Developers say that the subscription limit for Fable 5.2 is about one-fifth of Opus

Renowned developer and T3 Code founder Theo discovered that although Anthropic's newly released Fable 5.2 is more powerful, the API equivalent usage available to subscription users is significantly lower. Theo has been tracking the actual request data of Claude Code for a long time. According to his estimates, for the same monthly subscription fee of $200 for Claude Ultra, using Opus 5.5 would yield an API usage equivalent to about $15,000 per month; switching to Fable 5.2 would only provide about $3,000, a difference of nearly 5 times.

Anthropic stipulates that Ultra users can use a maximum of 50% of their total quota for Fable each week. Even if the entire quota is not used, as long as Fable reaches its limit, users must switch to other models or pay extra to continue using it. Theo estimates that if Opus 5.5 is used fully in a week, approximately 1,200 interaction rounds and 230 task sessions can be completed. If the Fable quota is exhausted first and then switched to Opus, the total number of interaction rounds would drop to about 900, although the number of completed task sessions might be slightly higher since Fable can sometimes complete tasks in one go without repeated communication.

The API unit price of Fable 5.2 has decreased by 20% compared to the previous generation, with input and output tokens costing $8 and $40 per million, respectively, but it is still twice that of Opus 5.5. Anthropic reminds users that Fable will consume subscription quotas faster than other Claude models. Currently, Anthropic is offering eligible subscription users 1 to 3 opportunities to reset their Fable quota, with the number of resets depending on the subscription duration. Each reset can return the Fable quota consumed in the current week, allowing users to continue using it without waiting until the next week.