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docs(cheatsheet): update ultrathink note — re-introduced in v2.1.68

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ultrathink now forces high effort for next turn (no longer cosmetic).
Opus 4.6 defaults to medium effort since v2.1.68.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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Florian BRUNIAUX 2026-03-05 18:16:50 +01:00
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guide/cheatsheet.md
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@ -225,7 +225,7 @@ Model: Sonnet | Ctx: 89.5k | Cost: $2.11 | Ctx(u): 56.0%
| **Plan Mode** | `Shift+Tab × 2` or `/plan` | Explore without modifying |
| **OpusPlan** | `/model opusplan` | Opus for planning, Sonnet for execution |
> **Opus 4.6**: Thinking is **ON by default at max budget**. Keywords like "think hard" or "ultrathink" are cosmetic only — they don't control depth.
> **Opus 4.6** (v2.1.68+): Default effort = **medium** for Max/Team. Use `ultrathink` to force high effort for the next turn. "think hard" remains cosmetic.
| Control | Action | Persistence |
|---------|--------|-------------|