Their valuations differ by about 13%. That's close enough that I wouldn't call it "blown past".
Things change fast in this space. Anthropic had a big boost from having the premier coding model for a while, but GPT-5.5 has closed that gap at a time when a lot of Anthropic customers are looking for cheaper alternatives.
Anthropic is coming off of a recent change to their enterprise billing that substantially changed the pricing for many users. They were smart to do the fundraising before the effects of that change could fully propagate.
> but GPT-5.5 has closed that gap at a time when a lot of Anthropic customers are looking for cheaper alternatives.
GPT-5.5 is a bit more expensive than Opus ? Current list prices
| Model | Input | Output |
| GPT-5.5 | $5/MTok | $30/MTok |
| Opus 4.8/7 | $5/MTok | $25/MTok |
Deepseek perhaps would be the top threat on a pure price/performance metric for either of them. It doesn't look like OAI is going for the value play .
The acceleration rate has been extraordinary… they went from mostly unknown outside AI circles to the number one player almost overnight. If that’s not “blown past” I don’t know what is.