TodoAI is a leading Israeli AI agency offering lectures, hands-on workshops, consulting and one-on-one mentoring for businesses and individuals. We also build custom AI and automation systems with measurable ROI.

Business owners, managers, teams, content creators, marketers, students, and anyone who wants to understand how to bring AI tools into their day-to-day work or their business.

TodoAI was founded by Eitan Elnekave (an entrepreneur with 8 years in tech, an expert in building AI and automation systems) and Avihai Elnekave (a content creator running a community of 30,000+ Instagram followers, specializing in AI-generated images and video).

What business results does TodoAI deliver for clients?

Documented results from existing clients: 2–3 hours a day saved per employee, tens of thousands of shekels a month saved on operational errors, new lead channels created through automated video content, and sales teams freed to work only on hot leads after AI qualification.

How do I get in touch with TodoAI?

You can reach us directly on WhatsApp at +972-54-941-0058 (https://wa.me/972549410058), follow @todoai.il on Instagram, or join our WhatsApp community for weekly updates.

Is TodoAI a fit for small businesses, or only large organizations?

Both. We work with large organizations that need workshops for dozens of employees and complex AI systems, and equally with freelancers and individuals who want one-on-one mentoring and practical everyday AI use.

What language does TodoAI deliver lectures and workshops in?

The primary language is Hebrew, but content can also be delivered in English on request.

Claude Fable 5: Anthropic's new model, Claude Mythos 5 and Fable 5, and why it's worth pausing before getting excited

9 June 20266 min read

If you came looking for "Claude Fable" or "the new Claude model", this is the post you wanted: on 9 June 2026 Anthropic released not one model but two, and your feed is already filling up with dramatic headlines. We at TodoAI looked at what actually happened here, how good the public version really is, and the one thing worth remembering before you get completely hooked.

The two models are called Claude Mythos 5 and Claude Fable 5, and both sit on the same technological base. The difference between them is mainly a matter of access and safety: one is open only to a few, and the other is open to the general public with built-in brakes.

Let's say up front: the public version, Fable 5, really is a step change, and we'll look at examples shortly. But precisely because we work with Claude every day, it matters to us to also say what's worth being careful about.

Anthropic's two new models, the restricted Claude Mythos 5 and the public Fable 5 — Two tracks for the same model: one locked, one open

What is Claude Fable, and what did Anthropic actually release?

Claude Mythos 5 is the powerful, restricted version. Access is given only to selected cybersecurity teams and biology researchers, through a program called Project Glasswing. According to the report in The Verge, the model is capable of independently finding and chaining complex security weaknesses, which is why it wasn't opened to everyone.

Claude Fable 5 is the public twin. It's the same model, but with a safety layer that blocks high-risk areas (cyber and biology), and in those cases it falls back to a safe Claude Opus 4.8 answer. According to the report in WIRED, the developer price is $10 per million input tokens and $50 per million output tokens, roughly double the price of Claude Opus 4.8.

You may see the name written several ways, in Hebrew and in English alike. They all refer to the same new public Claude model, built to give more power on complex tasks but with a tougher safety layer in sensitive areas.

What	Claude Mythos 5	Claude Fable 5	Claude Opus 4.8
Who for	Cyber and biology teams only	General public, paying subscribers	Existing users
Safety brakes	Minimal	Blocks risk areas, falls back to Opus 4.8	Standard
Price	Not applicable to the public	High, roughly double Opus	The existing price

And what do people who have tried it say?

Here we should be honest: the capabilities are impressive. Early users who put Claude Fable 5 on real tasks report a step change, even compared with the advanced Opus 4.8, especially in writing code and building complete products.

One of the most striking things is the autonomy: the model can take a complex task and run at it alone over a long stretch, sometimes hours, with no human hand steering it at every step. It plans, writes, checks itself and corrects, until the task is finished.

An example that went viral on X: the creator Chris asked Fable 5 simply to build a Minecraft clone, and the model produced a working game in one shot in about 20 minutes, with several biomes, a day and night cycle, ore types and caves. See for yourself:

A demo posted by the creator Chris on X: a Minecraft version built with Claude Fable 5

On the other hand, there's a cost. The model burns through usage allowance very fast, and one user summed it up perfectly:

"Fable 5 is insanely good but watch your usage, I was burning 2% a minute on 20x"

In other words, even on the powerful 20x plan you can burn a large chunk of your allowance within minutes. The model is excellent, but it isn't something to run on autopilot for every small task.

Why not just settle on one model?

And precisely when a model is this good, it's important not to lose your head. Over-dependence on Claude, or on any single vendor, is a real risk: the moment costs rise or something changes at the vendor, an organization that built its entire product around one model can find itself locked in, with no comfortable way out.

The field moves fast, and the picture can change completely within months. So the healthy approach is to enjoy Claude Fable 5 for fast, high-quality work, but to design your product so models can be swapped easily, whether through the big cloud providers or through open models running locally (for example with LM Studio or Ollama, or through OpenRouter). The rule is simple: don't put all your eggs in one basket.

Frequently asked questions

What is Claude Fable?
Answer: Claude Fable 5 is the public version of Anthropic's new model, released alongside the restricted Claude Mythos 5.

What is the new Claude model?
Answer: the new Claude model is really two tracks: Claude Mythos 5, which is restricted to cyber and biology teams, and Claude Fable 5, the public version with a safety layer.

What's the difference between Claude Mythos 5 and Fable 5?
Answer: it's the same base model. Mythos 5 is the powerful version restricted to cyber and biology teams, and Fable 5 is the public version with safety brakes that block risk areas and fall back to Opus 4.8.

How much does Claude Fable 5 cost?
Answer: according to reports the developer price is $10 per million input tokens and $50 per million output tokens, roughly double the price of Opus 4.8. Regular users should check the subscription limits inside Claude before running long tasks.

Should my organization move to Fable 5 now?
Answer: not necessarily. For most business tasks Opus 4.8 is more than enough. Before committing to an expensive new model, make sure your product isn't locked to a single vendor.

What are open models and why use them?
Answer: these are models you can run yourself, locally or through a provider of your choosing, without depending on one company. They give you control over costs, over privacy, and over how easily you can switch.

Good luck,
TodoAI