Zed 1.21.0: Agent Panel BYOK for Claude Opus 5.5 and GPT-6 Astra/Sol/Luna; prevent idle sleep on long agent turns
Zed Industries shipped editor Zed v1.21.0 on 2026-09-23. AI: Agent Panel BYOK for Claude Opus 5.5 (Anthropic) and GPT-6 Astra/Sol/Luna (OpenAI); SuperGrok sign-in for Grok models; DeepSeek Flash 4.1; Z.ai GLM via Mistral provider; agent.prevent_idle_sleep on by default so long agent turns do not idle-sleep the machine. Also: language-server command picker, showDocument open file/URL, faster syntax/Markdown code-block rendering, ACP compatibility and async task wakeup improvements.
Key Takeaways
- Shipped: v1.21.0 — zed.dev/releases/stable
- BYOK: Opus 5.5 (Anthropic) + GPT-6 Astra/Sol/Luna (OpenAI)
- Default agent.prevent_idle_sleep for long agent turns
- Also: SuperGrok, DeepSeek Flash 4.1, Z.ai GLM via Mistral; ACP improvements
- Docs: AI overview, Agent Panel, LLM providers
Linked Models & Agents: