As of June 29, 2026, fast mode is not available on Claude Opus 4.6
As of June 29, 2026, fast mode is not available on Claude Opus 4.6 — reported by platform.claude.com, aggregated and ranked by ClawDigest.
As of June 29, 2026, fast mode is not available on Claude Opus 4.6 — reported by platform.claude.com, aggregated and ranked by ClawDigest.