If you’re about to ask investors for $100 billion, it’s a good time to have something new to sell.
Anthropic today launched Claude Fable 5.2 and its unrestricted counterpart, Mythos 5.2, with the company claiming another significant leap in performance at a lower price. The first impression isn’t great, as it doesn’t look like a big leap forward.
The timing is notable as Anthropic prepares for what could be the largest IPO in history, potentially raising $80 billion to $100 billion at a valuation of as much as $1.75 trillion.
The company says the new models outperform Opus 5.5 on nearly every benchmark it tested, including a win over OpenAI’s GPT-6 Astra in agentic coding. Fable 5.2 scored 69.9% on FrontierSWE v2 compared to 65.5% for Astra.
From the PR:
Testers have found that Fable 5.2 and Mythos 5.2 communicate more clearly than past Fable and Mythos models. They generate outputs up to 30% faster than Claude Fable 5.1 and Claude Mythos 5.1, and they’re available at a lower price: $8 per million input tokens and $40 per million output tokens.
That’s about 20% cheaper than the prior benchmarks.
For investors, the price cut might be the most important part of the announcement.
One of the biggest questions surrounding the AI trade is whether the economics ultimately work. There’s little doubt about demand but the costs of delivering increasingly powerful models remain enormous.
Anthropic says Fable 5.2 running at High effort can match Opus 5.5 at Max effort on coding tasks at roughly half the cost.
That’s a meaningful improvement and it fits with what we’ve seen throughout the AI boom but it’s not some kind of revolution that will get the market frothing for hte IPO.
Anthropic also says Claude now writes more than 90% of the code merged into its own core codebase. That’s the kind of statistic that will feature prominently in an IPO roadshow.
There are also signs that the economics are improving. Compute costs have fallen from 172% of revenue to 57% over the past year. That remains an expensive business, but it’s a dramatic improvement and one that suggests there’s more to come.
This article was written by Adam Button at investinglive.com.