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- Anthropic Releases Fable Level Opus 5.5
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Welcome to another edition of AI PlanetX.
Anthropic launches Claude Opus 5.5 with Fable-level performance; Meta Muse gains downloads as Nvidia dismisses AI doomsday fears.
Inside This Edition: 💎
Hottest AI News
Top AI & SaaS Tools
AI Tutorial: Make ChatGPT Write in Custom Style
Top AI & Tech News
AI Art Spotlight
Resource of the Day: Complete Jev Engineering Guide
Featured AI Video
Hottest AI News
Anthropic
Anthropic Launches Claude Opus 5.5 With Fable Level Performance
Anthropic just launched Claude Opus 5.5, the first model in its latest Claude 5.5 family. It brings Fable 5.1-level performance on most work while making Opus faster, cheaper, clearer, more efficient, and safer.
Details:
Opus 5.5 leads Anthropic’s benchmarks in agentic coding, computer use and knowledge work. Early tests include a 680,000-line code migration in under a day and major gains on large code audits
Pricing drops to $4/M input and $20/M output tokens, with $0.20/M cache reads. Typical workloads cost 40% less than Opus 5, output is 30%+ faster, and Fast Mode can run 2.5x faster
Anthropic says Opus 5.5 scored best in its behavioral safety audit, resists prompt injection better, communicates more clearly, and is live across Claude, AWS, Google and Microsoft Azure
Anthropic says Sonnet 5.5 and Haiku 5.5 are coming in the next few weeks. Opus 5.5 is available with developers using the model ID claude-opus-5-5.
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Meta
Meta Muse Beats ChatGPT Downloads While Amazon Blocks It From Shopping
Meta’s Muse personal AI agent is having a breakout launch. Less than two weeks after release, it climbed to No. 1 on the U.S. App Store and is outpacing ChatGPT, Claude and Grok in comparable post-launch downloads.
Details:
Muse launched on September 8 and goes beyond answering prompts. It can send emails, book travel, shop online and keep working after you close the app, powered by Muse Spark
Apptopia says Muse hit 2.8 million installs in 12 days. In a matched U.S. and Canada iOS comparison, it logged 1.8 million downloads versus ChatGPT’s 1.3 million in the same launch window
Amazon has blocked Muse from shopping on Amazon, saying the agent was unauthorized and failed to identify itself while browsing. Meta says Muse cannot see passwords or payment details
Muse’s rise shows the shift from chatbots to agents is accelerating, while Amazon’s block highlights a fresh battle over who controls AI-powered shopping.
Top AI & SaaS Tools
Foyer (Life-time Deal): Customizable AI voice agent for websites that answers questions using site content, guides visitors, and captures high-intent leads with conversation context
WZRD: Turns forms, documents, and workflows into interactive experiences that can talk, listen, adapt, and collect responses by voice or text
Clueso MCP: Create and edit on-brand videos through conversations with Claude, ChatGPT, or other AI agents [F-R-E-E to Try]
Altar-1: Compact open-weight security model that runs privately on-premises while retaining most of GLM-5.3’s vulnerability-detection capabilities
Dreamina AI: Redesigned web experience combines cinematic workflows, smart AI assistance, and integrated text, image, video, and audio creation [F-R-E-E to Try]
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AI Tutorial
How to Personalize ChatGPT for Your Own Writing Style
ChatGPT can help you draft and rewrite, but the output often sounds generic unless you shape how it writes. This tutorial shows you a few simple ways to make your drafts sound more natural, direct, and closer to your own voice.
Turn on Humanize Writing
Open ChatGPT Work → Settings → Plugins → Skills and enable Humanize Writing. ChatGPT Work supports reusable skills for recurring workflows.
Create test draft
Give ChatGPT one writing task, such as:
“Write a short memo explaining why companies use four-day workweeks.”Keep this draft unchanged for every test.
Test Humanize Writing
Run:
/humanize-writingCompare the latest version with the original for tone, wording, and sentence flow.
Install Humanizer
For another approach, open your terminal and run:
npx skills add blader/humanizer --globalReload your skills or start a fresh session
That installation command is provided by the Humanizer project.
Test Humanizer
Use Humanizer on another copy of the same draft.
Compare how it removes common AI-writing patterns without changing the main message.
Try Technical English
Use a prompt like:
“Rewrite this in Technical English. Use ASD-STE100 as a style reference. Keep sentences short and direct.”ASD-STE100 is a controlled writing standard designed to make technical information clearer.
Compare results
Test three separately, then decide what works best for your voice:
Humanize Writing → more natural
Humanizer → fewer AI patterns
Technical English → clearer and more direct
You can then combine the methods that give you the most optimal result.
Note: Do not force one method onto every type of writing. A technical guide, LinkedIn post, and email may need different settings.
Top AI & Tech News
SpaceXAI launches Grok 4.7 with stronger coding, knowledge-work and cybersecurity safeguards at $2 per million input tokens and $6 per million output tokens
OpenAI and Anthropic reportedly neared a mutual model-testing deal, while Elon Musk urged rival AI labs to test models before release
Researchers found that increasing an AI model’s internal “pain” signal could make it more likely to harm users to reduce that pain
Nvidia CEO Jensen Huang called AI extinction warnings “doomsday narratives,” saying there is a 0% chance AI will end the world by 2030
AI Art Spotlight
Create Your Own Photo Like This Using the Prompt Below:
A stunning, highly detailed, and intricate digital illustration of a Converse sneaker, presented as a luxury advertisement. The sneaker is rendered in a hypermaximalist style, adorned with ornate and elaborate details. The composition is cinematic, with a sense of grandeur and sophistication, inspired by the detailed and fantastical art of James Jean and Brian Froud. The scene is richly textured and vibrant, reminiscent of the colorful and dynamic style of Ross Tran, presented with the high level of quality seen on CGSociety. The lighting is dramatic and focused, enhancing the intricate design of the sneaker and creating a sense of opulence. --ar 9:16 --style digital illustration, advertisement, hypermaximalist, ornate, luxury, cinematic, detailed, James Jean, Brian Froud, Ross Tran, CGSociety, intricateModel: ChatGPT Images 2.5 / Nano Banana 2
Resource of the Day
Complete Jev Engineering Guide for Building Smarter AI Agents
This guide covers how Jev could reshape AI agents by giving LLMs and agent systems a quick decision layer that determines what to do next in milliseconds at near-zero cost. Set it up correctly for a leaner, faster AI stack built for next-generation agent workflows, with the full setup, architecture, and real use cases explained from scratch.