpus-and-services
https://www.anthropic.com/news/higher-limits-spacex

Patreon Vid: https://www.patreon.com/posts/re-up-anthropics-159289449

GDPVal: https://artificialanalysis.ai/evaluations/omniscience
https://arxiv.org/abs/2510.04374

Amodei Technical Debt: https://www.youtube.com/watch?v=7xco5Qd2Oo8

Dynamic Workflows: https://x.com/ClaudeDevs/status/2060044853279617150
https://x.com/_catwu/status/2060054180379689074/photo/1
https://claude.com/blog/introducing-dynamic-workflows-in-claude-code

https://simple-bench.com/


Check out my fast-growing (!) app, free to use, and code INSIDER15 for paid tiers: https://lmcouncil.ai

Non-hype Newsletter: https://signaltonoise.beehiiv.com/

Podcast: https://aiexplainedopodcast.buzzsprout.com/

The biggest Google AI push of the year, but what is the bigger story? Why is Google pursuing a different fork in the road than OpenAI or Anthropic? What does Gemini 3.5 Flash mean for the near-term future of AI? 

https://assemblyai.com/aiexplained

Plus the highlights from a provocative new paper on AI, 8 key moments you may have missed, and the signal from 5+ hours of AI lab interviews.



Check out my free to use app, code INSIDER15 for paid tiers: https://lmcouncil.ai

AI Insiders ($9!): https://www.patreon.com/AIExplained

Chapters:
00:00 - Introduction
00:38 - Vibes and Google Goal
02:18 - Omni, again?
06:57 - Taking the same road
07:44 - Gemini 3 Flash
12:37 - Pitching on Cost?
13:55 - Agentic Task Search
14:30 - 1-shot OS but jagged, negation paper
20:02 - The Karpathy Moonshot 

Mostafa Deghani Interview: https://www.youtube.com/watch?v=Bo19sXssYXI

Negation Neglect Paper: https://arxiv.org/pdf/2605.13829

Gemini 3.5 Flash Headline Scores: https://deepmind.google/models/model-cards/gemini-3-5-flash/

Sors original AGI Path: https://www.theguardian.com/commentisfree/2024/feb/24/openai-video-generation-tool-sora-babies-ai-artificial-intelligence

Hassabis Helped Set-up Anthropic: https://archive.fo/20260519070857/https://www.ft.com/content/8f2a529e-7a1b-4d8e-95be-338d0c4c98f5

Intelligence to Output Speed: https://artificialanalysis.ai/models?intelligence-comparison=intelligence-vs-output-speed#intelligence

VibeCodeBench + Finance Agent: https://www.vals.ai/home

OpenAI Needs Ads: https://archive.ph/20260409123153/https://www.reuters.com/business/media-telecom/openai-projects-25-billion-ad-revenue-this-year-100-billion-by-2030-axios-2026-04-09/

Anthropic Core Views: https://www.anthropic.com/news/core-views-on-ai-safety

Karpathy Move: https://x.com/karpathy/status/2056753169888334312
https://www.axios.com/2026/05/19/anthropic-openai-karpathy-andrej-claude

Recursive Self-Improvement: https://www.patreon.com/posts/ineffably-smart-156866417



Non-hype Newsletter: https://signaltonoise.beehiiv.com/

Podcast: https://aiexplainedopodcast.buzzsprout.com/

GPT 5.5 full analysis, plus DeepSeek V4 paper highlights, comparisons with Mythos, a vibe-coded game w/ GPT Image 2, and 50 data-points you wouldn’t get from just reading the headlines.

Chapters:

01:11 - GPT 5.5 Comparison

06:04 - Mythos Marketing

11:50 - Recursive Self-Improvement?

14:11 - Deepseek V4

18:03 - VibeCode Experiment Extravaganza

21:44 - The Scarce Compute Era

https://80000hours.org/aiexplained

OpenAI Benchmarks: https://openai.com/index/introducing-gpt-5-5/

5.5 System Card: https://deploymentsafety.openai.com/gpt-5-5/gpt-5-5.pdf

Direct Comparison: https://pbs.twimg.com/media/HGnNm5GWEAAJ1Ob?format=jpg&name=4096x4096

DeepSeek Paper: https://huggingface.co/deepseek-ai/DeepSeek-V4-Pro

SWE Bench Pro - benchmark of choice? https://x.com/ChowdhuryNeil/status/2047416077622395025

AA Omniscience: https://artificialanalysis.ai/evaluations/omniscience

Vending Bench: https://x.com/andonlabs/status/2047377260412649967

Opus 4.7 System Card: https://cdn.sanity.io/files/4zrzovbb/website/037f06850df7fbe871e206dad004c3db5fd50340.pdf

Sam Altman Drunk Phase: https://x.com/sama/with_replies

Noam Brown: https://x.com/polynoamial/status/2047387675762802998

DeepSeek Compute Crunch: https://www.bloomberg.com/news/articles/2026-04-24/deepseek-unveils-newest-flagship-a-year-after-ai-breakthrough?srnd=phx-ai

Spreadsheet Bench: https://x.com/nicochristie/status/2047476237464211721

Pattern Recognition: https://arcprize.org/leaderboard

Leader Interviews: 

Core Memory: https://www.youtube.com/watch?v=NCKQL0op30E

Knowledge Podcast: https://www.youtube.com/watch?v=6JoUcQ1qmAc
Big Tech Round 1: https://www.youtube.com/watch?v=J6vYvk7R190&t=1116s

Big Tech Round 2: https://www.youtube.com/watch?v=YnoQ8RJbALw&t=8s

Claude Code Limitations: https://x.com/TheAmolAvasare/status/2046724659039932830

ChatGPT 5.4 for Clinicians: https://openai.com/index/making-chatgpt-better-for-clinicians/

Image Arena: https://x.com/arena/status/2046670703311884548

VibeCode Bench: https://www.vals.ai/benchmarks/vibe-code

5.5-made Game +Seedance 2.0: https://rosemere-quest.pages.dev/

Claude Opus 4.7 just dropped, but behind every headline lies a deeper story. From a bonanza of benchmarks, to seeing the fruits of one of the biggest mega-projects in US history, to sneaky Mythos disclaimers, to Anthropic admitting compute restraints and, forcing lower capability of Opus 4.7. Where the new model falls behind Gemini but ahead of GPT 5.4, plus why some users are furious at Anthropic. Ending with a 9-year animus, that still affects AI today…

https://assemblyai.com/aiexplained



Check out my fast-growing (!) app, free to use, and code INSIDER15 for paid tiers: https://lmcouncil.ai

AI Insiders ($9!): https://www.patreon.com/AIExplained

Chapters:
00:00 - Introduction
00:58 - Benchmarks
05:21 - Market Share + Compute Problems
08:12 - Mythos Exclusives
12:56 - User Frustration + Claude Code Updates
14:03 - Brockman Amodei Rivalry
17:40 - OpenAI vs Anthropic Approach to Code

Claude 4.7 Opus Release Notes: https://www.anthropic.com/news/claude-opus-4-7
vs Mythos: https://pbs.twimg.com/media/HGCGugrXUAAKcHp?format=jpg&name=medium

232-page System Card: https://cdn.sanity.io/files/4zrzovbb/website/037f06850df7fbe871e206dad004c3db5fd50340.pdf

ARC-AGI 2: https://x.com/arcprize/status/2044834615417053305/photo/1

ParseBench: https://x.com/jerryjliu0/status/2044902620746363016/photo/1

GDPVal: https://artificialanalysis.ai/evaluations/gdpval-aa

Vidoc Security Replication: https://blog.vidocsecurity.com/blog/we-reproduced-anthropics-mythos-findings-with-public-models

Boris Cherny Settings: https://x.com/Hesamation/status/2043016923961577516/photo/2

User Frustration: https://x.com/RileyRalmuto/status/2044836116189069660

VibeCode Bench: https://x.com/ValsAI/status/2044791415524471099/photo/1

Verge Memo: https://www.theverge.com/ai-artificial-intelligence/911118/openai-memo-cro-ai-competition-anthropic

5.4 Cyber: ​​https://openai.com/index/scaling-trusted-access-for-cyber-defense/

Data Centers in Absolute $: https://x.com/finmoorhouse/status/2044933442236776794/photo/1

…in % of GDP: https://pbs.twimg.com/media/HGEN8FGWQAAN7Np?format=jpg&name=4096x4096

WSJ Exclusive: https://www.wsj.com/tech/ai/the-decadelong-feud-shaping-the-future-of-ai-7075acde

Brockman Interview: https://www.youtube.com/watch?v=J6vYvk7R190

$1T Valuation: https://x.com/StefanFSchubert/status/2045039686997967082

Emotions: https://www.patreon.com/c/aiexplained/posts

https://lmcouncil.ai/benchmarks


Non-hype Newsletter: https://signaltonoise.beehiiv.com/

The model, the mythos, the legend. We have a new best AI model, but not all of us. How good is it, what does it’s new offensive capabilities mean? Why does it’s 244 page report card remind me of Her, and why did the creator of Claude Code call it ‘terrifying’. 30+ highlights sourced by reading the paper in full, old-school, no AI summary.

https://80000hours.org/aiexplained


Check out my fast-growing (!) app, free to use, and code INSIDER15 for paid tiers: https://lmcouncil.ai

AI Insiders ($9!): https://www.patreon.com/AIExplained

Chapters:
00:00 - Introduction
00:56 - Internal Release + Availability
02:37 - General Capabilities
05:12 - Self-improvement?
06:15 - ‘Terrifying’ Landscape
11:07 - Safety Decision
13:22 - Coding
14:49 - Alignment, Awareness
19:52 - GUI for Agents/Claws + Hallucinations
21:34 - …Emotions?
25:29 - Her connection

244-page System Card: https://www-cdn.anthropic.com/8b8380204f74670be75e81c820ca8dda846ab289.pdf

Project Glasswing: https://www.anthropic.com/glasswing
Zero-Day Details: https://red.anthropic.com/2026/mythos-preview/

Mythos ‘terrifying’: https://x.com/bcherny/status/2041605852382351666

New Yorker Altman/Amodei: https://archive.fo/20260406100412/https://www.newyorker.com/magazine/2026/04/13/sam-altman-may-control-our-future-can-he-be-trusted

Alignment Risk Update: https://www-cdn.anthropic.com/79c2d46d997783b9d2fb3241de43218158e5f25c.pdf

In a Park: https://x.com/sleepinyourhat/status/2041584808514744742

“Uhm” - https://x.com/thsottiaux/status/2041749947385815109


Non-hype Newsletter: https://signaltonoise.beehiiv.com/

Podcast: https://aiexplainedopodcast.buzzsprout.com/

First look at exclusive reports about OpenAI's new Spud model, and the model Anthropic think will stir governments to urgency, all in the context of the newly-launched ARC-AGI-3. What does the extreme difficulty of that benchmarks, and its quirky scoring metrics, mean for AI in 2026?

https://assemblyai.com/aiexplained


Check out my fast-growing (!) app, free to use, and code INSIDER15 for paid tiers: https://lmcouncil.ai

AI Insiders ($9!): https://www.patreon.com/AIExplained


Chapters:
00:00 - Introduction
00:55 - OpenAI Side Quests
01:58 - Claude New Model Coming + Universal Equity?
03:13 - ARC-AGI 3
05:00 - Intentional or Unintentional Gaming?
07:11 - But is it AGI Harbinger? No Harness
09:41 - Not the First
12:32 - Automated Researcher
15:00 - Claw Caveat

Spud: https://www.theinformation.com/articles/openai-ceo-shifts-responsibilities-preps-spud-ai-model?utm_campaign=Editorial&utm_content=Article&utm_medium=organic_social&utm_source=bluesky%2Cfacebook%2Clinkedin%2Cthreads%2Ctwitter&rc=sy0ihq

FT: OpenAI Special Model: https://www.ft.com/content/de9bf0af-b241-424f-8229-5870b1c0d93d?syn-25a6b1a6=1

Jensen Huang: https://www.forbes.com/sites/antoniopequenoiv/2026/03/23/nvidias-jensen-huang-says-he-thinks-weve-achieved-agi/

Axios Article: https://archive.fo/20260326100140/https://www.axios.com/2026/03/26/anthropic-pentagon-ai-deal#selection-827.0-829.257

https://arcprize.org/arc-agi/3

ARC AGI 3 Paper: https://arcprize.org/media/ARC_AGI_3_Technical_Report.pdf

NetHack Leaderboard: https://balrogai.com/
Paper: https://ai.meta.com/research/publications/the-nethack-learning-environment/
https://x.com/_rockt/status/2036864121585438995

Claw Shells: https://x.com/DrJimFan/status/2036494601750716711

OpenAI Automated Researcher: https://www.technologyreview.com/2026/03/20/1134438/openai-is-throwing-everything-into-building-a-fully-automated-researcher/

Patreon Post: https://www.patreon.com/c/aiexplained/posts

Eng Jobs: https://x.com/lennysan/status/2036535460726767793

Non-hype Newsletter: https://signaltonoise.beehiiv.com/

Podcast: https://aiexplainedopodcast.buzzsprout.com/

Just 48 hours after releasing GPT 5.3 Instant, OpenAI have released GPT 5.4 Thinking, so either their is an imminent singularity or perhaps we are being distracted from other news. This video will give 9 crucial bits of context, not just on the GPT 5.4 drop but on the background to the meltdown between the Pentagon and Anthropic. What does this say about the state of AI progress, your job, and what is next.


Check out my fast-growing (!) app, free to use, and code INSIDER15 for 15% off paid tiers: https://lmcouncil.ai

AI Insiders ($9!): https://www.patreon.com/AIExplained

Chapters:
00:00 - Introduction
01:06: GPT 5.4 Breakdown
05:06 - Closing the Loop
06:35 - Spiky Performance
10:31 - Advice
11:32 - Less Encouraging Developments - Fired Like Dogs
17:45 - But Used in Iran


GPT 5.4: https://openai.com/index/introducing-gpt-5-4/

Hallucinations: https://artificialanalysis.ai/evaluations/omniscience
Investment Banking Bench: https://x.com/bradlightcap/status/2029684672343728452
Move 37: https://x.com/nasqret/status/2029628846518010099
System Card: https://deploymentsafety.openai.com/gpt-5-4-thinking/gpt-5-4-thinking.pdf

Prediction Market Scandal: https://www.wired.com/story/openai-fires-employee-insider-trading-polymarket-kalshi/


GPT 5.3 Instant: https://openai.com/index/gpt-5-3-instant/

GDPVal: https://openai.com/index/gdpval/

Claude in Iran: https://www.washingtonpost.com/technology/2026/03/04/anthropic-ai-iran-campaign

‘Like Dogs’: https://x.com/AndrewCurran_/status/2029605783311470679

Altman leak: https://www.cnbc.com/2026/03/03/sam-altman-tells-openai-staff-operational-decisions-up-to-government.html

Original 2024 Switch: https://archive.fo/20240116172526/https://www.bloomberg.com/news/articles/2024-01-16/openai-working-with-us-military-on-cybersecurity-tools-for-veterans#selection-6173.83-6173.226

Amodei Original Memo: https://www.theinformation.com/articles/read-anthropic-ceos-memo-attacking-openais-mendacious-pentagon-announcement?rc=sy0ihq
Anthropic Apology: https://www.anthropic.com/news/where-stand-department-war
OpenAI Employee Reaction: https://x.com/tszzl/status/2029334980481212820

DoD Suppler Risk: https://www.cnbc.com/amp/2026/03/05/anthropic-pentagon-ai-claude-iran.html
Atlantic Exclusive: https://archive.fo/20260301152646/https://www.theatlantic.com/technology/2026/03/inside-anthropics-killer-robot-dispute-with-the-pentagon/686200/#selection-941.61-941.212
No Negotiation: https://x.com/USWREMichael/status/2029754965778907493

$20B Doubling: https://archive.ph/20260304111124/https://www.bloomberg.com/news/articles/2026-03-03/anthropic-nears-20-billion-revenue-run-rate-amid-pentagon-feud

March 2022 Interview: https://www.youtube.com/watch?v=uAA6PZkek4A

https://lmcouncil.ai/



Non-hype Newsletter: https://signaltonoise.beehiiv.com/

Will Anthropic be forced to make a version of Claude for war? And does a new paper expose the risks of Claude agents, in both OpenClaw and the field of war? Plus, 5 more twists in the story of the Pentagon versus Anthropic + some AI lab employees, and a petition that could change everything, or nothing...


Check out my fast-growing (!) app, free to use, and code INSIDER15 for paid tiers: https://lmcouncil.ai

AI Insiders ($9!): https://www.patreon.com/AIExplained

Chapters:
00:00 - Introduction
00:44 - Deadline Day + Petition
02:42 - Twist 1: Existing Deal
03:26 - Twist 2: Existing Policy
04:21 - Twist 3: Twin Threats
05:54 - Twist 4: Interesting Objections
11:32 - Twist 5: Anthropic’s Dropped Policy


Dario Statement: https://www.anthropic.com/news/statement-department-of-war

Google/OpenAI Petition: https://notdivided.org/

Axios on Amodei Rejection: https://www.axios.com/2026/02/26/anthropic-rejects-pentagon-ai-terms

FT on US Threat: https://www.ft.com/content/11d27612-d6c5-4cf7-94dd-f65603549b7f

Politico on Latest: https://archive.ph/20260227013117/https://www.politico.com/news/2026/02/26/incoherent-hegseths-anthropic-ultimatum-confounds-ai-policymakers-00800135

The Verge on Current Deal: https://www.theverge.com/ai-artificial-intelligence/883456/anthropic-pentagon-department-of-defense-negotiations

Anthropic RSP change: https://www.anthropic.com/news/responsible-scaling-policy-v3

Time Magazine on RSP: https://time.com/7380854/exclusive-anthropic-drops-flagship-safety-pledge/

Agent of Chaos Paper: https://x.com/NatalieShapira/status/2026062499599319526

AI Agent Reliability Paper: https://arxiv.org/pdf/2602.16666

My Patreon Video: https://www.patreon.com/posts/real-mystery-ai-151647211

Patreon Documentary: https://www.patreon.com/posts/our-new-age-of-133960279 



Non-hype Newsletter: https://signaltonoise.beehiiv.com/

Podcast: https://aiexplainedopodcast.buzzsprout.com/