DeepSeek
DeepSeek V4.1 Flash 1017
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.
At a glance
- Input / 1M
- $0.15
- Output / 1M
- $0.60
- Context
- 1.05M
- Max output
- 393K
- Intelligence
- 39.5
- Released
- Oct 2026
Pricing
DeepSeek V4.1 Flash 1017 API pricing
Per-token rates, plus what common tasks actually cost.
| Input tokensPer 1M tokens | $0.15 |
|---|---|
| Output tokensPer 1M tokens | $0.60 |
| Cached input (read)Per 1M tokens | $0.00 |
| Cache writePer 1M tokens | Not available |
Chat message
2K in, 500 out
$0.60
per 1,000 requests
Coding task
30K in, 4K out
$6.90
per 1,000 requests
Long document summary
150K in, 2K out
$23.70
per 1,000 requests
Benchmarks
DeepSeek V4.1 Flash 1017 benchmark scores
Independent scores from Artificial Analysis. Higher is better.
Intelligence index
39.5
Coding index
Not available
Agentic index
Not available
Specs
Context window and capabilities
What it can read, what it can write, and which API features it supports.
- Context window
- 1.05M tokens
- Max output
- 393K tokens
- Input types
- Image, Text
- Output types
- Text
- Reasoning effort
- Max, High, Low, None
- Release date
- October 17, 2026
- Tool calling
- Structured outputs
- JSON mode
- Reasoning
- Temperature
- Stop sequences
- Deterministic seed
- Verbosity control
Compare
DeepSeek V4.1 Flash 1017 vs other models
See how DeepSeek V4.1 Flash 1017 stacks up head to head on price, benchmarks, and features.
VSDeepSeek V4.1 Flash 1017 vs Step 5 Preview
DeepSeek vs StepFun
See comparisonVS
DeepSeek V4.1 Flash 1017 vs Claude Haiku 5.5
DeepSeek vs Anthropic
See comparisonVSDeepSeek V4.1 Flash 1017 vs GLM 5.3 Flash
DeepSeek vs Z.ai
See comparisonVSDeepSeek V4.1 Flash 1017 vs Ling 3.1 Flash
DeepSeek vs inclusionAI
See comparisonVS
DeepSeek V4.1 Flash 1017 vs GPT-6 Luna
DeepSeek vs OpenAI
See comparisonVSDeepSeek V4.1 Flash 1017 vs MiMo-V2.6-Flash
DeepSeek vs Xiaomi
See comparisonAlternatives
DeepSeek V4.1 Flash 1017 alternatives
Similar models worth considering, and where each one has the edge.
StepFun
Step 5 Preview
Anthropic
Claude Haiku 5.5
Z.ai
GLM 5.3 Flash
Want to learn about other models? Browse all models
FAQ
Frequently asked questions
How much does DeepSeek V4.1 Flash 1017 cost?
DeepSeek V4.1 Flash 1017 costs $0.15 per 1M input tokens and $0.60 per 1M output tokens through the API. A typical chat message costs about $0.60 per 1,000 messages.
What is the context window of DeepSeek V4.1 Flash 1017?
DeepSeek V4.1 Flash 1017 accepts up to 1.05M tokens of input and can write up to 393K tokens in a single response.
What is the best alternative to DeepSeek V4.1 Flash 1017?
Step 5 Preview from StepFun is a strong alternative. It offers: higher intelligence score, accepts video.
Can I use DeepSeek V4.1 Flash 1017 alongside other models?
Yes. Shortcut Chat sends one prompt to DeepSeek V4.1 Flash 1017 and any other models you pick at the same time, so you can compare answers side by side.
Try DeepSeek V4.1 Flash 1017 next to every other model.
Use DeepSeek V4.1 Flash 1017 alongside all the other models. Use one at a time, or multiple together. Get the best answer from every AI.