(Photo: Andrej Sokolow/picture alliance via Getty Images)

Anthropic releases Claude Fable 5, a locked-down, safer version of Mythos

Claude Fable 5 will cost twice as much as Claude Opus 4.8, Anthropic’s current flagship model. The company also released Claude Mythos 5, but only for trusted partners for testing.

Jon Keegan

Today Anthropic released the first public version of its next-generation AI model, Claude Fable 5. The company also announced Claude Mythos 5, but only for the small group of partners that are currently testing the new model. Both models are described as “Mythos-class” models by Anthropic.

In a press release, the company wrote:

“Fable 5’s capabilities exceed those of any model we’ve ever made generally available. It is state-of-the-art on nearly all tested benchmarks of AI capability, showing exceptional performance in software engineering, knowledge work, vision, scientific research, and many other areas. The longer and more complex the task, the larger Fable 5’s lead over our other models.”

According to the company, Claude Fable 5 is heavily locked down, and is built with guardrails to keep it from being used to orchestrate the kind of novel cyber attacks that Anthropic had said it was capable of, a warning that set off a world-wide cybersecurity freak-out. Anthropic released benchmarks showing the models achieving substantially high scores on benchmarks for agentic coding, compared to leading models form OpenAI and Google.

While the company says Claude Fable 5 has been essentially kneecapped to remove the most potentially dangerous capabilities (it will defer any cybersecurity, biology and chemistry, or model distillation requests to Claude Opus 4.8), that hasn’t stopped Anthropic for charging a premium for the new models. According to the company, both Fable 5 and Mythos 5 will cost twice as much as Claude Opus 4.8, the current flagship model.

The release comes at a crucial moment for the company, as it recently filed confidentially for an IPO expected this year, and closed a funding round valuing it at $965 billion.

Yesterday, OpenAI filed confidentially for a IPO, and both are expected to be among the largest IPOs in history.

This is a developing story.

Rani Molla2h

Amazon shatters record in Canada’s “maple bond” market

Amazon has set a record in the Canadian corporate bond market by issuing CA$14 billion ($10.04 billion) of Canadian dollar-denominated notes, according to a new Securities and Exchange Commission filing. The five-part deal officially eclipses the previous record of CA$8.5 billion established just last month by Alphabet.

This massive push comes as hyperscalers aggressively diversify funding to bankroll historic AI capital expenditure, a strategy mirrored by Alphabet’s parallel expansion into European debt markets to fuel its soaring infrastructure demands.

Man using smartphone, his head is replaced with a huge brain

Apple wants to finally give smartphones a brain

Releasing the iOS 27 developer beta is a start, but Siri can’t rescue us from app overload until it can run the third-party apps we actually use.

Rani Molla5h

Jon Keegan22h

OpenAI files confidentially for IPO

Today OpenAI announced it has filed confidentially with the SEC to go public. The company said in a blog post that it filed the draft S-1 form.

OpenAI’s filing comes a week after archrival Anthropic — now valued at $965 billion — also filed a confidential S-1 for its own public offering. Both IPOs are expected to be among the largest in US history.

In a press release, OpenAI wrote:

“We expect it to leak so we’re just announcing it. We have not decided on timing yet; it may be a while because there are things we want to do that are likely easier as a private company. But it’s a complicated set of tradeoffs and this gives us the option to go public sooner if that ends up being best.”

Confidential submission of draft S-1 to the SEC

In a press release, OpenAI wrote:

“We expect it to leak so we’re just announcing it. We have not decided on timing yet; it may be a while because there are things we want to do that are likely easier as a private company. But it’s a complicated set of tradeoffs and this gives us the option to go public sooner if that ends up being best.”

Rani Molla, Jon Keegan

24h

Siri AI is going to be great for Apple — if it works. Sound familiar?

At Apple’s developer conference, the company announced a better, faster, stronger Siri... again.