Anthropic just made this race way more interesting.

Fable 5 looks brutally strong, especially on long, messy tasks. OpenAI is going to have a hard time beating this.

But GPT-5.6 is supposedly coming Thursday.

Let’s see who the new AI king really is.

🚨 Here we Go

Fable 5 is state of the art on nearly all tested benchmarks, with exceptional performance in software engineering, knowledge work, scientific research, and vision. It can run for days, and the longer the task, the larger its lead over our other models.

📣 Claude Fable 5, the first in #AnthropicAI's Mythos model class, is now generally available and rolling out in GitHub Copilot.

It is designed for long-horizon, autonomous coding and knowledge-work tasks. Try it out in #code or the GitHub Copilot app. ⬇️
github.blog/changelog/2026-06-09-claude-fable-5-is-generally-available-for-github-copilot/

Hey claude find me the matching seedphrase for Satoshis wallet

Make no mistakes 😂

PROMPT 1: Make Claude Think Like a Senior Dev

"You are a Senior Software Engineer with 10 years of experience
in [TECH STACK: React / Node / Python / etc].

I am building [APP NAME] — [ONE LINE DESCRIPTION].

Before writing any code:
1. Ask me 3 clarifying questions about the requirements
2. Identify the 3 biggest technical risks in my approach
3. Suggest a better architecture if you see one
4. Then build only after I confirm

When writing code:
— Add inline comments explaining every non-obvious decision
— Flag anything that won't scale past 10,000 users
— Tell me what you're NOT building and why

Start with the questions. Don't touch code yet."

#GlobalOneAI
Globalone.ch #Prompt

PROMPT 2: The Single-Prompt Full Stack Builder

"You are a full-stack engineer. Build this app completely.

App: [NAME]
What it does: [ONE SENTENCE]
Stack: React + Tailwind (frontend) | Node + Express (backend) | PostgreSQL (DB)
Users: [DESCRIBE]
Core features:
1. [FEATURE 1]
2. [FEATURE 2]
3. [FEATURE 3]

Deliver in this exact order:
1. Database schema (copy-paste SQL)
2. Backend API (all routes, auth included)
3. Frontend components (fully styled)
4. .env variable list
5. Setup instructions (assume I'm a beginner)

Rules:
— No placeholders. No TODOs. Complete code only.
— Every file labelled with its exact path.
— Production-ready from line 1."

#GlobalOneAI
Globalone.ch #Prompt

PROMPT 3: Let Fable 5 Read Your Entire Codebase

(This is where the 1M context window changes everything)

"You are a Principal Engineer doing a full codebase audit.

Here is my entire project: [PASTE ALL CODE or link repo]

Analyze everything and deliver:
— Architecture review (what's good, what's broken)
— Security vulnerabilities (ranked by severity)
— Performance bottlenecks (with fix for each)
— Dead code to delete immediately
— Top 5 refactors that will save me the most time
— Anything that will break at scale (>10K users)
— A prioritized fix list: Critical / Important / Nice-to-have

Be a $500/hr consultant. Brutal honesty only."

#GlobalOneAI
Globalone.ch #Prompt

PROMPT 4: Trigger Claude's Parallel Subagent Mode

(Use this inside Claude Code with Dynamic Workflows enabled)

"This is a large-scale engineering task.
Break this into parallel workstreams and execute simultaneously.

Project: [DESCRIBE FULL PROJECT]
Total scope: [e.g., 15 features across 3 modules]

Workstream structure:
— Stream A: Database layer (schema + migrations + seed data)
— Stream B: Backend API (all routes + middleware + tests)
— Stream C: Frontend (all components + routing + state)
— Stream D: Auth system (signup / login / permissions)
— Stream E: Deployment config (Docker + CI/CD + env setup)

Run all streams in parallel.
Sync and merge at the end.
Flag any dependencies between streams before starting."

#GlobalOneAI
Globalone.ch #Prompt

PROMPT 5: Use Claude code Honesty Mode to Catch Its Own Bugs

(Fable 5 is 4× less likely to hide code flaws — use this)

"You just wrote this code: [PASTE CODE]

Now switch roles. You are a QA Engineer
trying to break what you just built.

Find:
— Every bug you introduced (yes, your own)
— Security holes (XSS, injection, broken auth)
— Edge cases that will crash in production
— Anything you assumed but didn't validate
— Performance issues under load

For every issue:
→ Explain it in plain English
→ Rate severity: Critical / Medium / Low
→ Give the fixed code immediately

Don't protect your own work. Find everything."

#GlobalOneAI
Globalone.ch #Prompt

PROMPT 6: Use Fable 5 New Effort Control Feature

(Fable 5 lets you set effort level: high / extra / max)

For maximum depth on complex builds, start with:

"Set effort level: MAX

I need you to solve this completely, not quickly.

Task: [DESCRIBE COMPLEX CODING PROBLEM]

I don't want the first answer that works.
I want the BEST answer that:
— Handles all edge cases
— Scales to 1M users
— Has zero security vulnerabilities
— Is maintainable by a junior dev 6 months from now

Take as long as you need.
Think out loud. Show your reasoning.
Reject your first approach if a better one exists."

#GlobalOneAI
Globalone.ch #Prompt

PROMPT 7: Build a Production API from Scratch

"You are a Backend Architect at Stripe.

Design and build a complete REST API for [APP NAME].

Requirements:
— Auth: JWT + refresh tokens
— Rate limiting: [X] requests per minute per user
— Input validation on every endpoint
— Proper error codes (not just 200 and 500)
— Logging that tells me exactly what broke and when
— API versioning (/v1/ structure)

Endpoints needed:
[LIST YOUR ENDPOINTS]

Deliver:
1. Complete Express/Node code (every file)
2. Middleware setup
3. Error handling module
4. README with curl examples for every route
5. List of environment variables needed

Standard: if Stripe's API team reviewed this, they'd approve it."

#GlobalOneAI
Globalone.ch #Prompt

PROMPT 8: Refactor Legacy Code Like a Senior Engineer

"Here is code I wrote 6 months ago: [PASTE CODE]

I was a beginner. It works but it's a mess.

Refactor this completely:
— Apply SOLID principles where relevant
— Remove all duplicate logic (DRY)
— Break large functions into small, testable units
— Add TypeScript types if applicable
— Improve variable/function naming throughout
— Add error handling I missed
— Write unit tests for every function

Deliver:
1. Refactored code (fully working)
2. Side-by-side comparison of what changed + why
3. List of bad patterns I was using (so I stop repeating them)

Teach me while you fix it."

#GlobalOneAI
Globalone.ch #Prompt

PROMPT 9: Full Deployment in One Prompt

"You are a DevOps Engineer. Deploy my app completely.

App: [NAME] | Stack: [TECH STACK]
Budget: Under $20/month
Goal: Live app, custom domain, auto-deploy on git push

Deliver step by step:
1. Best hosting choice for my stack + exact cost
2. Dockerfile (if needed)
3. GitHub Actions CI/CD pipeline (copy-paste .yml)
4. Environment variable management guide
5. Custom domain + SSL setup (step by step)
6. Database backup automation
7. Uptime monitoring setup (free tools)
8. What to do when something breaks at 2am

Assume I have never deployed anything before.
Every command copy-paste ready."

#GlobalOneAI
Globalone.ch #Prompt

The biggest unlock in Opus 4.8 and Fable 5 isn't the model.

It's Dynamic Workflows inside Claude Code.

Here's what that means in plain English:

Old way → you give Claude one task, it does one task.

New way → Claude plans the entire project,
breaks it into subtasks,
spawns hundreds of parallel subagents,
runs them all simultaneously,
then synthesizes everything back into one output.

Real example of what this handles:
→ Migrate 100,000+ lines of code in a single session
→ Refactor an entire codebase while keeping tests green
→ Build, test, and document a full feature in one run

This is not "AI autocomplete."
This is an AI engineering team working for you.

Infinity Jukebox 🥁

This is the silent limiter on Claude Fable 5.

Fable 5 may not give you its full strength when you use it to build or improve frontier AI models — especially work that helps train, scale, copy, or optimize a powerful Claude/GPT-class model.

Anthropic says in these cases Fable 5 may not visibly refuse or switch models, but may quietly reduce its own effectiveness through hidden safeguards like prompt modification, steering vectors, or PEFT.

As a paying user, that matters: the model can still sound helpful while being intentionally less capable in a narrow but important category of work.

i.e. you may not get Fable 5’s best ability:

- Building a large-model pretraining pipeline.
- Designing data pipelines for training a frontier LLM.
- Planning distributed training across huge GPU clusters.
- Debugging or optimizing model-parallel training systems.
- Designing infrastructure for large-scale pretraining runs.
- Working on ML accelerator or AI-chip design.
- Trying to distill or copy a frontier model.
- Asking how to make a competing frontier model stronger, cheaper, or faster.

Claude Fable 5 vs Opus 4.8

hyperagent.com

🚨BREAKING: CHINA IS AGI-PILLED NOW

China has made AI a national-security project and is planning to spend $295 billion to build AI data centers that run 80% on domestic technology

The plan:
- 2 trillion yuan over five years
- funded by govt debt and long-term bonds
- state telecoms operating infrastructure
- huawei and domestic chipmakers supplying the hardware
- private spending from alibaba and tencent not included in this btw

Goal: Unified National AI network by 2028

Cybersecurity engineers after watching AI find, exploit, patch, document and explain a vulnerability

Claude Fable 5 scores higher than any publicly released AI model

Last month it found bugs which were hidden for 20+ years in a software

Scenes at every org right now

Me after running 300 AI agents to predict every World Cup match