Subagents are here + Code w/ Claude

Alter now spin up subagents to help you do more complex tasks in a more efficient way

AuthorAuthor

Samuel ROY & Olivier Legris
May 22, 2026

Hey everyone,

We are excited to announce Tasks, our new dynamic subagent system, and the launch of the OpenCollider framework.

Tasks: Multi-step Workflows

Tasks are dynamic, focused sub-agents you can spin up for specific jobs.

Whenever a task becomes too complex for a single agent, Alter will now start subagents and delegates tasks.

Subagents are designed to delegate independent parts of a request whenever you require to investigate, compare, extract, summarize, check, execute code, manipulate files, or complete any self-contained work with clear context.

Test Tasks now

❝

Create two subagents to search for the latest information about the French squad and the English squad at the 2026 World Cup.

OpenCollider: Brainstorming Reimagined

To demonstrate the power of Tasks, we’ve built an Action based on the OpenCollider framework, created by Cédric Lion.

OpenCollider is designed to generate ideas that are rich and original, avoiding the "flat" feel of standard AI output. It follows a rigorous process:

  1. Builds a brief

  2. Explores domains

  3. Generates collision ideas

  4. Judges and corrects them

  5. Iterates based on your feedback

This structure turns AI interaction into a genuine brainstorming session where you choose the strongest ideas to develop further.

Alter at the Code w/ Claude conference

Olivier, Alter co‑founder, and Anthropic Ambassador was presenting at this week's Code w/ Claude conference about Alter’s origin story and building a local video intelligence pipeline.

See you next week,

Olivier & Samuel

Full Changelog

New Features & Enhancements

  • Tasks and subagents: Added the Task subagent tool.

  • OpenCollider and marketplace: Added action publishing from the action editor and support for the new OpenCollider framework.

  • Calendar context and transcripts: Added Calendar Event metadata to Transcript files, Calendar Event contexts, and calendar event details for transcript context.

  • QuickHub and hub workflows: Added source-aware QuickHub activation, shortcut handling while typing, a delete conversation confirmation dialog, and reliable focus restoration after context removal.

  • Workspace sharing and attachments: Added share-file workspace tooling, and allowed image workspace attachments automatically.

  • Doctor: Added a Doctor diagnostics settings screen, better tool arguments error recovery.

  • Active tools: Added an active-tools link to the app detail view.

Bug Fixes & Stability

  • Context handling: Prevented directory context explosion, preserved context-only user messages.

  • Transcripts and meetings: Prevented duplicate speaker crashes, guarded generated transcript titles, refined meeting calendar matching, improved microphone startup error messages, and prevented meeting transcription cleanup hangs.

  • Hub and QuickHub stability: Restored input focus after context removal and improved QuickHub activation with source-aware context.

  • Tool argument decoding: Fixed tool argument parsing and bundled skill dependency resolution.

  • Model display: Shortened lighter model names.

  • Apple ASR: Improved Apple ASR error handling.

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