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 NVIDIA: Nemotron 3 Ultra (free)
DeepSeek: DeepSeek V4.1 Flash and NVIDIA: Nemotron 3 Ultra (free) are evenly matched on 6 axes — pick the one whose provider, latency, or licensing fits your stack.
NVIDIA Nemotron 3 Ultra is an open frontier-reasoning and orchestration model from NVIDIA, with 55B active parameters out of 550B total (MoE). Built on a hybrid Transformer-Mamba mixture-of-experts architecture, it...
Model details →Side-by-side comparison
| Capability | DeepSeek: DeepSeek V4.1 Flash | NVIDIA: Nemotron 3 Ultra (free) | Winner |
|---|---|---|---|
| Context window Maximum number of input tokens the model can attend to in a single request. | 1.0M | 1M | 🏆 DeepSeek: DeepSeek V4.1 Flash |
| Input price (per 1M) Cost per million input tokens billed by the provider. | $0.15 | $0.00 | 🏆 NVIDIA: Nemotron 3 Ultra (free) |
| Output price (per 1M) Cost per million output tokens billed by the provider. | $0.60 | $0.00 | 🏆 NVIDIA: Nemotron 3 Ultra (free) |
| Tool / function calling First-class support for emitting structured tool calls. | Yes | Yes | Tie |
| Vision input Accepts image inputs alongside text. | Yes | — | 🏆 DeepSeek: DeepSeek V4.1 Flash |
| Reasoning mode Internal chain-of-thought / extended-thinking support. | Yes | Yes | Tie |
Frequently asked questions
Is DeepSeek: DeepSeek V4.1 Flash better than NVIDIA: Nemotron 3 Ultra (free)?
DeepSeek: DeepSeek V4.1 Flash and NVIDIA: Nemotron 3 Ultra (free) are evenly matched on 6 axes — pick the one whose provider, latency, or licensing fits your stack.
What's the price difference between DeepSeek: DeepSeek V4.1 Flash and NVIDIA: Nemotron 3 Ultra (free)?
Input: $0.15 vs $0.00 per 1M tokens. Output: $0.60 vs $0.00 per 1M tokens.
What context windows do DeepSeek: DeepSeek V4.1 Flash and NVIDIA: Nemotron 3 Ultra (free) support?
DeepSeek: DeepSeek V4.1 Flash supports up to 1.0M tokens. NVIDIA: Nemotron 3 Ultra (free) supports up to 1M tokens.
Do both DeepSeek: DeepSeek V4.1 Flash and NVIDIA: Nemotron 3 Ultra (free) support tool calling?
DeepSeek: DeepSeek V4.1 Flash: yes. NVIDIA: Nemotron 3 Ultra (free): yes.