DeepSeek V4.1 Flash is a sparse mixture-of-experts model from DeepSeek, and the first built on the company's Causal Encoder-Decoder (CED) architecture. It activates 8B parameters on input and 16B on...
Model details →DeepSeek: DeepSeek V4.1 Flash vs Z.ai: GLM 5.3 FlashX
DeepSeek: DeepSeek V4.1 Flash wins on 2 of 6 axes — pricing and capability skew in its favour for most workloads.
GLM-5.3-FlashX is the high-speed variant of Z.ai's GLM-5.3-Flash, a native multimodal model delivering inference speeds of up to 200 tokens/s. Built on the same hybrid sparse and linear attention architecture...
Model details →Side-by-side comparison
| Capability | DeepSeek: DeepSeek V4.1 Flash | Z.ai: GLM 5.3 FlashX | Winner |
|---|---|---|---|
| Context window Maximum number of input tokens the model can attend to in a single request. | 1.0M | 1.0M | Tie |
| Input price (per 1M) Cost per million input tokens billed by the provider. | $0.15 | $0.37 | 🏆 DeepSeek: DeepSeek V4.1 Flash |
| Output price (per 1M) Cost per million output tokens billed by the provider. | $0.60 | $1.25 | 🏆 DeepSeek: DeepSeek V4.1 Flash |
| Tool / function calling First-class support for emitting structured tool calls. | Yes | Yes | Tie |
| Vision input Accepts image inputs alongside text. | Yes | Yes | Tie |
| Reasoning mode Internal chain-of-thought / extended-thinking support. | Yes | Yes | Tie |
Frequently asked questions
Is DeepSeek: DeepSeek V4.1 Flash better than Z.ai: GLM 5.3 FlashX?
DeepSeek: DeepSeek V4.1 Flash wins on 2 of 6 axes — pricing and capability skew in its favour for most workloads.
What's the price difference between DeepSeek: DeepSeek V4.1 Flash and Z.ai: GLM 5.3 FlashX?
Input: $0.15 vs $0.37 per 1M tokens. Output: $0.60 vs $1.25 per 1M tokens.
What context windows do DeepSeek: DeepSeek V4.1 Flash and Z.ai: GLM 5.3 FlashX support?
DeepSeek: DeepSeek V4.1 Flash supports up to 1.0M tokens. Z.ai: GLM 5.3 FlashX supports up to 1.0M tokens.
Do both DeepSeek: DeepSeek V4.1 Flash and Z.ai: GLM 5.3 FlashX support tool calling?
DeepSeek: DeepSeek V4.1 Flash: yes. Z.ai: GLM 5.3 FlashX: yes.