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Blackstone Warns Anthropic Likely to Receive Junk Credit Rating After IPO

October 30, 2026 at 12:57 EDT

Funding & M&A
Finance

Blackstone has reportedly warned investors that Anthropic, the artificial intelligence company behind the Claude models, is likely to receive a high-yield, or "junk," credit rating following its initial public offering.

Credit outlook · Anthropic IPO

Blackstone reportedly warns Anthropic is likely to receive a junk credit rating after its IPO

The warning suggests credit analysts may view Anthropic's debt as carrying higher default risk than investment-grade issuers, which would mean higher borrowing costs as frontier AI labs seek capital for compute, training and talent.

How a junk rating could flow through

Step 1

Heavy capital needs for data centers, chips and training

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Step 2

Junk rating signals higher default risk

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Step 3

Bonds must offer higher interest to attract buyers

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Step 4

Institutional investors weigh the offering

What the report says

A junk rating typically means bonds are seen as speculative
Such bonds usually must pay higher interest rates
The view is a forecast, not a formal rating decision

Not yet confirmed

Which rating agency would act
Anthropic's current debt load
When the IPO would take place

What could change the picture

A rating outlook is a forecast, and it can shift once the detailed filings are public.

Audited financials

Clarify leverage and earnings quality

Bond structure

Shows terms, pricing and seniority of debt

IPO prospectus

Details capital plans and spending commitments

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