E220: OpenAI tender eyes $500b valuation; OpenAI offers govt ChatGPT for $1; OpenAI releases open-weight models; OpenAI launches GPT-5 model; Bullish targets $4.23b IPO valuation; n8n raises at $2.3b pre-money; Figure Technology files $3.3b IPO; Clay rais

This Week in Pre-IPO Stocks - E220: OpenAI tender eyes $500b valuation; OpenAI offers govt ChatGPT for $1; OpenAI releases open-weight models; OpenAI launches GPT-5 model; Bullish targets $4.23b IPO valuation; n8n raises at $2.3b pre-money; Figure Technology files $3.3b IPO; Clay rais