ByteDance Opens Doubao Work to Third-Party Models: Kimi K3.1 Pro, GLM 5.3 and DeepSeek V4.1 Flash Join, With Per-Model Credit Multipliers and a Limited-Time 0.01x Rate for Doubao 2.1 Lite and DeepSeek V4.1 Flash
Doubao Work, ByteDance's AI agent product for office work, announced an update on November 12: alongside its in-house Doubao 2.1 Lite and Doubao 2.1 Pro, it now offers third-party models including Kimi K3.1 Pro, GLM 5.3 and DeepSeek V4.1 Flash, and users can switch per task. The model picker shows a credit multiplier for each model, where lower means cheaper: Doubao 2.1 Pro is 0.65x, GLM 5.3 0.80x and Kimi K3.1 Pro 0.95x, while Doubao 2.1 Lite and DeepSeek V4.1 Flash are cut to 0.01x for a limited time. Simple small tasks stay free, and time-of-day discounts are coming. On October 29 the feature had been opened only to team and enterprise subscriptions.

- •First third-party models: Kimi K3.1 Pro, GLM 5.3 and DeepSeek V4.1 Flash; the picker also lists Kimi K3, GLM 5.3 Flash and DeepSeek V4 Pro
- •Credit multipliers (per the UI screenshot): Doubao 2.1 Pro 0.65x, GLM 5.3 0.80x, Kimi K3.1 Pro 0.95x, Kimi K3.1 Pro high-speed 1.44x, Kimi K3 1.48x
- •Cheaper tiers: GLM 5.3 Flash 0.08x, DeepSeek V4 Pro 0.46x, and Doubao 2.1 Lite and DeepSeek V4.1 Flash at a limited-time 0.01x
- •Simple small tasks stay free in Auto mode; designated weekday and holiday time slots bring extra credit discounts on participating models
- •Opened to team and enterprise subscriptions on October 29 and to a wider user base on November 12; new desktop users get a 30-day membership










