DeepSeek V4 Flash Moves to Discounted Paid Tier; GLM 5.3 Flash Confirmed as Ox Alpha and Stays Free

B.AI ·

Key Info

B.AI is ending the free trial for DeepSeek V4 Flash and DeepSeek V4 Flash Vision Exp on September 3, 2026 (17:00 SGT), replacing it with discounted billing. The platform also reveals that the previously viral model Ox Alpha is GLM 5.3 Flash, which remains free alongside several other Flash models.

Highlights

  • Until September 3, 17:00 SGT, DeepSeek V4 Flash and V4 Flash Vision Exp remain free; after that they are billed at a 50% discount.
  • B.AI follows DeepSeek's official peak/off-peak pricing with additional discounts: peak hours (weekdays 09:00–12:00 and 14:00–18:00 SGT) cost 50% of the official price; off-peak hours cost another 50% off the peak price, i.e., 25% of the official price.
  • GLM 5.3 Flash (the model behind Ox Alpha) is a native multimodal model with 320B total / 18B active parameters and 1M context, positioned as a strong free option for high-frequency calls.
  • Qwen3.8 Flash, Hy3, and MiMo V2.5 will also continue to be free.
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