> Your credit expires 90 days after the date you claim it.

I am guessing the vast majority of eligible credit will not be claimed or expire unspent.

Worth mentioning that normal credit expires after 12 months too, use it or lose it.

Sadly, no: you'll almost certainly burn it, faster than you think.

Anthropic recently (within the last few months) gave out what amounted to around $70 CAD im free credit. I rationed it slowly, spending maybe $5 in a month, using it a few dozen times to allow a Haiku-based task to finish past my usage window.

When Opus and Sonnet 4.6 released, I made the unfortunate mistake of "experimenting" with them on some work that couldn't be thrown away. I hit my timed usage cap, allowed Claude Code to consume 'extra usage' credits, and... nearly vaporized the entire credit balance within a couple tasks.

I understand that Opus and Sonnet are (considerably) more expensive than Haiku, but watching money burn by the dollar, in real-time, was enough for me to turn off extra usage entirely.

That free credits have some kind of short expiry date seems to be normal for me.

At least for european consumers the 12 month limit is probably illegal, as it is equivalent to cash and probably also needs to be refundable (similar to prepaid phone cards).