Models
DeepSeek V4.1-Flash-1017
DeepSeek
Flash model update (Oct 17, 2026) with MIT-licensed open weights: 77.0% on DeepSWE v1.1 (source: DeepSeek, Hugging Face).
- Pricing
- Weights and repository under the MIT License (source: https://huggingface.co/deepseek-ai/DeepSeek-V4.1-Flash-1017). Paid DeepSeek API (deepseek-flash model): $0.30 input (cache miss) and $1.20 output per million tokens at peak hours, half price off-peak (source: https://api-docs.deepseek.com/quick_start/pricing).
- License
- MIT
- Updated on
- Platforms
- Local, API
- Open source
- Yes
- Context window
- 1 million tokens
- Reference model
- DeepSeek V4.1-Flash-1017
- API price (per million tokens)
- input $0.3 · output $1.2 · Source
- Coding score
- 77% DeepSWE v1.1 · Source
- Open weights
- Yes
- Release date
Alternatives
- Claude · Claude vs DeepSeek V4.1-Flash-1017
- GPT · DeepSeek V4.1-Flash-1017 vs GPT
- Open-source models · DeepSeek V4.1-Flash-1017 vs Open-source models
- Muse Spark Open · DeepSeek V4.1-Flash-1017 vs Muse Spark Open
All DeepSeek V4.1-Flash-1017 alternatives (6) →
Related articles and comparisons
- MiniMax and DeepSeek: Flash models slash the price of agentic coding
- Scope, DeepInfer, Humming: tooling for agents and inference goes open source
- DeepSeek is reportedly helping Huawei design its next AI chips: what is sourced and what is not
- DeepSeek V4.1 Flash, MiniMax M3.1 Flash, Gemini 4 Argon