News · Claude
Claude Developers: A practical Opus 5.5 guide covers task handoffs and long-running work
Posted on X by Claude Developers (@ClaudeDevs) on 22 September 2026. The headline is our summary; the post itself is quoted below.
Claude Developers@ClaudeDevs ·
Try these in your first Opus 5.5 session: → Hand over a whole task. Define "done" and when to check in. → Drop "think carefully".…
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Context
- Claude Code 2.1.280Released the same day (UTC). Added Claude Opus 5.5 (claude-opus-5-5), now the default Opus model — 1M context, $4/$20 per Mtok with $0.20/Mtok cache reads · Added mouse support…
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