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Flue 1.0 Beta, announced by Fred K.

Brief

Flue 1.0 Beta, announced by Fred K. Schott on June 16, 2026, is a TypeScript agent framework emphasizing zero LLM lock-in and three primitives (Workflows, Agents, Channels). Built on Pi, Vite, and Durable Streams it offers durable state, cross-service Channels (Slack/GitHub/Linear/Discord/Teams), deploy-anywhere recovery, and drew excitement from @ankrgyl for a native Braintrust integration and agent-tracing advances.

Source evidence

Very excited about Flue and the new native integration with Braintrust. Agent tracing is quite a bit different than traditional LLM apps and evolving quickly.

fks (@FredKSchott)

Just Shipped: Flue 1.0 Beta

Flue is the TypeScript framework for building the next generation of agents, designed around an open agent harness with zero LLM lock-in. It’s like Astro, for agents.

Flue 1.0 has been redesigned around three core primitives:

🔁 Workflows — structured automations designed for background work, where your code drives the agent from start to finish.

🧭 Agents (New!) — autonomous, stateful loops where the model drives itself to complete a given task.

📡 Channels (New!) — connect agents to Slack, GitHub, Linear, Discord, Teams, and more. Flue handles the boilerplate for you.

Everything shares the same durable foundation, powered internally by Pi, Vite, and Durable Streams. Deploy anywhere, use any LLM, and recover running agents across restarts and downtime.

We’ve talked to a lot of teams building agents, and keep hearing the same thing: getting to production is hard work. We built Flue to help change that.

Flue 1.0 Beta is available today. Give it a try and let me know what you think!

Video

— https://nitter.net/FredKSchott/status/2066962296119959581#m