DeepSeek: DeepSeek V4.1 Flash 1017✓ Catalog verified
DeepSeek V4.1 Flash 1017 is the October 17, 2026 snapshot of DeepSeek V4.1 Flash, served by DeepSeek under the `deepseek-flash` API model name. V4.1 Flash is a sparse mixture-of-experts model...
Overview
DeepSeek V4.1 Flash 1017 is the October 17, 2026 snapshot of DeepSeek V4.1 Flash, served by DeepSeek under the `deepseek-flash` API model name. V4.1 Flash is a sparse mixture-of-experts model...
Access: available through the official DeepSeek API. Context window: 1.0M.
Specifications
| API identifier | deepseek/deepseek-v4.1-flash-1017 |
| Provider | DeepSeek |
| Model type | Multimodal LLM |
| Context window | 1.0M catalog |
| Input modalities | text · image |
| Output modalities | text |
| Released | Oct 17, 2026 |
| Tokenizer | DeepSeek |
| Moderated | No |
| Architecture modality | text+image->text |
Pricing
Live pricing components for deepseek/deepseek-v4.1-flash-1017 as published in the catalog.
| Pricing component | Raw unit price | Normalized | Unit |
|---|---|---|---|
| Prompt tokens | $1.5e-7 | $0.15 / 1M | Per input token |
| Completion tokens | $6e-7 | $0.60 / 1M | Per output token |
| Request fee | N/A | N/A | Per request |
| Image fee | N/A | N/A | Per image unit |
| Web search fee | N/A | N/A | Per search request |
Cost calculator
Estimate monthly spend from your own token volumes.
Estimated Total Cost
$0.2Calculated from current list pricing in the ModelsAtlas catalog.Capabilities
| Capability | Status | What it means |
|---|---|---|
| Visual Understanding | ✓ Supported | Image and document analysis support |
| Audio Processing | Not advertised | Speech and voice aligned flows |
| Tool Calling | ✓ Supported | Supports tools / function calling |
| Self-Hosting | ✓ Supported | Deploy outside managed APIs |
Capability signals
Directional signals derived from model metadata and capability tags — not official benchmark submissions.
Quick start
Call DeepSeek: DeepSeek V4.1 Flash 1017 through an OpenAI-compatible client.
from openai import OpenAI
client = OpenAI(
base_url="https://openrouter.ai/api/v1",
api_key="YOUR_API_KEY"
)
response = client.chat.completions.create(
model="deepseek/deepseek-v4.1-flash-1017",
messages=[{"role": "user", "content": "Explain quantum physics."}]
)
print(response.choices[0].message.content)Alternatives
Closest models by context window from a different provider.
| Model | Provider | Context | Input /1M | Actions |
|---|---|---|---|---|
| Fireworks: Ember-1 | Fireworks | 1.0M | $3.00 | View → |
| Google: Gemini 2.0 Flash | 1.0M | $0.10 | View → |
Sources & attribution
Pricing and metadata are maintained in the ModelsAtlas catalog.
Frequently asked questions
How much does DeepSeek: DeepSeek V4.1 Flash 1017 cost?
$0.15 per 1M input tokens and $0.60 per 1M output tokens on the official DeepSeek API.
What is the context window of DeepSeek: DeepSeek V4.1 Flash 1017?
DeepSeek: DeepSeek V4.1 Flash 1017 supports up to 1.0M tokens of context.
Does DeepSeek: DeepSeek V4.1 Flash 1017 support tool / function calling?
Yes, DeepSeek: DeepSeek V4.1 Flash 1017 supports tool / function calling — you can register tools and the model will emit structured tool calls.
How do I access DeepSeek: DeepSeek V4.1 Flash 1017?
Use the official DeepSeek API with the model id `deepseek/deepseek-v4.1-flash-1017`. See the Quick start section above for code examples.