【注意】Claude ProでOpusを使うには「追加利用」の設定が必須に

Claude Proを利用中の方へ。Opusモデルを利用するには、設定から「追加利用（extra usage）」を有効にしておく必要があります。ここをオンにしておかないと、せっかくの高性能モデルが使えない状態になるので要注意です！

Basically the title.

Anthropic is doing changes on their help support pages on what looks like it will be the next pricing change regarding how users will use Opus models on Pro Plan.

It's just matter of time that price become so high that Enterprise cannot afford these tools unless they self-host open models. Only problem is open models are coming from China and not many countries trust that to use inside companies. How will it play?

Opus was consuming so much usage that it was basically unusable on anything but the Max plan.

Turns out when the bills start rolling in you need the revenue to pay them. Here comes the bumpy ride

this is an outdated support article from before we had Opus in Pro plans, we rolled it out for Opus 4.5 in Jan and never updated, you can see in the wayback machine here: https://web.archive.org/web/20251204151142/https://support.c... (https://web.archive.org/web/20251204151142/https://support.claude.com/en/articles/11940350-claude-code-model-configuration)

apologies for the confusion

response from @thariq

Investor funds have been subsidizing the inference costs so far.

Investors might move from funding the model providers to funding the enterprises that use those models. That is, they might move from funding the cost of the experiment to funding the value of the result. No funding if there are no demonstrable AI gains.

This is a reasonable shift if this happens. If enough gains have been demonstrated, then investors might go back to funding the model providers. Investors always move towards the highest leverage point.

As long as AI delivers, this would be the rhythm.