<h2>What's changed</h2> <ul> <li>Added Claude Haiku 5.5 (<code>claude-haiku-5-5</code>), now the default Haiku model on the Anthropic API — 1M context, $0.10/$0.50 per Mtok ($0.50/$2.50 for prompts over 100K)</li> <li>Added <code>agentType</code> to the <code>subagentStatusLine</code> payload, so scripts can tell custom subagent types apart</li> <li>Added <code>isDeferred</code> to <code>$.tool.register</code> for mods: <code>false</code> lists the tool's schema in the prompt from the start instead of behind tool search</li> <li>Fixed Claude sometimes treating its own last actions before a con