AsOf

Anthropic · featureToken counting API

valid: Two independent sources agree, or a primary source states it: the record asserts this claim, unless it is a post, is marked for review or carries a confidence below 0.5.asserted

What the statuses mean

Valid from
2024-12-17
Valid until
still holds
Published
2024-12-17
Recorded by AsOf
2026-11-14
Checked
2026-11-15 · its source page states the value and the date, as read by an AI model
Confidence
0.70

Sources

“Token counting API : Calculate token counts for Messages before sending them to Claude.”— what the page says, read 2026-11-15

Cite this claim

Each form names the value, its as-of date (2024-12-17), the day you read it (2026-11-15), the claim's stable URL and id and its primary source. The URL never changes: a superseded claim stays at the same address.

Plain text
AsOf. "Anthropic feature added: Token counting API", as of 2024-12-17. Claim clm_4CEF893703A4, https://asof.is/claim/clm_4CEF893703A4, accessed 2026-11-15. Source: https://platform.claude.com/docs/en/release-notes/overview#2024-12-17.
APA
AsOf. (2024). Anthropic feature added: Token counting API (as of 2024-12-17) [Record clm_4CEF893703A4]. Retrieved November 15, 2026, from https://asof.is/claim/clm_4CEF893703A4 (source: https://platform.claude.com/docs/en/release-notes/overview#2024-12-17)
BibTeX
@misc{asof_clm_4CEF893703A4,
  author = {AsOf},
  title = {Anthropic feature added: Token counting API},
  year = {2024},
  howpublished = {\url{https://asof.is/claim/clm_4CEF893703A4}},
  note = {Claim clm\_4CEF893703A4, as of 2024-12-17; source: https://platform.claude.com/docs/en/release-notes/overview\#2024-12-17},
  urldate = {2026-11-15}
}

On the record

/claim/clm_4CEF893703A4.md/v1/claims/clm_4CEF893703A4submit a correction