Anthropic files for an IPO as OpenAI introduces a lower-priced model
Anthropic filed a registration statement for a proposed IPO, while OpenAI introduced GPT-6.1 Sol with lower pricing than GPT-6 Astra.

Key takeaways · 4
- 01
Anthropic filed for a proposed IPO and intends to list on Nasdaq under ANT; the share count and price range are not set.
- 02
OpenAI’s listed GPT-6.1 Sol API prices are $2 per million input tokens, $0.10 per million cached input tokens and $10 per million output tokens.
- 03
GPT-6.1 Sol is available to specified paid and organizational users in ChatGPT Work and Codex, but not yet in Chat.
- 04
Parekh reported that Rippling’s coding-work share shifted from Anthropic to OpenAI between May and a later, unspecified point.
Anthropic’s proposed public offering
Anthropic filed an S-1 registration statement for a proposed IPO of its Class A common stock and intends to list the shares on the Nasdaq Global Select Market under the symbol ANT.[1] The company had not set the number of shares or the price range, and the registration statement had not yet become effective.[1] Anthropic says its purpose is the responsible development and maintenance of advanced AI for humanity’s long-term benefit.[2] These are preliminary filing details, not a finalized offer price or share count.[1]
OpenAI’s model and price details
OpenAI introduced GPT-6.1 Sol as an upgrade to GPT-6 Sol, saying it nearly matches GPT-6 Astra on agentic coding, computer use and professional work.[4] OpenAI says Sol costs one-fifth as much as Astra at standard input and output token prices.[4] Its standard API rates are $2 per million input tokens, $0.10 per million cached input tokens and $10 per million output tokens.[4] OpenAI said the model was available to Plus, Pro, Business, Enterprise and Edu users in ChatGPT Work and Codex, but not yet in Chat; developers can access it through the API as gpt-6.1-sol.[4] OpenAI also reported fewer factual-error responses, from 11.4% to 7.7%.[4]
Spending shifts and cloud growth
Parekh reported that Anthropic’s share of coding work at Rippling fell from 57% in May to 18%, while OpenAI’s share reached 52%.[3] He also reported that Replit moved most AI spending after receiving a discount above 30% on a contract worth more than $100 million, and that OpenAI offered some other customers discounts of 40%.[3] The roundup reported Google’s third-quarter revenue up 25% to about $128 billion and Google Cloud revenue up 103% to $30.7 billion.[3] Microsoft revenue rose 19% to about $92 billion, while Azure grew 48% to $33.2 billion.[3] CNBC reported AWS revenue of $45.98 billion, up 39% year over year.[5] These reported figures make pricing and workload allocation relevant areas for enterprise review.[3]
The filing and model pricing give professionals concrete items to track: IPO terms are still unsettled, while GPT-6.1 Sol’s listed rates and availability can inform a cost-and-access review. Reported shifts in company spending suggest procurement decisions may affect which AI providers receive workloads.
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2 November 2026
Anthropic files for an IPO as OpenAI introduces a lower-priced model
Sources
- Anthropic files S-1 with the SEC for proposed initial public offering \\ Anthropicanthropic.com
- The registrant has redacted provisions or terms of this exhibit pursuant to Regulation S-K Item 601(b)(10)(iv). While portionssec.gov
- AI: Anthropic’s S-1, the Cloud Gang Reports, OpenAI’s Price Push & More. AI-RTZ #1256michaelparekh.substack.com
- Introducing GPT-6.1 Sol | OpenAIopenai.com
- AWS Q3 earnings report 2026cnbc.com