{"version":"2.1.321","anchor":"fast-mode-switch-behaviour-and-minimum-version-warning","canonical_anchor":"fast-mode-switch-behaviour-and-minimum-version-warning","heading":"Turning on fast mode does one more step, and a minimum-version warning can appear","tier":"notice","area":"Models","scope":"individual","heads_up":false,"url":"https:\/\/changelogs.core-directive.com\/v\/2.1.321\/e\/fast-mode-switch-behaviour-and-minimum-version-warning","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.321","markdown":"### Turning on fast mode does one more step, and a minimum-version warning can appear\n\nTurning on fast mode now runs an extra step, and a new minimum-version notice can show a warning\n\n**Unclear.** What the extra step does when fast mode is turned on, and what triggers the minimum-version warning, are not clear.\n\n**What**\n\nFast mode makes Claude reply faster. Turning it on now runs one more step than before. The instructions given to Claude now say that fast mode switches the session to Opus only if the current model does not support fast mode.\n\nA notice called `minimum-version` can now show a warning sentence when a certain condition is met.\n\n**Why**\n\nThese affect which model your session uses after turning on fast mode, and add a warning you may see.\n\n- Area: Models\n- Tier: You'll notice\n- Useful: 2\/5\n- Signal: 2\/5\n- Scope: individual\n- Heads-up: no"}