AI model daily brief: September 26, 2026 — DeepSeek V4.1 Flash gets cheaper

Developers should prioritize the significant pricing volatility in DeepSeek and GLM models alongside the high reliability observed across major Chinese providers. These shifts directly impact production cost forecasting and service stability, necessitating immediate updates to deployment configurations.

Reliability watch

• Cursor: 0 failed and 17 degraded checks out of 720
• Tencent Hunyuan: 0 failed and 6 degraded checks out of 720
• Kimi (Moonshot AI): 0 failed and 5 degraded checks out of 720
• Doubao (Volcengine Ark): 0 failed and 3 degraded checks out of 720
• Xiaomi MiMo: 0 failed and 3 degraded checks out of 720

Price changes

• GLM 5.3 (Z.ai (Zhipu)): $0.38 / $1.19 → $1.40 / $4.40 (+269%)
• DeepSeek V4.1 Flash (DeepSeek): $0.30 / $1.20 → $0.035 / $0.29 (-76%)
• Hy3 (Tencent): $0.13 / $0.53 → $0.0825 / $0.33 (-37%)
• DeepSeek V4 Pro 0423 (DeepSeek): $0.38 / $0.76 → $0.35 / $0.70 (-8%)
• DeepSeek V4 Pro 0423 (DeepSeek): $0.42 / $0.84 → $0.38 / $0.76 (-10%)
• GLM 5.3 (Z.ai (Zhipu)): $1.40 / $4.40 → $0.38 / $1.19 (-73%)
• DeepSeek V4.1 Flash (DeepSeek): $0.14 / $0.42 → $0.30 / $1.20 (+186%)
• DeepSeek V4 Flash 0731 (DeepSeek): $0.022 / $0.32 → $0.021 / $0.32 (0%)
• DeepSeek V4 Pro 0423 (DeepSeek): $0.43 / $0.86 → $0.42 / $0.84 (-2%)
• GLM 5.3 Flash (Z.ai (Zhipu)): $0.045 / $0.14 → $0.04 / $0.50 (+257%)
• DeepSeek V4 Pro 0423 (DeepSeek): $0.46 / $0.92 → $0.43 / $0.86 (-7%)
• Hy3 (Tencent): $0.0825 / $0.33 → $0.13 / $0.53 (+60%)
• Nemotron 3.5 Lightning (NVIDIA): $0.07 / $0.20 → $0.08 / $0.20 (0%)
• DeepSeek V4.1 Flash (DeepSeek): $0.15 / $0.60 → $0.14 / $0.42 (-30%)
• DeepSeek V4 Pro 0423 (DeepSeek): $0.50 / $1.00 → $0.46 / $0.92 (-8%)

Deprecations & removals

• Claude 3 Haiku was removed from the catalog

This brief is generated automatically from ModelBank's live monitoring data. Want these changes the moment they happen? Get free alerts.