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 OpenAI: GPT-5.6 Luna
OpenAI: GPT-5.6 Luna wins on 3 of 6 axes — pricing and capability skew in its favour for most workloads.
GPT-5.6 Luna is a fast, cost-efficient model in OpenAI's GPT-5.6 series. It is suited for high-volume, latency-sensitive tasks such as chat, classification, and lightweight agentic workflows, providing capable reasoning for...
Model details →Side-by-side comparison
| Capability | DeepSeek: DeepSeek V4 Flash Vision Exp | OpenAI: GPT-5.6 Luna | Winner |
|---|---|---|---|
| Context window Maximum number of input tokens the model can attend to in a single request. | 1.0M | 1.1M | 🏆 OpenAI: GPT-5.6 Luna |
| Input price (per 1M) Cost per million input tokens billed by the provider. | $0.44 | $0.20 | 🏆 OpenAI: GPT-5.6 Luna |
| Output price (per 1M) Cost per million output tokens billed by the provider. | $1.32 | $1.20 | 🏆 OpenAI: GPT-5.6 Luna |
| 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 OpenAI: GPT-5.6 Luna?
OpenAI: GPT-5.6 Luna 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 OpenAI: GPT-5.6 Luna?
Input: $0.44 vs $0.20 per 1M tokens. Output: $1.32 vs $1.20 per 1M tokens.
What context windows do DeepSeek: DeepSeek V4 Flash Vision Exp and OpenAI: GPT-5.6 Luna support?
DeepSeek: DeepSeek V4 Flash Vision Exp supports up to 1.0M tokens. OpenAI: GPT-5.6 Luna supports up to 1.1M tokens.
Do both DeepSeek: DeepSeek V4 Flash Vision Exp and OpenAI: GPT-5.6 Luna support tool calling?
DeepSeek: DeepSeek V4 Flash Vision Exp: yes. OpenAI: GPT-5.6 Luna: yes.