Loading video...

Video Failed to Load

There was a problem loading this video. This could be due to a temporary network issue or the video might be unavailable.

Most people are using Fable 5 wrong & overpaying every single day. Anthropic's Head of Labs just showed how to use Fable 5 the right way. He shared the exact workflow they use internally: -Run parallel Claude sessions. -Fable only for planning. -Sonnet for quick questions. -Effort levels for... show more

Roan

59,516 subscribers

19,661 views • 1 month ago •via X (Twitter)

Anya Rossi• Live Now

Private livecam show

0 Comments

No comments available

Comments from the original post will appear here

Related Videos

Anthropic Engineer: "Fable 5 is back, and most people will use it wrong" "You can set up Sonnet 5 and Fable 5 properly in one afternoon and stop overpaying every single day" In 29 minutes, he breaks down each Claude model, why setup matters, and where Fable 5 fits Not every task needs the strongest model Some jobs need speed. Some need reasoning. Some need long agent loops Fable 5 is where the loop work gets interesting: planning, checking, fixing, and running again Most people will upgrade and keep the same messy workflow Power users will route the right task to the right model and save money daily Bookmark and watch this before everyone starts wasting Fable 5

Anthropic Engineer: "Fable 5 is back, and most people will use it wrong" "You can set up Sonnet 5 and Fable 5 properly in one afternoon and stop overpaying every single day" In 29 minutes, he breaks down each Claude model, why setup matters, and where Fable 5 fits Not every task needs the strongest model Some jobs need speed. Some need reasoning. Some need long agent loops Fable 5 is where the loop work gets interesting: planning, checking, fixing, and running again Most people will upgrade and keep the same messy workflow Power users will route the right task to the right model and save money daily Bookmark and watch this before everyone starts wasting Fable 5

rari

20,772 views • 1 month ago

Anthropic engineer: "Most people will use Sonnet 5 and Fable 5 wrong. You can set them up right in one afternoon and stop overpaying every single day." In 31 minutes he shows how to test every model against your real use case and stop overpaying for nothing. Watch the session, then read the guide below on the Claude features 99% of users never find.

Anthropic engineer: "Most people will use Sonnet 5 and Fable 5 wrong. You can set them up right in one afternoon and stop overpaying every single day." In 31 minutes he shows how to test every model against your real use case and stop overpaying for nothing. Watch the session, then read the guide below on the Claude features 99% of users never find.

Anatoli Kopadze

154,529 views • 1 month ago

Turns out Fable 5 isn't expensive, you're just using it wrong. The Claude team just showed how they run it Use Fable 5 as the brain, Sonnet or Opus as the hands. Fable makes one or two calls to set direction, other model does the rest of the work cheap. Near-Fable results at half the cost, from their own benchmarks below Same logic as a good manager: your best person steers the decisions, not every task

Turns out Fable 5 isn't expensive, you're just using it wrong. The Claude team just showed how they run it Use Fable 5 as the brain, Sonnet or Opus as the hands. Fable makes one or two calls to set direction, other model does the rest of the work cheap. Near-Fable results at half the cost, from their own benchmarks below Same logic as a good manager: your best person steers the decisions, not every task

Yarchi

46,359 views • 1 month ago

ANTHROPIC'S HEAD OF ENGINEERING SAYS THEY JUST SHIPPED THE MOST CAPABLE MODELS THEY HAVE EVER BUILT Mythos 5 and Fable 5. Fable 5 can run for days on a single goal and get it right on the first pass, on work that used to need an entire team. Most people use AI to summarize things. The real leverage is the long autonomous task you keep putting off.

ANTHROPIC'S HEAD OF ENGINEERING SAYS THEY JUST SHIPPED THE MOST CAPABLE MODELS THEY HAVE EVER BUILT Mythos 5 and Fable 5. Fable 5 can run for days on a single goal and get it right on the first pass, on work that used to need an entire team. Most people use AI to summarize things. The real leverage is the long autonomous task you keep putting off.

0xMarioNawfal

57,127 views • 1 month ago

This is the best way to use Claude Fable in Claude Code without immediately hitting your limits. 1. Model set to Fable 5 2. Reasoning on Max 3. Instruct Claude to run a dynamic workflow where: 3a. Fable is the orchestrator 3b. Opus does the reasoning heavy phases Fable is so overpowered that you don't need its intelligence for every step. Let it orchestrate Opus or even Sonnet.

This is the best way to use Claude Fable in Claude Code without immediately hitting your limits. 1. Model set to Fable 5 2. Reasoning on Max 3. Instruct Claude to run a dynamic workflow where: 3a. Fable is the orchestrator 3b. Opus does the reasoning heavy phases Fable is so overpowered that you don't need its intelligence for every step. Let it orchestrate Opus or even Sonnet.

Dan McAteer

908,606 views • 2 months ago

Anthropic engineer: "Most people will use Sonnet 5 and Fable 5 wrong. You can set them up right in one afternoon and stop overpaying every single day." In 29 minutes, he breaks down every Claude model, and why running them all the same way is a mistake. Watch the session, then save the config below 👇

Anthropic engineer: "Most people will use Sonnet 5 and Fable 5 wrong. You can set them up right in one afternoon and stop overpaying every single day." In 29 minutes, he breaks down every Claude model, and why running them all the same way is a mistake. Watch the session, then save the config below 👇

darkzodchi

578,362 views • 1 month ago

Anthropic's managed agents team just showed the Fable 5 workflow most people haven't seen Their line was simple: Fable 5 is our best model for running self-improving agent systems" Fable 5 + loops + dynamic workflows + dreaming = self-improving agents 13 minutes Live from Anthropic's Japan stage Built from scratch Worth more than a $500 agent building course Bookmark and watch it before this becomes the default setup

Anthropic's managed agents team just showed the Fable 5 workflow most people haven't seen Their line was simple: Fable 5 is our best model for running self-improving agent systems" Fable 5 + loops + dynamic workflows + dreaming = self-improving agents 13 minutes Live from Anthropic's Japan stage Built from scratch Worth more than a $500 agent building course Bookmark and watch it before this becomes the default setup

rari

32,304 views • 1 month ago

An asian guy just found a way to use Fable 5 forever, even though Anthropic is going to make it access-limited after 12th July. He used Opus 4.8 to host the operating manual of fable 5 with just one single prompt. Access to the best model is never guaranteed. It disappeared once already this year. But you can use it forever. Here's how: 1. Extract the operating manual of Fable 5 2. Create an .md file and save it on your device 3. Create a new project "Fable 5 Brain" in Claude 4. Paste the instructions/ .md file straight into it 5. Run a pressure test to verify Save and bookmark this no matter what:

An asian guy just found a way to use Fable 5 forever, even though Anthropic is going to make it access-limited after 12th July. He used Opus 4.8 to host the operating manual of fable 5 with just one single prompt. Access to the best model is never guaranteed. It disappeared once already this year. But you can use it forever. Here's how: 1. Extract the operating manual of Fable 5 2. Create an .md file and save it on your device 3. Create a new project "Fable 5 Brain" in Claude 4. Paste the instructions/ .md file straight into it 5. Run a pressure test to verify Save and bookmark this no matter what:

Aria Westcott

376,386 views • 1 month ago

99% of people are using Claude Fable 5 wrong. People don't know how to work with it yet because nothing this powerful has ever existed. I'll show you 10+ use cases and startup ideas that can only exist because Fable 5 is here in under 34 minutes.

99% of people are using Claude Fable 5 wrong. People don't know how to work with it yet because nothing this powerful has ever existed. I'll show you 10+ use cases and startup ideas that can only exist because Fable 5 is here in under 34 minutes.

GREG ISENBERG

290,898 views • 2 months ago

Anthropic finally published the prompting playbook for every Claude model. > Prompting Claude Sonnet 5. > Prompting Claude Opus 4.8. > Prompting Claude Opus 5. > Prompting Claude Fable 5. After reading it, one thing is clear. Almost nobody is getting the most out of Claude. It shows exactly how each model should be prompted instead of relying on guesswork. If Claude is in your workflow, bookmark this.

Anthropic finally published the prompting playbook for every Claude model. > Prompting Claude Sonnet 5. > Prompting Claude Opus 4.8. > Prompting Claude Opus 5. > Prompting Claude Fable 5. After reading it, one thing is clear. Almost nobody is getting the most out of Claude. It shows exactly how each model should be prompted instead of relying on guesswork. If Claude is in your workflow, bookmark this.

shmidt

119,698 views • 8 days ago

It's over. In 2 days Fable 5 becomes WAY too expensive for anyone to use You have just 2 more days to make the most out of this incredible model In this video I cover the 5 things you NEED to do with your Fable usage before it disappears forever (will 100x your workflows):

It's over. In 2 days Fable 5 becomes WAY too expensive for anyone to use You have just 2 more days to make the most out of this incredible model In this video I cover the 5 things you NEED to do with your Fable usage before it disappears forever (will 100x your workflows):

Alex Finn

79,534 views • 25 days ago

Head of Anthropic Labs: "Fable is one of those models you'll just remember - like Sonnet 3.5, Opus 4, Opus 4.5. Fable is way smarter than me. It finishes a task, lists its trade-offs, and I have to ask it to explain them to me." in 20-minute talk, the Anthropic head reveals the full capabilities of the Fable 5 model in practice. Watch it now, then read how to use this frontier model in the article below

Head of Anthropic Labs: "Fable is one of those models you'll just remember - like Sonnet 3.5, Opus 4, Opus 4.5. Fable is way smarter than me. It finishes a task, lists its trade-offs, and I have to ask it to explain them to me." in 20-minute talk, the Anthropic head reveals the full capabilities of the Fable 5 model in practice. Watch it now, then read how to use this frontier model in the article below

Movez

33,774 views • 1 month ago

Day 3 of 5 building with Claude Fable 5 before it goes paid. Today: an audit of everything you have already made. 1. Fable 5 reads back through all your past Claude chats 2. It flags what worked, what you dropped, and where value is going to waste 3. It ranks the top 10 fixes by effort against impact 4. Then it hands you a concrete plan for the top 3 5. Run that plan on a cheaper model and save Fable 5 for the thinking Comment FABLE for the full guide. Make sure you follow me so I can DM it to you. Day 4 tomorrow.

Day 3 of 5 building with Claude Fable 5 before it goes paid. Today: an audit of everything you have already made. 1. Fable 5 reads back through all your past Claude chats 2. It flags what worked, what you dropped, and where value is going to waste 3. It ranks the top 10 fixes by effort against impact 4. Then it hands you a concrete plan for the top 3 5. Run that plan on a cheaper model and save Fable 5 for the thinking Comment FABLE for the full guide. Make sure you follow me so I can DM it to you. Day 4 tomorrow.

Charlie Hills

13,617 views • 1 month ago

Claude Fable 5 early tester: "If you're using Fable 5 for everything, that is almost 100% overkill." in 10 minutes, Nate breaks down the six prompting habits that actually get the most out of it here's what he covers: > always give the why, not just the what > negative prompting: tell it exactly what not to do > baking verification loops into every agent and skill file > the one prompt type that silently downgrades you to a weaker model most people are just throwing longer prompts at a more expensive model the ones getting real results changed how they prompt, not how much they spend an article on how to build a fully automated AI company with Claude Fable 5 👇

Claude Fable 5 early tester: "If you're using Fable 5 for everything, that is almost 100% overkill." in 10 minutes, Nate breaks down the six prompting habits that actually get the most out of it here's what he covers: > always give the why, not just the what > negative prompting: tell it exactly what not to do > baking verification loops into every agent and skill file > the one prompt type that silently downgrades you to a weaker model most people are just throwing longer prompts at a more expensive model the ones getting real results changed how they prompt, not how much they spend an article on how to build a fully automated AI company with Claude Fable 5 👇

rewind

11,858 views • 1 month ago

this is f**king gold someone just figured out how to run Claude Fable 5 and GPT 5.6 Sol in the same loop gpt-5.6 came out yesterday. fable 5 leaves in 48 hours. this window has never existed before and never will again. here is how to use it: 1. open claude code. install openai's codex plugin 2. type /model. choose fable 5. 3. drop one ROUTING.md in your repo root (full file in comments). 4.paste the prompt (in comments), write what feature you want. boom. save and bookmark this no matter what. it will be the most productive thing you do this weekend

this is f**king gold someone just figured out how to run Claude Fable 5 and GPT 5.6 Sol in the same loop gpt-5.6 came out yesterday. fable 5 leaves in 48 hours. this window has never existed before and never will again. here is how to use it: 1. open claude code. install openai's codex plugin 2. type /model. choose fable 5. 3. drop one ROUTING.md in your repo root (full file in comments). 4.paste the prompt (in comments), write what feature you want. boom. save and bookmark this no matter what. it will be the most productive thing you do this weekend

Avid

139,979 views • 1 month ago

built an animation template web app right before Claude Fable 5 gets taken down. the idea is simple, pick a template, upload your assets, adjust the ratio, and export. no timeline headaches. no complex settings. just the stuff you actually need. been wanting to build this for a while. wild that I finally created it in the last hours of Fable 5.

built an animation template web app right before Claude Fable 5 gets taken down. the idea is simple, pick a template, upload your assets, adjust the ratio, and export. no timeline headaches. no complex settings. just the stuff you actually need. been wanting to build this for a while. wild that I finally created it in the last hours of Fable 5.

Hey Detya

32,871 views • 1 month ago

Found a way to run Kimi K3 for FREE with daily credits on 😳 it's a 2.8T parameter model. 1M context. beats Fable 5 on coding benchmarks. what you get for $0: -2.8 trillion parameters -1M context window -beats Fable 5 on SWE Marathon (42 vs 35) -beats Fable 5 on Program Bench (77.8) -topped BrowseComp (91.2) -native vision understanding What this replaces: -Paid frontier API costs for coding agents -Fable 5 at $30/M output tokens -GPT-5.6 Sol at $25/M output tokens how to use it (2 min): 1. Go to 2. Sign up with email 3. Start using K3 — it's the default model Also available on desktop app, CLI, and mobile. Important: Free daily credits reset. Full open weights dropping July 27. Rate limits apply on free tier. use this before the free tier gets crowded

Found a way to run Kimi K3 for FREE with daily credits on 😳 it's a 2.8T parameter model. 1M context. beats Fable 5 on coding benchmarks. what you get for $0: -2.8 trillion parameters -1M context window -beats Fable 5 on SWE Marathon (42 vs 35) -beats Fable 5 on Program Bench (77.8) -topped BrowseComp (91.2) -native vision understanding What this replaces: -Paid frontier API costs for coding agents -Fable 5 at $30/M output tokens -GPT-5.6 Sol at $25/M output tokens how to use it (2 min): 1. Go to 2. Sign up with email 3. Start using K3 — it's the default model Also available on desktop app, CLI, and mobile. Important: Free daily credits reset. Full open weights dropping July 27. Rate limits apply on free tier. use this before the free tier gets crowded

painn

253,746 views • 25 days ago

ANTHROPIC LEAKED 6 RULES THAT RUN 8 LOOPS AT ONCE - AND ONE ENGINEER DOES THE WORK OF A TEAM one engineer with this system replaces an entire team - and costs the company 8 times less You → Opus 5 plan → Fable 5 ×8 execute → Fable 5 review → you: 5 min Opus 5 takes your intent and breaks it into subtasks - a bad plan multiplied across every loop gives the same number of disasters - the plan is the only thing you read carefully one repo - isolated worktrees for each loop - nobody stands on anyone's file - parallel PRs ship while you do nothing the agent runs the tests and fixes until green PR - a red build never reaches your eyes one CLAUDE.md for the whole fleet - without it you get different opinions from every loop and one merge hell the average engineer closes 3-4 tasks a day - this system closes a full sprint overnight with zero working hours Fable 5 pre-reviews every PR before it reaches you - you spend 5 minutes - your throughput is now measured in diffs read per hour bookmark and paste into Claude Code - your first fleet can start tonight

ANTHROPIC LEAKED 6 RULES THAT RUN 8 LOOPS AT ONCE - AND ONE ENGINEER DOES THE WORK OF A TEAM one engineer with this system replaces an entire team - and costs the company 8 times less You → Opus 5 plan → Fable 5 ×8 execute → Fable 5 review → you: 5 min Opus 5 takes your intent and breaks it into subtasks - a bad plan multiplied across every loop gives the same number of disasters - the plan is the only thing you read carefully one repo - isolated worktrees for each loop - nobody stands on anyone's file - parallel PRs ship while you do nothing the agent runs the tests and fixes until green PR - a red build never reaches your eyes one CLAUDE.md for the whole fleet - without it you get different opinions from every loop and one merge hell the average engineer closes 3-4 tasks a day - this system closes a full sprint overnight with zero working hours Fable 5 pre-reviews every PR before it reaches you - you spend 5 minutes - your throughput is now measured in diffs read per hour bookmark and paste into Claude Code - your first fleet can start tonight

Sprytix

37,766 views • 14 days ago

FREE CLAUDE FABLE 5 and almost nobody knows this trick Anthropic recently released their most capable model ever - the first Mythos-class model available to the public normally it's $10/$50 per million tokens but there's a hack: GitLab just added Fable 5 to Duo Agent Platform - across ALL tiers, including free trial the setup: 1/ register a GitLab account: 2/ start the free GitLab Duo trial 3/ Fable 5 is live through their AI Gateway 4/ done - Mythos-class model, $0 why Fable 5 is worth the hype: 1/ 80.3% SWE-Bench Pro - 11 points ahead of the next best model 2/ multi-DAY autonomous runs without losing the plot 3/ single-pass implementations of systems that took days of iteration 4/ Karpathy called it 'a major-version-bump-deserving step change' also free on Claude Pro/Max/Team until June 22 - after that it's usage credits you have a limited window to run the most capable public model on the planet for FREE

FREE CLAUDE FABLE 5 and almost nobody knows this trick Anthropic recently released their most capable model ever - the first Mythos-class model available to the public normally it's $10/$50 per million tokens but there's a hack: GitLab just added Fable 5 to Duo Agent Platform - across ALL tiers, including free trial the setup: 1/ register a GitLab account: 2/ start the free GitLab Duo trial 3/ Fable 5 is live through their AI Gateway 4/ done - Mythos-class model, $0 why Fable 5 is worth the hype: 1/ 80.3% SWE-Bench Pro - 11 points ahead of the next best model 2/ multi-DAY autonomous runs without losing the plot 3/ single-pass implementations of systems that took days of iteration 4/ Karpathy called it 'a major-version-bump-deserving step change' also free on Claude Pro/Max/Team until June 22 - after that it's usage credits you have a limited window to run the most capable public model on the planet for FREE

kaize

24,405 views • 2 months ago

Anthropic Head of Product: "Fable 5 is the best model we've ever shipped for agentic work. Our engineers now ship 8x more code than they did in past years." in 42 minutes, the Anthropic team shows how to build self-improving agent systems with Fable 5: managed agents, dreaming, dynamic workflows worth more than a $500 agent building course live from Anthropic's latest stage in Japan, just hours ago i turned everything they showed on stage into a step-by-step guide on building your own agent you can find the full guide below

Anthropic Head of Product: "Fable 5 is the best model we've ever shipped for agentic work. Our engineers now ship 8x more code than they did in past years." in 42 minutes, the Anthropic team shows how to build self-improving agent systems with Fable 5: managed agents, dreaming, dynamic workflows worth more than a $500 agent building course live from Anthropic's latest stage in Japan, just hours ago i turned everything they showed on stage into a step-by-step guide on building your own agent you can find the full guide below

Anatoli Kopadze

81,094 views • 2 months ago