Claude Token Counter Now Lets You Compare Models Before You Pay a Cent If you’ve ever run a batch job through Claude and opened your Anthropic invoice with mild dread, you know the feeling: context is expensive, and it’s hard to predict exactly how expensive until the bill arrives. Claude’s token counting API has been around for a while, but a recent update added something genuinely useful for developers building production systems: cross-model comparison in a single call. You can now see exactly how many tokens a given prompt costs against Haiku, Sonnet, and Opus before committing to any of them. No inference. No charge. Just the count. ...