Speed up responses with fast mode changedfast-mode
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Upstream edited this page at 29 Sep 2026 21:13 UTC, give or take a minute or two: the time comes from Anthropic’s own sitemap rather than from a commit. This site recorded the change at 29 Sep 2026 21:37 UTC.
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6363Type `/fast on` in the session to turn fast mode on. It stays on for that session only and isn't saved as your default. The [requirements](#requirements) apply in cloud sessions too.
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65In the browser at [claude.ai/code](https://claude.ai/code), you can also turn fast mode on and off from the model menu on the message box. The menu shows the switch when your plan includes fast mode and the selected model supports it.
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6567## Understand the cost tradeoff
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6769Fast mode has higher per-token pricing than standard Opus:
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