Claude Haiku 5.5 prompt guide
API and integration
5 source-checked resourcesClaude Haiku 5.5 Migration Configuration: Switching from Haiku 4.5 to the New API Parameters and Tool Set
When migrating from Claude Haiku 4.5 to Claude Haiku 5.5, replacing the model ID is only part of the work: you must also update adaptive thinking, sampling parameters, assistant prefill, computer tools, thinking-block account binding, and append-only conversat.
Claude Haiku 5.5 Official Prompting Guide: Effort, Search, and Agent Reliability
Anthropic recommends starting by using effort to control Haiku 5.5's thinking depth, then adding a search date, JSON tool-call guidance, long-agent safeguards, code verification, message-injection isolation, and refusal handling based on observed behavior; exi.
Claude Haiku 5.5 Customer Support Ticket Routing Prompt
Anthropic provides a Claude Haiku 5.5 low-effort customer-support ticket classification prompt with few-shot examples and XML tag constraints. It assigns each ticket a single intent and extracts the reasoning and intent separately for downstream routing.
Reddit Configuration Report: Switching Search Subagents to Haiku 5.5 in Claude Code
This Reddit post shows how to point a custom Claude Code subagent, or all subagents, to Haiku 5.5. The author later found that forcing the setting globally harmed implementation tasks that needed Opus, so Haiku is better reserved for search, reading, and mecha.
Claude Haiku 5.5 Official Model Overview: Model IDs, Capacity, Pricing, and Effort Configuration Baseline
The official model overview provides the current Claude Haiku 5.5 model IDs for each platform, a 1M-token context window, a 128K maximum output, input-length pricing tiers, and a default medium effort baseline for API calls.
Claude Haiku 5.5
Use in Tabbit
Curated prompt patterns, model settings, and practical examples for Claude Haiku 5.5, with the original source attached to every entry.