EL7.AI
StocksMedium•9 November 2026•
4 min read

Anthropic launches two new models 30% faster at lower prices ahead of proposed IPO

Key Facts

1Anthropic launched Claude Fable 5.2 and Claude Mythos 5.2 on November 9.
2The company says the releases are up to 30% faster; the base price is $8 per million input tokens and $40 per million output tokens.
3Anthropic recorded revenue of $33.2 billion in the first nine months of the year, against a net loss of $104 billion.
4Anthropic filed an S-1 registration statement on October 26 and intends to list under the ticker ANT; it has not specified the number of shares or the price range.

Anthropic announced the launch of Claude Fable 5.2 and Claude Mythos 5.2 on November 9, saying the releases bring improvements in coding, reasoning and vision. The announcement comes as the company moves ahead with a proposed initial public offering, after filing a registration statement with the U.S. Securities and Exchange Commission on October 26. The company intends to list its Class A shares on the Nasdaq Global Select Market under the ticker ANT. It has not yet specified the number of shares to be offered or the price range. Anthropic said that "Fable and Mythos are the same underlying model," but differ in their security safeguards and access terms.

According to the company, the two versions produce outputs up to 30% faster than Fable 5.1 and Mythos 5.1. The base price is $8 per million input tokens and $40 per million output tokens. Anthropic also offers an optional fast mode that increases token generation speed by up to 2.5 times. The mode costs $16 per million input tokens and $80 per million output tokens. The company described the base prices as lower and tied the speed comparison to the immediately preceding releases.

In Anthropic's internal RoboDojo Sim test for a two-armed robot, Fable 5.2 scored 64.9% at the highest effort level, according to figures published by the company. Anthropic said the result surpassed 29.8% for GPT-6 Astra and 27.6% for Fable 5.1. It described the new model's performance as more than double the two cited results. The comparison measures performance on a specific robotic simulation task, while the figures published here did not include a corresponding result for Mythos 5.2. Anthropic says the broader improvements include coding, reasoning and vision.

Anthropic says Fable 5.2 includes cybersecurity and biology safeguards that allow it to be offered to all users. The company said these safeguards explain the release's broad availability, even though Fable and Mythos are based on the same underlying model. Access to Mythos 5.2 is limited to eligible organizations that have passed verification programs. Claude Enterprise customers can use Mythos in Claude Security. The company is thus separating the general availability of one model from conditional institutional access to the other.

The company said Fable 5.2 is available on all platforms on launch day, including Amazon Web Services, Google Cloud and Microsoft Azure. This distribution gives users of major cloud services a way to access the new release from the day of the announcement. Access to Mythos, by contrast, remains tied to passing the verification programs set by Anthropic. The announced institutional use includes Claude Security for Claude Enterprise customers. The company did not give an additional timetable for expanding Mythos availability in its launch announcement.

Financial figures cited by the Associated Press from an update to the IPO filing show revenue growth alongside large losses. Revenue reached $33.2 billion in the first nine months of the year, against a net loss of $104 billion over the same period. On a quarterly basis, the company posted revenue of $17 billion and a net loss of $23.3 billion in the latest three months covered by the update. The news agency also said revenue in the first nine months grew 13 times. According to the agency, the filing does not specify how much Anthropic aims to raise or the share price.

Anthropic has pledged to spend $895.4 billion on computing and AI infrastructure, including data centers, according to figures cited by the Associated Press. Spending of $70 billion under these commitments is due in the twelve months following the filing update. The commitments underscore the scale of spending tied to expanding the infrastructure needed to run its AI business, alongside the losses reported in the financial update. In the market, Reuters reported on November 5 that technology stocks had their steepest relative decline in a year, amid investor concerns about the timing of Anthropic's IPO, volatility and geopolitical uncertainty. An investment manager said the sector underperformed the S&P 500 by 10.7 percentage points in the previous month, the widest gap since May 2002.

Anthropic filed an S-1 registration statement on October 26, but did not specify the number of shares or the price range in that announcement. Four days earlier, Reuters reported that Anthropic remained the only company on the technology IPO calendar for fall 2026, after other AI infrastructure and data center companies postponed their listings amid rising interest rates and market volatility. This backdrop combines the company's progress on the offering with an IPO market Reuters described as shrinking. The filing update, according to the Associated Press, did not disclose the target fundraising amount or share price. The ticker ANT and intended listing venue remain the details the company has announced so far.