AsOf

Claude Opus 5.5 · featureFast mode

valid: Two independent sources agree, or a primary source states it: the record asserts this claim.asserted

What the statuses mean

Valid from
2026-09-22
Valid until
still holds
Published
2026-09-22
Recorded by AsOf
2026-11-07
Checked
2026-11-08 · its source page states the value and the date
Confidence
0.70

Sources

“Fast mode (research preview) is available for Claude Opus 5.5 on the Claude API.”— what the page says, read 2026-11-08

Cite this claim

Each form names the value, its as-of date (2026-09-22), the day you read it (2026-11-08), 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 The URL never changes: a superseded claim stays at the same address.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. "Claude Opus 5.5 feature added: Fast mode", as of 2026-09-22. Claim clm_FC20FD2A53E2, https://asof.is/claim/clm_FC20FD2A53E2, accessed 2026-11-08. Source: https://platform.claude.com/docs/en/release-notes/overview#2026-10-15.
APA
AsOf. (2026). Claude Opus 5.5 feature added: Fast mode (as of 2026-09-22) [Record clm_FC20FD2A53E2]. Retrieved November 8, 2026, from https://asof.is/claim/clm_FC20FD2A53E2 (source: https://platform.claude.com/docs/en/release-notes/overview#2026-10-15)
BibTeX
@misc{asof_clm_FC20FD2A53E2,
  author = {AsOf},
  title = {Claude Opus 5.5 feature added: Fast mode},
  year = {2026},
  howpublished = {\url{https://asof.is/claim/clm_FC20FD2A53E2}},
  note = {Claim clm\_FC20FD2A53E2, as of 2026-09-22; source: https://platform.claude.com/docs/en/release-notes/overview\#2026-10-15},
  urldate = {2026-11-08}
}

On the record

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