DeepSeek V4 Flash Vision Exp is an experimental vision-enabled version of [DeepSeek V4 Flash 0731](https://openrouter.ai/deepseek/deepseek-v4-flash-0731) from DeepSeek, adding image understanding while matching the base model on text capabi…
Model details →DeepSeek: DeepSeek V4 Flash Vision Exp vs xAI: Grok 4.1 Fast
xAI: Grok 4.1 Fast wins on 3 of 6 axes — pricing and capability skew in its favour for most workloads.
Grok 4.1 Fast is xAI's best agentic tool calling model that shines in real-world use cases like customer support and deep research. 2M context window. Reasoning can be enabled/disabled using the `reasoning` `enabled` parameter in the API. …
Model details →Side-by-side comparison
| Capability | DeepSeek: DeepSeek V4 Flash Vision Exp | xAI: Grok 4.1 Fast | Winner |
|---|---|---|---|
| Context window Maximum number of input tokens the model can attend to in a single request. | 1.0M | 2M | 🏆 xAI: Grok 4.1 Fast |
| Input price (per 1M) Cost per million input tokens billed by the provider. | $0.22 | $0.20 | 🏆 xAI: Grok 4.1 Fast |
| Output price (per 1M) Cost per million output tokens billed by the provider. | $0.66 | $0.50 | 🏆 xAI: Grok 4.1 Fast |
| 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 Flash Vision Exp better than xAI: Grok 4.1 Fast?
xAI: Grok 4.1 Fast wins on 3 of 6 axes — pricing and capability skew in its favour for most workloads.
What's the price difference between DeepSeek: DeepSeek V4 Flash Vision Exp and xAI: Grok 4.1 Fast?
Input: $0.22 vs $0.20 per 1M tokens. Output: $0.66 vs $0.50 per 1M tokens.
What context windows do DeepSeek: DeepSeek V4 Flash Vision Exp and xAI: Grok 4.1 Fast support?
DeepSeek: DeepSeek V4 Flash Vision Exp supports up to 1.0M tokens. xAI: Grok 4.1 Fast supports up to 2M tokens.
Do both DeepSeek: DeepSeek V4 Flash Vision Exp and xAI: Grok 4.1 Fast support tool calling?
DeepSeek: DeepSeek V4 Flash Vision Exp: yes. xAI: Grok 4.1 Fast: yes.