DeepSeek V4.1 Flash 1017 API
DeepSeek V4.1 Flash 1017 is the dated 1017 build of V4.1 Flash. DeepSeek's release notes describe a 552B-parameter MoE with 8B input / 16B output activation, native multimodal input, smaller KV cache and released open weights. Use the dated ID when you need to pin this build.
Official source: model page · verified 2026-10-22
Pricing
Prices can change with upstream providers; the rate at settlement is authoritative.
Call the API
Use the OpenAI-compatible endpoint; no model-specific SDK setup is required.
curl https://api.kimiseek.app/v1/chat/completions \
-H "Authorization: Bearer $KIMISEEK_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "deepseek-v4.1-flash-1017",
"messages": [{"role": "user", "content": "Hello from KimiSeek"}]
}'Where it fits
Best for
- Reproducible V4.1 Flash deployments
- Cost-sensitive agent and coding workloads
- Teams that need a pinned current DeepSeek build
Tradeoffs
- A dated snapshot will not automatically receive later improvements
- The rolling deepseek-v4.1-flash entry is the general alias; compare both before pinning
Model details
FAQ
What is the difference from deepseek-v4.1-flash?
This is the 1017 dated build. The rolling alias points at the current V4.1 Flash configuration; use this ID when reproducibility matters.
Is this model open source?
DeepSeek publishes weight links for V4.1 Flash 1017. Review the current Hugging Face or ModelScope licence before self-hosting.
How do I call this model?
Use KimiSeek's OpenAI-compatible API and set the model field to deepseek-v4.1-flash-1017 with your KimiSeek API key.