Skip to main content
Broadcast mode lets you fan one prompt out to multiple providers simultaneously. The answers stream in parallel columns. When you have seen enough, you pick a winner or star the better turn — then keep going.

​
Starting a broadcast

  1. Open the Chat tab.
  2. Toggle the mode selector from Solo to Broadcast.
  3. Pick 2–3 providers from the provider picker. Providers that are not configured or currently unavailable are greyed out — the picker reads live availability from /chat-providers.
  4. Write your prompt and send.
A broadcast requires at least 2 successful spawns. If only one provider starts cleanly, the response surfaces the failed slots’ reasons and the session does not open as a broadcast.

​
While streaming

Each column streams its own reply with its own token count and cost. The columns are horizontally scrollable on iPhone; on Mac they sit side by side. Deep Research can be enabled per-slot at creation time. It propagates to each child session independently (Codex sandbox flag, Claude system prompt).

​
Picking a winner

Two actions determine what happens after you have compared the answers:
Tap the star on a turn in any column. This records a turnWinner entry on the frontier group — pure metadata. The broadcast stays open; all providers keep responding to follow-up prompts. Use this to track which provider is winning turn by turn without committing to one.

​
Attachments in broadcast

When you attach a file, the composer uploads it once per child via separate staging paths: <worktree>/.clawdmeter-attachments/<sessionId>/. Each agent sees its own path in the prompt. You do not need to upload separately per provider.

​
Continuing from a winner

After Pick winner, the winning session is a normal Solo chat. Its history is the full transcript from the broadcast phase onward. Open it from the Chat sidebar and keep going.
If you find yourself always picking the same provider, set it as your default in Settings → Providers and use Solo mode instead. Broadcast is most useful when you genuinely expect the answers to differ.
  • Chat — the Chat tab, Solo mode, and history sidebar.
  • Composer — attachments, slash commands, and the send flow.